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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 19, 2026 UNITED AIRLINES HOLD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 19, 2026 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission (IRS Employer

Statement from United Airlines CEO Scott Kirby

Exhibit 99.1 Statement from United Airlines CEO Scott Kirby CHICAGO (April 27, 2026) – Over the last two weeks, there’s been a lot of commentary about a potential merger between United Airlines and American Airlines. And to be direct, here’s what happened: I approached American about exploring a combination because I thought we could do something incredible for customers together. I always knew th

Statement from United Airlines CEO Scott Kirby

Exhibit 99.1 Statement from United Airlines CEO Scott Kirby CHICAGO (April 27, 2026) – Over the last two weeks, there’s been a lot of commentary about a potential merger between United Airlines and American Airlines. And to be direct, here’s what happened: I approached American about exploring a combination because I thought we could do something incredible for customers together. I always knew th

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 27, 2026 UNITED AIRLINES HO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 27, 2026 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 27, 2026 UNITED AIRLINES HO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 27, 2026 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724

BOEING/UNITED AIRLINES, INC. PROPRIETARY

Exhibit 10.5 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. The Boeing Company P.O. Box 3707 Seattle, WA 98124-2207 UAL-MISC-2601694 United Airlines, Inc. 233 South Wacker Drive Chicago, Illinois 60606 Subject: *** Matters R

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Registrant as Spe

PERFORMANCE-BASED RSU AWARD NOTICE

Exhibit 10.3 PERFORMANCE-BASED RSU AWARD NOTICE [20] This Performance-Based RSU Award Notice (this “Award Notice”), dated as of the date of grant as reflected in your [third party administrator] account (the “Grant Date”), sets forth the terms and conditions of an award (this “Award”) of performance-based restricted stock units (“PB-RSUs”) that is subject to the terms and conditions specified here

PERFORMANCE-BASED RSU AWARD NOTICE

Exhibit 10.3 PERFORMANCE-BASED RSU AWARD NOTICE [20] This Performance-Based RSU Award Notice (this “Award Notice”), dated as of the date of grant as reflected in your [third party administrator] account (the “Grant Date”), sets forth the terms and conditions of an award (this “Award”) of performance-based restricted stock units (“PB-RSUs”) that is subject to the terms and conditions specified here

AMENDMENT NO. 10 TO THE AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT dated as of September 1, 2017 AIRBUS S.A.S. UNITED AIRLINES, INC.

Exhibit 10.4 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDMENT NO. 10 TO THE AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT dated as of September 1, 2017 between AIRBUS S.A.S. and UNITED AIRLINES, INC. This Amendmen

BOEING/UNITED AIRLINES, INC. PROPRIETARY

Exhibit 10.5 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. The Boeing Company P.O. Box 3707 Seattle, WA 98124-2207 UAL-MISC-2601694 United Airlines, Inc. 233 South Wacker Drive Chicago, Illinois 60606 Subject: *** Matters R

RESTRICTED STOCK UNIT AWARD NOTICE

Exhibit 10.2 RESTRICTED STOCK UNIT AWARD NOTICE [20] This Restricted Stock Unit Award Notice (this “Award Notice”), dated as of the date of grant as reflected in your [third party administrator] account (the “Grant Date”), sets forth the terms and conditions of an award (this “Award”) of time-vested restricted stock units (“RSUs”) that is subject to the terms and conditions specified herein and th

AMENDMENT NO. 10 TO THE AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT dated as of September 1, 2017 AIRBUS S.A.S. UNITED AIRLINES, INC.

Exhibit 10.4 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDMENT NO. 10 TO THE AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT dated as of September 1, 2017 between AIRBUS S.A.S. and UNITED AIRLINES, INC. This Amendmen

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Registrant as Spe

RESTRICTED STOCK UNIT AWARD NOTICE

Exhibit 10.2 RESTRICTED STOCK UNIT AWARD NOTICE [20] This Restricted Stock Unit Award Notice (this “Award Notice”), dated as of the date of grant as reflected in your [third party administrator] account (the “Grant Date”), sets forth the terms and conditions of an award (this “Award”) of time-vested restricted stock units (“RSUs”) that is subject to the terms and conditions specified herein and th

United's Long-Term Strategy Remains Focused on Winning Brand-Loyal Customers, Boosted by Q1 Growth in Earnings and Margins Q1 diluted earnings per share of $2.14 up 85% year-over-year; Q1 adjusted diluted earnings per share1 of $1.19 up 31% year-over

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United's Long-Term Strategy Remains Focused on Winning Brand-Loyal Customers, Boosted by Q1 Growth in Earnings and Margins Q1 diluted earnings per share of $2.14 up 85% year-over-year; Q1 adjusted diluted earnings per share1 of $1.19 up 31% year-over-year and within initial guidance of $1.00

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 21, 2026 UNITED AIRLINES HO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 21, 2026 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 21, 2026 UNITED AIRLINES HO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 21, 2026 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724

1

Exhibit 99.2 Investor Update1 Issue Date: April 21, 2026 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company"). The information in this Investor Update contains the preliminary financial and operational outlook for the second-quarter 2026 and beyond, among other items. Estimated 2Q 2026 Estimated FY 2026 Adjusted di

1

Exhibit 99.2 Investor Update1 Issue Date: April 21, 2026 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company"). The information in this Investor Update contains the preliminary financial and operational outlook for the second-quarter 2026 and beyond, among other items. Estimated 2Q 2026 Estimated FY 2026 Adjusted di

United's Long-Term Strategy Remains Focused on Winning Brand-Loyal Customers, Boosted by Q1 Growth in Earnings and Margins Q1 diluted earnings per share of $2.14 up 85% year-over-year; Q1 adjusted diluted earnings per share1 of $1.19 up 31% year-over

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United's Long-Term Strategy Remains Focused on Winning Brand-Loyal Customers, Boosted by Q1 Growth in Earnings and Margins Q1 diluted earnings per share of $2.14 up 85% year-over-year; Q1 adjusted diluted earnings per share1 of $1.19 up 31% year-over-year and within initial guidance of $1.00

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

ARS

Annual ReportUNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Registrant as Specified in its Charter Principal Executive Office Address Telephone Number State of Incorporation I.

(as of February 12, 2026) Entity Jurisdiction of Incorporation United Airlines Holdings, Inc. Delaware Wholly-owned subsidiaries*: United Airlines, Inc. Delaware ● Air Wis Services, Inc. Wisconsin ● Air Wisconsin, Inc. Wisconsin ● Domicile Management

Exhibit 21 United Airlines Holdings, Inc. and United Airlines, Inc. Subsidiaries (as of February 12, 2026) Entity Jurisdiction of Incorporation United Airlines Holdings, Inc. Delaware Wholly-owned subsidiaries*: United Airlines, Inc. Delaware ● Air Wis Services, Inc. Wisconsin ● Air Wisconsin, Inc. Wisconsin ● Domicile Management Services, Inc. ** Delaware ● CAL Cargo, S.A. de C.V.** Mexico ● CALF

UNITED AIRLINES HOLDINGS, INC. PROFIT SHARING PLAN (Amended and Restated Effective January 1, 2025, Except As Otherwise Provided Herein)

Exhibit 10.2 UNITED AIRLINES HOLDINGS, INC. PROFIT SHARING PLAN (Amended and Restated Effective January 1, 2025, Except As Otherwise Provided Herein) I.General A.Purpose. United Airlines Holdings, Inc. (the “Company”) sponsors this United Airlines Holdings, Inc. Profit Sharing Plan (the “Plan”) for the benefit of certain employees of United Airlines, Inc. and other participating Affiliates. B.Coll

AMENDMENT NO. 3 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT

Exhibit 10.117 EXECUTION VERSION AMENDMENT NO. 3 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT AMENDMENT NO. 3 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT (this “Amendment”), dated as of November 1, 2024 among UNITED AIRLINES, INC., a Delaware corporation (the “Borrower”), UNITED AIRLINES HOLDINGS, INC., a Delaware corporation (“Parent”), JPMORGAN CHASE BANK, N.A., as Fronting Lender (as defined below

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Registrant as Specified in its Charter Principal Executive Office Address Telephone Number State of Incorporation I.

SUPPLEMENTAL AGREEMENT NO. 15 PURCHASE AGREEMENT NUMBER 04815 THE BOEING COMPANY UNITED AIRLINES, INC. relating to BOEING MODEL 787 AIRCRAFT

Exhibit 10.108 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. SUPPLEMENTAL AGREEMENT NO. 15 to PURCHASE AGREEMENT NUMBER 04815 between THE BOEING COMPANY and UNITED AIRLINES, INC. relating to BOEING MODEL 787 AIRCRAFT THIS S

UNITED AIRLINES HOLDINGS, INC. SECURITIES TRADING POLICY Revised: January 1, 2026

Exhibit 19 UNITED AIRLINES HOLDINGS, INC. SECURITIES TRADING POLICY Revised: January 1, 2026 The Code of Ethics and Business Conduct and this United Airlines Holdings, Inc. Securities Trading Policy (“Securities Trading Policy”) describe the limitations on trading activities in securities of United Airlines Holdings, Inc., United Airlines, Inc. and their respective subsidiaries (collectively, the

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES

Exhibit 4.20 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 United Airlines Holdings, Inc. (“UAL,” “we,” “us” or “our”) has two classes of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): our common stock, par value $0.01 per share (“Common Stock”), and the rights (ea

(as of February 12, 2026) Entity Jurisdiction of Incorporation United Airlines Holdings, Inc. Delaware Wholly-owned subsidiaries*: United Airlines, Inc. Delaware ● Air Wis Services, Inc. Wisconsin ● Air Wisconsin, Inc. Wisconsin ● Domicile Management

Exhibit 21 United Airlines Holdings, Inc. and United Airlines, Inc. Subsidiaries (as of February 12, 2026) Entity Jurisdiction of Incorporation United Airlines Holdings, Inc. Delaware Wholly-owned subsidiaries*: United Airlines, Inc. Delaware ● Air Wis Services, Inc. Wisconsin ● Air Wisconsin, Inc. Wisconsin ● Domicile Management Services, Inc. ** Delaware ● CAL Cargo, S.A. de C.V.** Mexico ● CALF

REPLACED WITH ASTERISKS.

Exhibit 10.29 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDMENT NO. 9 TO THE AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT dated as of September 1, 2017 between AIRBUS S.A.S. and UNITED AIRLINES, INC. This Amendmen

REPLACED WITH ASTERISKS.

Exhibit 10.29 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDMENT NO. 9 TO THE AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT dated as of September 1, 2017 between AIRBUS S.A.S. and UNITED AIRLINES, INC. This Amendmen

AMENDMENT NO. 4 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT

Exhibit 10.118 EXECUTION VERSION AMENDMENT NO. 4 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT AMENDMENT NO. 4 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT (this “Amendment”), dated as of February 3, 2026 among UNITED AIRLINES, INC., a Delaware corporation (the “Borrower”), UNITED AIRLINES HOLDINGS, INC., a Delaware corporation (“Parent”), JPMORGAN CHASE BANK, N.A., as Fronting Lender (as defined below

UNITED AIRLINES HOLDINGS, INC. SECURITIES TRADING POLICY Revised: January 1, 2026

Exhibit 19 UNITED AIRLINES HOLDINGS, INC. SECURITIES TRADING POLICY Revised: January 1, 2026 The Code of Ethics and Business Conduct and this United Airlines Holdings, Inc. Securities Trading Policy (“Securities Trading Policy”) describe the limitations on trading activities in securities of United Airlines Holdings, Inc., United Airlines, Inc. and their respective subsidiaries (collectively, the

SUPPLEMENTAL AGREEMENT NO. 15 PURCHASE AGREEMENT NUMBER 04815 THE BOEING COMPANY UNITED AIRLINES, INC. relating to BOEING MODEL 787 AIRCRAFT

Exhibit 10.108 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. SUPPLEMENTAL AGREEMENT NO. 15 to PURCHASE AGREEMENT NUMBER 04815 between THE BOEING COMPANY and UNITED AIRLINES, INC. relating to BOEING MODEL 787 AIRCRAFT THIS S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Registrant as Specified in its Charter Principal Executive Office Address Telephone Number State of Incorporation I.

UNITED AIRLINES HOLDINGS, INC. PROFIT SHARING PLAN (Amended and Restated Effective January 1, 2025, Except As Otherwise Provided Herein)

Exhibit 10.2 UNITED AIRLINES HOLDINGS, INC. PROFIT SHARING PLAN (Amended and Restated Effective January 1, 2025, Except As Otherwise Provided Herein) I.General A.Purpose. United Airlines Holdings, Inc. (the “Company”) sponsors this United Airlines Holdings, Inc. Profit Sharing Plan (the “Plan”) for the benefit of certain employees of United Airlines, Inc. and other participating Affiliates. B.Coll

AMENDMENT NO. 4 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT

Exhibit 10.118 EXECUTION VERSION AMENDMENT NO. 4 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT AMENDMENT NO. 4 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT (this “Amendment”), dated as of February 3, 2026 among UNITED AIRLINES, INC., a Delaware corporation (the “Borrower”), UNITED AIRLINES HOLDINGS, INC., a Delaware corporation (“Parent”), JPMORGAN CHASE BANK, N.A., as Fronting Lender (as defined below

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES

Exhibit 4.20 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 United Airlines Holdings, Inc. (“UAL,” “we,” “us” or “our”) has two classes of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): our common stock, par value $0.01 per share (“Common Stock”), and the rights (ea

AMENDMENT NO. 3 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT

Exhibit 10.117 EXECUTION VERSION AMENDMENT NO. 3 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT AMENDMENT NO. 3 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT (this “Amendment”), dated as of November 1, 2024 among UNITED AIRLINES, INC., a Delaware corporation (the “Borrower”), UNITED AIRLINES HOLDINGS, INC., a Delaware corporation (“Parent”), JPMORGAN CHASE BANK, N.A., as Fronting Lender (as defined below

UNITED AIRLINEs HOLDINGS, INC. $1,000,000,000 4.875% Senior Notes due 2029 UNDERWRITING AGREEMENT

Exhibit 1.1 Execution Version UNITED AIRLINEs HOLDINGS, INC. $1,000,000,000 4.875% Senior Notes due 2029 UNDERWRITING AGREEMENT February 3, 2026 BARCLAYS CAPITAL INC. BOFA SECURITIES, INC. As representatives of the several underwriters named in Schedule I hereto c/o Barclays Capital Inc. 745 Seventh Avenue New York, New York 10019 c/o BofA Securities, Inc. One Bryant Park New York, New York 10036

SEVENTH SUPPLEMENTAL INDENTURE

  Exhibit 4.2     SEVENTH SUPPLEMENTAL INDENTURE   Dated as of February 6, 2026,   among   UNITED AIRLINES HOLDINGS, INC.,   UNITED AIRLINES, INC.,   and   THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.,   as Trustee             TABLE OF CONTENTS   Page Section 1. Defined Terms 1     Section 2. Relation to Original Indenture 1     Section 3. Terms of the Notes 1 3.1 Issuer 1 3.2 Title and Form 1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 6, 2026 UNITED AIRLINES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 6, 2026 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-209972

Security Type

Calculation of Filing Fee Tables S-3 United Airlines Holdings, Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

$1,000,000,000 4.875% Senior Notes due 2029 Guaranteed by United Airlines, Inc.

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(2)   Registration Nos. 333-275664 and 333-275664-01 PROSPECTUS SUPPLEMENT (To Prospectus dated November 20, 2023) $1,000,000,000 4.875% Senior Notes due 2029 Guaranteed by United Airlines, Inc. We will pay interest at the rate of 4.875% per year on the principal amount of the notes semiannually in arrears on March 1 and September 1 of each year, beg

Subject to Completion dated February 3, 2026

TABLE OF CONTENTS This preliminary prospectus supplement relates to an effective registration statement under the Securities Act of 1933, as amended, but it is not complete and may be changed.

United Airlines Holdings, Inc. $1,000,000,000 4.875% Senior Notes due 2029

Issuer Free Writing Prospectus Filed pursuant to Rule 433(d) Registration Nos. 333-275664 and 333-275664-01 PRICING SUPPLEMENT February 3, 2026 United Airlines Holdings, Inc. $1,000,000,000 4.875% Senior Notes due 2029 Pricing Supplement dated February 3, 2026 to the Preliminary Prospectus Supplement dated February 3, 2026 of United Airlines Holdings, Inc. (“UAL”) (the “Preliminary Prospectus Supp

SIXTH SUPPLEMENTAL INDENTURE Dated as of February 2, 2026, UNITED AIRLINES HOLDINGS, INC., UNITED AIRLINES, INC., THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee TABLE OF CONTENTS

Exhibit 4.2 SIXTH SUPPLEMENTAL INDENTURE Dated as of February 2, 2026, among UNITED AIRLINES HOLDINGS, INC., UNITED AIRLINES, INC., and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee TABLE OF CONTENTS Page Section 1. Defined Terms 1 Section 2. Relation to Original Indenture 1 Section 3. Terms of the Notes 1 3.1 Issuer 1 3.2 Title and Form 1 3.3 Aggregate Principal Amount 1 3.4 Princip

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 2, 2026 UNITED AIRLINES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 2, 2026 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-209972

UNITED AIRLINEs HOLDINGS, INC. $1,000,000,000 5.375% Senior Notes due 2031 UNDERWRITING AGREEMENT

Exhibit 1.1 Execution Version UNITED AIRLINEs HOLDINGS, INC. $1,000,000,000 5.375% Senior Notes due 2031 UNDERWRITING AGREEMENT January 26, 2026 BARCLAYS CAPITAL INC. As representative of the several underwriters named in Schedule I hereto c/o Barclays Capital Inc. 745 Seventh Avenue New York, New York 10019 Ladies and Gentlemen: United Airlines Holdings, Inc., a Delaware corporation (formerly kno

$1,000,000,000 5.375% Senior Notes due 2031 Guaranteed by United Airlines, Inc.

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(2)   Registration Nos. 333-275664 and 333-275664-01 PROSPECTUS SUPPLEMENT (To Prospectus dated November 20, 2023) $1,000,000,000 5.375% Senior Notes due 2031 Guaranteed by United Airlines, Inc. We will pay interest at the rate of 5.375% per year on the principal amount of the notes semiannually in arrears on March 1 and September 1 of each year, beg

Security Type

Calculation of Filing Fee Tables S-3 United Airlines Holdings, Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forw

United Airlines Holdings, Inc. $1,000,000,000 5.375% Senior Notes due 2031

Issuer Free Writing Prospectus Filed pursuant to Rule 433(d) Registration Nos. 333-275664 and 333-275664-01 PRICING SUPPLEMENT January 26, 2026 United Airlines Holdings, Inc. $1,000,000,000 5.375% Senior Notes due 2031 Pricing Supplement dated January 26, 2026 to the Preliminary Prospectus Supplement dated January 26, 2026 of United Airlines Holdings, Inc. (“UAL”) (the “Preliminary Prospectus Supp

Subject to Completion dated January 26, 2026

TABLE OF CONTENTS This preliminary prospectus supplement relates to an effective registration statement under the Securities Act of 1933, as amended, but it is not complete and may be changed.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 20, 2026 UNITED AIRLINES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 20, 2026 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-209972

United Airlines Q4 and Full Year EPS Beat Wall Street Expectations, With Full Year EPS Up Year-Over-Year Delivered FY25 diluted earnings per share of $10.20 up 8% year-over-year; adjusted diluted earnings per share1 of $10.62 up year-over-year and ex

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Airlines Q4 and Full Year EPS Beat Wall Street Expectations, With Full Year EPS Up Year-Over-Year Delivered FY25 diluted earnings per share of $10.20 up 8% year-over-year; adjusted diluted earnings per share1 of $10.62 up year-over-year and expects to be the only U.S. airline to grow

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Exhibit 99.2 Investor Update1 Issue Date: January 20, 2026 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company"). The information in this Investor Update contains the preliminary financial outlook for the Company for first-quarter and full-year 2026, among other items. Estimated 1Q 2026 Estimated FY 2026 Adjusted di

AMENDMENT NO. 8 TO THE AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT dated as of September 1, 2017 AIRBUS S.A.S. UNITED AIRLINES, INC.

Exhibit 10.1 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDMENT NO. 8 TO THE AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT dated as of September 1, 2017 between AIRBUS S.A.S. and UNITED AIRLINES, INC. This Amendment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Re

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Exhibit 99.2 Investor Update1 Issue Date: October 15, 2025 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company"). The information in this Investor Update contains the preliminary financial outlook for the Company for fourth-quarter, among other items. Estimated 4Q 2025 Adjusted diluted earnings per share2 $3.00 - $3

United Airlines Continues to Win Brand-Loyal Customers as Q3 Profit and Q4 Outlook Both Exceed Wall Street Expectations Q3 diluted earnings per share of $2.90; Q3 adjusted diluted earnings per share1 of $2.78, above the top end of guidance; Q4 adjust

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Airlines Continues to Win Brand-Loyal Customers as Q3 Profit and Q4 Outlook Both Exceed Wall Street Expectations Q3 diluted earnings per share of $2.90; Q3 adjusted diluted earnings per share1 of $2.78, above the top end of guidance; Q4 adjusted diluted earnings per share guidance of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 15, 2025 UNITED AIRLINES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 15, 2025 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-209972

Amendment No. 7, dated as of June 30, 2025, to the Amended and Restated A350-900 Purchase Agreement, dated as of September 1, 2017, including letter agreements related thereto, between Airbus S.A.S. and United Airlines, Inc.

Exhibit 10.2 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDMENT NO. 7 TO THE AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT dated as of September 1, 2017 between AIRBUS S.A.S. and UNITED AIRLINES, INC. This Amendment

Form of Share Unit Award Notice pursuant to the United Airlines Holdings, Inc. 2006 Director Equity Incentive Plan (for awards granted on or after May 2025)

Exhibit 10.1 SHARE UNIT AWARD NOTICE [20] This Share Unit Award Notice (the “Award Notice”) under the United Airlines Holdings, Inc. 2006 Director Equity Incentive Plan, as amended and/or restated from time to time (the “Plan”), dated as of the date of grant as reflected in your Fidelity account (the “Grant Date”), sets forth the terms and conditions of an award of share units (the “Award”) that i

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Registr

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Exhibit 99.2 Investor Update1 Issue Date: July 16, 2025 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company"). The information in this Investor Update contains the preliminary financial and operational outlook for the Company for third-quarter and full-year 2025, among other items. Estimated 3Q 2025 Estimated FY 202

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 16, 2025 UNITED AIRLINES HOL

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 16, 2025 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724 (

United Airlines Reports Second-Quarter Profit, Sees Third-Quarter Positive Inflection in Both Supply and Demand Airline expects less geopolitical and macroeconomic uncertainty in second half of 2025, with demand inflection beginning in early July wit

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Airlines Reports Second-Quarter Profit, Sees Third-Quarter Positive Inflection in Both Supply and Demand Airline expects less geopolitical and macroeconomic uncertainty in second half of 2025, with demand inflection beginning in early July with a 6 point acceleration in booking demand

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 7, 2025 UNITED AIRLINES HOLD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 7, 2025 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724 (S

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 13, 2025 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 21, 2025 UNITED AIRLINES HOLD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 21, 2025 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission (IRS Employer

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Regist

Amendment No. 6, dated as of March 31, 2025, to the Amended and Restated A350-900 Purchase Agreement, dated as of September 1, 2017, including letter agreements related thereto, between Airbus S.A.S and United Airlines, Inc.

Exhibit 10.2 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDMENT NO. 6 TO THE AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT dated as of September 1, 2017 between AIRBUS S.A.S. and UNITED AIRLINES, INC. This Amendment

Amendment No. 7 to the A320 Family Purchase Agreement, effective as of March 6, 2025, between Airbus S.A.S. and United Airlines, Inc.

Exhibit 10.1 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDMENT NO. 7 TO THE A320 FAMILY PURCHASE AGREEMENT dated as of December 3, 2019 between AIRBUS S.A.S. and UNITED AIRLINES, INC. This Amendment No. 7 to the A320

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 15, 2025 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724

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Exhibit 99.2 Investor Update1 Issue Date: April 15, 2025 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company" or "UAL"). The information in this Investor Update contains the preliminary financial and operational outlook for the Company for second-quarter and full-year 2025, among other items. The Company’s outlook i

United Airlines Reports Best First-Quarter Financial Performance in Five Years Despite Challenging Macroeconomic Environment Q1 pre-tax margin up 4.9 points year-over-year, ahead of Wall Street consensus; up 3.6 points on an adjusted basis1 Q1 pre-ta

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Airlines Reports Best First-Quarter Financial Performance in Five Years Despite Challenging Macroeconomic Environment Q1 pre-tax margin up 4.9 points year-over-year, ahead of Wall Street consensus; up 3.6 points on an adjusted basis1 Q1 pre-tax margin expected to lead the industry as

ARS

2024 ANNUAL REPORTMerrill Corp - Merrill Corporation ED True Blanks 8.5x11 Prospectus [Funds] Style Only | gcurry | 13-Nov-07 15:10 | 07-28247-8.tb1 | Sequence: 1 CHKSUM Content: No Content Layout: 32257 Graphics: No Graphics CLEAN JOB: 07-28247-8 CYCLE#;BL#: 1; 0 TRIM: 8.5" x 11" AS: Merrill Saint Paul: 651-646-4501 COMPOSITE COLORS: none GRAPHICS: none V1.5UNITED STATES SECURITIES AND EXCHANGE C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

United Airlines Holdings, Inc. Profit Sharing Plan (amended and restated effective January 1, 2024)

Exhibit 10.2 UNITED AIRLINES HOLDINGS, INC. PROFIT SHARING PLAN (Amended and Restated Effective January 1, 2024, Except As Otherwise Provided Herein) I.General A.Purpose. United Airlines Holdings, Inc. (the “Company”) sponsors this United Airlines Holdings, Inc. Profit Sharing Plan (the “Plan”) for the benefit of certain employees of United Airlines, Inc. and other participating Affiliates. B.Coll

Letter Agreement No. UAL-NM-2404793, dated as of October 24, 2024, between The Boeing Company and United Airlines, Inc. (related to Purchase Agreement No. 04815)

Exhibit 10.111 The Boeing Company P.O. Box 3707 Seattle, WA 98124 2207 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. UAL-NM-2404793 United Airlines, Inc. 233 South Wacker Drive Chicago, Illinois 60606 Subject: *** of *** 78

Description of the Registrant's Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934

Exhibit 4.31 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 United Airlines Holdings, Inc. (“UAL,” “we,” “us” or “our”) has two classes of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): our common stock, par value $0.01 per share (“Common Stock”), and the rights (ea

List of United Airlines Holdings, Inc. and United Airlines, Inc. Subsidiaries

Exhibit 21 United Airlines Holdings, Inc. and United Airlines, Inc. Subsidiaries (as of February 27, 2025) Entity Jurisdiction of Incorporation United Airlines Holdings, Inc. Delaware Wholly-owned subsidiaries*: United Airlines, Inc. Delaware ● Air Wis Services, Inc. Wisconsin ● Air Wisconsin, Inc. Wisconsin ● Domicile Management Services, Inc. ** Delaware ● CAL Cargo, S.A. de C.V.** Mexico ● CALF

Form of Performance-Based RSU Award Notice pursuant to the 2021 Incentive Compensation Plan

Exhibit 10.20 PERFORMANCE-BASED RSU AWARD NOTICE [20] This Performance-Based RSU Award Notice (this “Award Notice”), dated as of the date of grant as reflected in your [third party administrator] account (the “Grant Date”), sets forth the terms and conditions of an award (this “Award”) of performance-based restricted stock units (“PB-RSUs”) that is subject to the terms and conditions specified her

Amendment No. 5, dated as of December 26, 2024, to the Amended and Restated A350-900 Purchase Agreement, dated as of September 1, 2017, including letter agreements related thereto, between Airbus S.A.S. and United Airlines, Inc

Exhibit 10.30 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDMENT NO. 5 TO THE AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT dated as of September 1, 2017 between AIRBUS S.A.S. and UNITED AIRLINES, INC. This Amendmen

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Registrant as Specified in its Charter Principal Executive Office Address Telephone Number State of Incorporation I.

Supplemental Agreement No. 14 to Purchase Agreement No. 04815, dated as of October 24, 2024, between The Boeing Company and United Airlines, Inc.

Exhibit 10.107 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. SUPPLEMENTAL AGREEMENT NO. 14 to PURCHASE AGREEMENT NUMBER 04815 between THE BOEING COMPANY and UNITED AIRLINES, INC. relating to BOEING MODEL 787 AIRCRAFT THIS S

Form of Cash Transformation Incentive Award Notice pursuant to the United Airlines Holdings, Inc. 2021 Incentive Compensation Plan

Exhibit 10.23 CASH TRANSFORMATION INCENTIVE AWARD NOTICE This Cash Transformation Incentive Award Notice (this “Award Notice”) sets forth the terms and conditions of your Cash Transformation Incentive Award (the “Award”) that is subject to the terms and conditions specified herein and that is granted to you by United Airlines Holdings, Inc., a Delaware corporation (the “Company”), under the United

United Continental Holdings, Inc. Executive Severance Plan (amended and restated effective December 6, 2023)

Exhibit 10.10 UNITED AIRLINES HOLDINGS, INC. EXECUTIVE SEVERANCE PLAN (Amended and Restated Effective December 6, 2023) In order to encourage the retention of key management employees and to replace severance benefits previously provided under employment agreements with certain officers, the Compensation Committee of the Board of Directors (the “Committee”) of United Airlines Holdings, Inc., a Del

United Airlines Holdings, Inc. Securities Trading Policy

Exhibit 19 UNITED AIRLINES HOLDINGS, INC. SECURITIES TRADING POLICY Revised: January 30, 2025 The Code of Ethics and Business Conduct and this United Airlines Holdings, Inc. Securities Trading Policy (“Securities Trading Policy”) describe the limitations on trading activities in securities of United Airlines Holdings, Inc., United Airlines, Inc. and their respective subsidiaries (collectively, the

Form of Restricted Stock Unit Award Notice pursuant to the 2021 Incentive Compensation Plan

Exhibit 10.19 RESTRICTED STOCK UNIT AWARD NOTICE This Restricted Stock Unit Award Notice (this “Award Notice”), dated as of the date of grant as reflected in your [third party administrator] account (the “Grant Date”), sets forth the terms and conditions of an award (this “Award”) of time-vested restricted stock units (“RSUs”) that is subject to the terms and conditions specified herein and that i

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 31, 2025 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-209972

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Exhibit 99.2 Investor Update1 Issue Date: January 21, 2025 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company" or "UAL"). The information in this Investor Update contains the preliminary financial and operational outlook for the Company for first-quarter and full-year 2025, among other items. Estimated 1Q 2025 Esti

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 21, 2025 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-209972

United Airlines Achieves Record Fourth Quarter Profit Well Ahead Of Expectations; Reiterates Path To Double-Digit Pre-Tax Margin Q4 pre-tax margin up 3.2 points year-over-year, 3.5 points on an adjusted basis1 Finished the year first in on-time depar

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Airlines Achieves Record Fourth Quarter Profit Well Ahead Of Expectations; Reiterates Path To Double-Digit Pre-Tax Margin Q4 pre-tax margin up 3.2 points year-over-year, 3.5 points on an adjusted basis1 Finished the year first in on-time departures at all seven United hubs Sees robust

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 13, 2025 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission (IRS Empl

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 12, 2024 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission (IRS Emp

Amended and Restated Bylaws, as adopted on December 12, 2024

Exhibit 3.1 AMENDED AND RESTATED BYLAWS OF UNITED AIRLINES HOLDINGS, INC. Article 1 Definitions As used in these Restated Bylaws, unless the context otherwise requires, the following terms shall have the following meanings: 1.1              “Affiliate” and “Associate” each shall have the respective meanings set forth in Rule 12b-2 under the Exchange Act (as defined below). 1.2              “Assist

Amendment No. 6 to the A320 Family Purchase Agreement, dated as of July 16, 2024, between Airbus S.A.S. and United Airlines, Inc.

Exhibit 10.1 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDMENT NO. 6 TO THE A320 FAMILY PURCHASE AGREEMENT dated as of December 3, 2019 between AIRBUS S.A.S. and UNITED AIRLINES, INC. This Amendment No. 6 to the A320

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Re

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 15, 2024 UNITED AIRLINES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 15, 2024 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-209972

United Airlines Announces Third-Quarter 2024 Financial Results: Exceeds Earnings Per Share Expectations Announces $1.5 billion share repurchase program Year-to-date generated $7.2 billion of operating cash flow and $3.4 billion free cash flow Company

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Airlines Announces Third-Quarter 2024 Financial Results: Exceeds Earnings Per Share Expectations Announces $1.5 billion share repurchase program Year-to-date generated $7.2 billion of operating cash flow and $3.4 billion free cash flow Company sees revenue trends improve as industry r

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Exhibit 99.2 Investor Update1 Issue Date: October 15, 2024 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company" or "UAL"). The information in this Investor Update contains the preliminary financial and operational outlook for the Company for fourth-quarter and full-year 2024, among other items. Estimated 4Q 2024 Adj

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 16, 2024 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission (IRS Em

Letter Agreement No. 2401454, dated as of April 14, 2024, between The Boeing Company and United Airlines, Inc. (related to Purchase Agreement Nos. 03776 and 04761)

Exhibit 10.2 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. The Boeing Company P.O. Box 3707 Seattle, WA 98124 2207 UAL-MISC-2401454 United Airlines, Inc. 233 South Wacker Drive Chicago, Illinois 60606 Subject: Accommodation

Letter Agreement No. 2401633, dated as of April 14, 2024, between The Boeing Company and United Airlines, Inc. (related to Purchase Agreement Nos. 03776 and 04761)

Exhibit 10.3 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. The Boeing Company P.O. Box 3707 Seattle, WA 98124-2207 UAL-MISC-2401633 United Airlines, Inc. 233 South Wacker Drive Chicago, Illinois 60606 Subject: Accommodation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Registr

Increase Joinder to the Amended and Restated Revolving Credit and Guaranty Agreement, dated as of April 16, 2024, among United Airlines, Inc., United Airlines Holdings, Inc., the lenders party thereto, JPMorgan Chase Bank, N.A., as administrative agent, and Wilmington Trust, National Association, as collateral trustee

Exhibit 10.4 EXECUTION VERSION INCREASE JOINDER TO THE AMENDED AND RESTATED REVOLVING CREDIT AND GUARANTY AGREEMENT This INCREASE JOINDER, dated as of April 16, 2024 (the “Increase Joinder”) amends the Amended and Restated Revolving Credit and Guaranty Agreement, dated as of February 15, 2024 (as amended, restated, amended and restated, supplemented, modified or extended from time to time in accor

1

Exhibit 99.2 Investor Update1 Issue Date: July 17, 2024 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company" or "UAL"). The information in this Investor Update contains the preliminary financial and operational outlook for the Company for third-quarter and full-year 2024, among other items. Estimated 3Q 2024 Estimat

United Airlines Announces Second-Quarter 2024 Financial Results; Achieves 2Q EPS Expectations 2Q pre-tax margin expected to be among industry leaders, despite excess industry capacity in the domestic market Expect best unit revenue performance among

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Airlines Announces Second-Quarter 2024 Financial Results; Achieves 2Q EPS Expectations 2Q pre-tax margin expected to be among industry leaders, despite excess industry capacity in the domestic market Expect best unit revenue performance among large peers United's key revenue diversity

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 17, 2024 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724 (

Termination of a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 2, 2024 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724 (S

Calculation of Filing Fee Table.

EXHIBIT 107 Calculation of Filing Fee Table FORM S-8 (Form Type) UNITED AIRLINES HOLDINGS, INC.

As filed with the Securities and Exchange Commission on May 31, 2024

As filed with the Securities and Exchange Commission on May 31, 2024 Registration No.

Second Amendment to the United Airlines Holdings, Inc. Amended and Restated 2021 Incentive Compensation Plan.

Exhibit 10.1 SECOND AMENDMENT TO UNITED AIRLINES HOLDINGS, INC. AMENDED AND RESTATED 2021 INCENTIVE COMPENSATION PLAN WHEREAS, United Airlines Holdings, Inc. (the “Company”) has heretofore adopted the United Airlines Holdings, Inc. Amended and Restated 2021 Incentive Compensation Plan (the “Plan”) which was approved by stockholders effective May 26, 2021 at the Company’s 2021 Annual Meeting of Sto

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 22, 2024 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission (IRS Employer

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 28, 2024 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724 (S

Entry into a Material Definitive Agreement, Material Modification to Rights of Security Holders, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 22, 2024 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission File Number

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. 1) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

Amendment No. 3 to Tax Benefits Preservation Plan, dated as of April 22, 2024, by and between the Company and Computershare Trust Company, N.A., as rights agent.

Exhibit 4.4 AMENDMENT NO. 3 TO TAX BENEFITS PRESERVATION PLAN This Amendment No. 3 to Tax Benefits Preservation Plan (this “Amendment”) is made and entered into as of April 22, 2024, by and between United Airlines Holdings, Inc., a Delaware corporation (the “Company”), and Computershare Trust Company, N.A., a federally chartered trust company, as rights agent (the “Rights Agent”), and amends that

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A/A (Amendment No. 2) FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A/A (Amendment No. 2) FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 36-2675207 (State or other jurisdiction of incorporation or organization) (IRS E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Regist

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 16, 2024 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724

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Exhibit 99.2 Investor Update1 Issue Date: April 16, 2024 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company" or "UAL"). The information in this Investor Update contains the preliminary financial and operational outlook for the Company for second-quarter and full-year 2024, among other items. Estimated 2Q 2024 Estim

United Airlines Announces First-Quarter 2024 Financial Results; Exceeds Revenue and EPS Expectations First-quarter diluted loss per share of $0.38; first-quarter adjusted diluted loss per share1 of $0.15 - ahead of expectations Updates fleet plan - a

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Airlines Announces First-Quarter 2024 Financial Results; Exceeds Revenue and EPS Expectations First-quarter diluted loss per share of $0.38; first-quarter adjusted diluted loss per share1 of $0.15 - ahead of expectations Updates fleet plan - allowing for a more consistent delivery sch

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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☐ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defi

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 28, 2024 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission (IRS Employ

United Airlines Names Michelle Freyre to Board of Directors

Exhibit 99.1 United Airlines Names Michelle Freyre to Board of Directors CHICAGO, April 1, 2024 – United Airlines Holdings, Inc. (UAL) announced today that Michelle Freyre is joining its Board of Directors. Freyre currently serves as President, Global Brands, Clinique and Origins, at The Estée Lauder Companies, where she is responsible for guiding the brands’ overall strategic vision and driving g

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 29, 2024 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-20997

United Airlines Holdings, Inc. Profit Sharing Plan (amended and restated effective January 1, 2023)

Exhibit 10.2 UNITED AIRLINES HOLDINGS, INC. PROFIT SHARING PLAN (Amended and Restated Effective January 1, 2023, Except As Otherwise Provided Herein) I.General A.Purpose. United Airlines Holdings, Inc. (the “Company”) sponsors this United Airlines Holdings, Inc. Profit Sharing Plan (the “Plan”) for the benefit of certain employees of United Airlines, Inc. and other participating Affiliates. B.Coll

Form of Retirement and Transition Agreement

Exhibit 10.25 Form of Retirement and Transition Agreement This Retirement and Transition Agreement (“Agreement”) is entered into on (the “Effective Date”) among (“Executive”), United Airlines Holdings, Inc. (“UAL”), and United Airlines, Inc. (“Company”), a wholly-owned subsidiary of UAL. 1.Retirement and Transition. Executive currently serves as (“EVP”) of UAL and the Company and as a director and

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Registrant as Specified in its Charter, Principal Executive Office Address and Telephone Number State of Incorporation I.

Supplemental Agreement No. 21 to Purchase Agreement No. 03776, dated as of December 15, 2023, between The Boeing Company and United Airlines, Inc.

Exhibit 10.55 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 21 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737 MAX Aircraft THIS S

Amendment No. 4 to the A320 Family Purchase Agreement, dated as of July 1, 2022, between Airbus S.A.S. and United Airlines, Inc.

Exhibit 10.76 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDMENT NO. 4 TO THE A320 FAMILY PURCHASE AGREEMENT dated as of December 3, 2019 between AIRBUS S.A.S. and UNITED AIRLINES, INC. This Amendment No. 4 to the A320

United Airlines Holdings, Inc. Compensation Clawback Policy

Exhibit 97.1 ADOPTED MAY 25, 2023 UNITED AIRLINES HOLDINGS, INC. COMPENSATION CLAWBACK POLICY A. Statement of Policy The Compensation Committee (the “Committee”) of the Board of Directors (the “Board”) of United Airlines Holdings, Inc. (the “Company”) has determined that it is in the best interests of the Company and its stockholders to adopt this Compensation Clawback Policy (“Policy”) effective

Amended and Restated Letter Agreement No. 2, dated as of July 1, 2022, between Airbus S.A.S. and United Airlines, Inc.

Exhibit 10.78 AMENDED AND RESTATED LETTER AGREEMENT NO. 2 TO THE A320 FAMILY PURCHASE AGREEMENT As of July 1, 2022 UNITED AIRLINES, INC. 233 South Wacker Drive Chicago, Illinois 60606 USA Re: CREDIT MATTERS Dear Ladies and Gentlemen, UNITED AIRLINES, INC. (the “Buyer”), and AIRBUS S.A.S. (the “Seller”), have entered into an A320 Family Purchase Agreement dated as of December 3, 2019 (the “Agreemen

List of United Airlines Holdings, Inc. and United Airlines, Inc. Subsidiaries

Exhibit 21 United Airlines Holdings, Inc. and United Airlines, Inc. Subsidiaries (as of February 29, 2024) Entity Jurisdiction of Incorporation United Airlines Holdings, Inc. Delaware Wholly-owned subsidiaries*: United Airlines, Inc. Delaware ● Air Wis Services, Inc. Wisconsin ● Air Wisconsin, Inc. Wisconsin ● Domicile Management Services, Inc. ** Delaware ● Air Micronesia, LLC. Delaware ● CAL Car

Description of the Registrant's Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934

Exhibit 4.30 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 United Airlines Holdings, Inc., (“UAL,” “we,” “us” or “our”) has two classes of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): our common stock, par value $0.01 per share (“Common Stock”), and the rights (e

Supplemental Agreement No. 13 to Purchase Agreement No. 04761, dated as of December 15, 2023, between The Boeing Company and United Airlines, Inc.

Exhibit 10.92 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. SUPPLEMENTAL AGREEMENT NO. 13 to PURCHASE AGREEMENT NUMBER 04761 between THE BOEING COMPANY and United Airlines, Inc. Relating to Boeing Model 737 MAX Aircraft THI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 28, 2024 UNITED AIRLINES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 28, 2024 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission (IRS Emp

United Airlines Names Rosalind Brewer to Board of Directors

Exhibit 99.1 United Airlines Names Rosalind Brewer to Board of Directors CHICAGO, February 28, 2024 – United Airlines Holdings, Inc. (UAL) announced today that Rosalind (Roz) Brewer is joining its Board of Directors. Brewer is an influential leader with CEO experience, repeatedly recognized by Fortune and Forbes among their “Most Powerful Women in Business.” “Roz’s strategic acumen and visionary l

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 16, 2

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 16, 2024 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (

Amendment No. 2 to Term Loan Credit and Guaranty Agreement, dated as of February 22, 2024, among United Airlines, Inc., United Airlines Holdings, Inc., and JPMorgan Chase Bank, N.A., as fronting lender and replacement lender and as administrative agent (filed as Exhibit 10.2 to UAL's Form 8-K filed February 22, 2024 and incorporated herein by reference)

Exhibit 10.2 Execution Copy AMENDMENT NO. 2 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT AMENDMENT NO. 2 TO TERM LOAN CREDIT AND GUARANTY AGREEMENT (this “Amendment”), dated as of February 22, 2024 among UNITED AIRLINES, INC., a Delaware corporation (the “Borrower”), UNITED AIRLINES HOLDINGS, INC., a Delaware corporation (“Parent”), JPMORGAN CHASE BANK, N.A., as Fronting Lender (the “Fronting Lender

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 15, 2024 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-20997

Amended and Restated Revolving Credit and Guaranty Agreement, dated as of February 15, 2024, among United Airlines, Inc., United Airlines Holdings, Inc., each of the several banks and other financial institutions or entities from time to time party thereto, as lenders, JPMorgan Chase Bank, N.A., as administrative agent, and Wilmington Trust, National Association, as collateral trustee (filed as Exhibit 10.1 to UAL's Form 8-K filed February 22, 2024 and incorporated herein by reference)

Exhibit 10.1 EXECUTION VERSION AMENDED AND RESTATED REVOLVING CREDIT AND GUARANTY AGREEMENT dated as of February 15, 2024 among UNITED AIRLINES, INC., as Borrower, UNITED AIRLINES HOLDINGS, INC., as Parent and a Guarantor, THE SUBSIDIARIES OF THE PARENT PARTY HERETO OTHER THAN THE BORROWER, as Guarantors, THE LENDERS PARTY HERETO, JPMORGAN CHASE BANK, N.A., as Administrative Agent, WILMINGTON TRUS

UAL / United Airlines Holdings, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv02152-unitedairlinesholdin.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: United Airlines Holdings Inc Title of Class of Securities: Common Stock CUSIP Number: 910047109 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate

UAL / United Airlines Holdings, Inc. / PRIMECAP MANAGEMENT CO/CA/ - PRIMECAP MANAGEMENT CO/CA/ Passive Investment

SC 13G/A 1 uala1021224.htm PRIMECAP MANAGEMENT CO/CA/ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 10)* United Airlines Holdings, Inc. (Name of Issuer) COM (Title of Class of Securities) 910047109 (CUSIP Number) December 31, 2023 (Date of Event which Requires Filing of this Statement) Check the appropr

UAL / United Airlines Holdings, Inc. / Capital International Investors - SEC SCHEDULE 13G Passive Investment

SC 13G 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* United Airlines Holdings, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 910047109 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate

UAL / United Airlines Holdings, Inc. / BlackRock Inc. Passive Investment

SC 13G/A 1 us9100471096012924.txt us9100471096012924.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 3) United Airlines Holdings, Inc. - (Name of Issuer) Common Stock - (Title of Class of Securities) 910047109 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the app

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 22, 2024 UNITED AIRLINES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 22, 2024 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-209972

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 16, 2024 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission (IRS Empl

1

Exhibit 99.2 Investor Update1 Issue Date: January 22, 2024 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company" or "UAL"). The information in this Investor Update contains the preliminary financial and operational outlook for the Company for first-quarter and full-year 2024, among other items. Estimated 1Q 2024 Esti

United Airlines Announces Full-Year and Fourth-Quarter 2023 Financial Results Full-year diluted earnings per share of $7.89; full-year adjusted diluted earnings per share1 of $10.05 Fourth quarter diluted earnings per share of $1.81, adjusted diluted

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Airlines Announces Full-Year and Fourth-Quarter 2023 Financial Results Full-year diluted earnings per share of $7.89; full-year adjusted diluted earnings per share1 of $10.05 Fourth quarter diluted earnings per share of $1.81, adjusted diluted earnings per share1 of $2.00, ahead of ex

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 21, 2023 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission File Num

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 21, 2023 UNITED AIRLINES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 21, 2023 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-20997

Form 8-A/A filed on December 4, 2023

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A/A (Amendment No. 1) FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 36-2675207 (State or other jurisdiction of incorporation or organization) (IRS E

Entry into a Material Definitive Agreement, Material Modification to Rights of Security Holders, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 4, 2023 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission File Numb

Amendment No. 2 to Tax Benefits Preservation Plan, dated as of December 4, 2023, by and between the Company and Computershare Trust Company, N.A., as rights agent (incorporated by reference to Exhibit 4.3 to the Company’s Form 8-A/A, filed on December 4, 2023)

Exhibit 4.3 AMENDMENT NO. 2 TO TAX BENEFITS PRESERVATION PLAN This Amendment No. 2 to Tax Benefits Preservation Plan (this “Amendment”) is made and entered into as of December 4, 2023, by and between United Airlines Holdings, Inc., a Delaware corporation (the “Company”), and Computershare Trust Company, N.A., a federally chartered trust company, as rights agent (the “Rights Agent”), and amends tha

Statement of Eligibility of Trustee for the Pass Through Certificates issued by United Airlines, Inc. on Form T-1**

Exhibit 25.2 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 ¨ Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) WILMINGTON TRUST, NATIONAL ASSOCIATION (Exact name of trustee as specified in its charter) 16-1486454 (I.R.S. employer identification no.) 1100 North Market Street Wilmington, DE 19890-0001 (Address of principal

UNITED AIRLINES HOLDINGS, INC. Warrants to Purchase up to 9,928,349 Shares of Common Stock (and up to 9,928,349 Shares of Common Stock Issuable Upon Exercise of Such Warrants)

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-275664 PROSPECTUS SUPPLEMENT (To Prospectus Dated November 20, 2023) UNITED AIRLINES HOLDINGS, INC. Warrants to Purchase up to 9,928,349 Shares of Common Stock (and up to 9,928,349 Shares of Common Stock Issuable Upon Exercise of Such Warrants) This prospectus supplement and the accompanying prospectus relate to the potentia

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 20, 2023 UNITED AIRLINES H

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 20, 2023 UNITED AIRLINES HOLDINGS, INC.

Specimen Certificate of United Airlines Holdings, Inc. Common Stock**

Exhibit 4.13 ZQ|CERT#|COY|CLS|RGSTRY|ACCT#|TRANSTYPE|RUN#|TRANS# . COMMON STOCK PAR VALUE $0.01 COMMON STOCK Certificate Number ZQ00000000 Shares * * 000000 * * * * * * * * * * * * * * * * * * * * * 000000 * * * * * * * * * * * * * * * * * * * * * 000000 * * * * * * * * * * * * * * * * * * * * * 000000 * * * * * * * * * * * * * * * * * * * * * 000000 * * * * * * * * * * * * * * UNITED CONTINENTAL

Filing Fee Table**

EXHIBIT 107.1 Calculation of Filing Fee Table Form S-3 (Form Type) United Airlines Holdings, Inc. United Airlines, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee R

Statement of Eligibility of Trustee for the Debt Securities on Form T-1**

Exhibit 25.1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE o CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter) 95-3571558 (I.R.S

As filed with the Securities and Exchange Commission on November 20, 2023

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on November 20, 2023 Registration No.

Calculation of Filing Fee Table 424(b)(5) (Form Type) United Airlines Holdings, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

EXHIBIT 107.1 Calculation of Filing Fee Table 424(b)(5) (Form Type) United Airlines Holdings, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title(1) Fee Calculation or CarryForward Rule(2) Amount Registered(3) Maximum Aggregate Offering Price Carry Forward Form Type Carry Forward File Number Carry For

September 1, 2017, including letter agreements related thereto, between Airbus S.A.S. and United Airlines, Inc.

Exhibit 10.1 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT Dated as of 1 September 2017 between AIRBUS S.A.S., as Seller and UNITED AIRLINES, INC. as Buyer CT1706024 – Amende

Supplemental Agreement No. 11 to Purchase Agreement No. 03776, dated as of September 25, 2018, between The Boeing Company and United Airlines, Inc. (filed as Exhibit 10.15 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.15 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 11 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737 *** Aircraft THIS S

(filed as Exhibit 10.20 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.20 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 2 to Purchase Agreement No. 3860 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 787 Aircraft THIS SUPPLEM

Supplemental Agreement No. 12 to Purchase Agreement No. 3860, dated as of February 26, 2021, between The Boeing Company and United Airlines, Inc.

Exhibit 10.32 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 12 to Purchase Agreement No. 3860 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 787 Aircraft UAL-PA-3860

, 2023, between Airbus S.A.S. and United Airlines, Inc. (filed as Exhibit 10.37 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.37 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. CT1903666 – A320 Family Purchase Agreement – Amendment No. 5 – EXECUTION AM5-1 PROPRIETARY AND CONFIDENTIAL AMENDMENT NO. 5 TO THE A320 FAMILY PURCHASE AGREEMENT d

Supplemental Agreement No. 5 to Purchase Agreement No. 04761, dated as of February 26, 2021, between The Boeing Company and United Airlines, Inc.

Exhibit 10.33 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. SUPPLEMENTAL AGREEMENT NO. 5 to PURCHASE AGREEMENT NUMBER 04761 between THE BOEING COMPANY and UNITED AIRLINES, INC. relating to BOEING MODEL 737 MAX AIRCRAFT THIS

Aircraft General Terms Agreement, dated as of October 10, 1997, by and among Continental Airlines, Inc. and The Boeing Company (filed as Exhibit 10.2 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.2 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AIRCRAFT GENERAL TERMS AGREEMENT AGTA-CAL between THE BOEING COMPANY and CONTINENTAL AIRLINES, INC. TABLE OF CONTENTS PAGE ARTICLES NUMBER 1. Subject Matter of Sale

Supplemental Agreement No. 9 to Purchase Agreement No. 3860, dated as of May 31, 2018, between The Boeing Company and United Airlines, Inc. (filed as Exhibit 10.29 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.29 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 9 to Purchase Agreement No. 3860 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 787 Aircraft UAL-PA-3860

Amendment No. 4 to the Amended and Restated A350-900 Purchase Agreement between Airbus S.A.S. and United Airlines, Inc., effective as of September 29, 2023 (filed as Exhibit 10.36 to UAL’s Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.36 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. CT1706024 – Amended and Restated A350-900 Purchase Agreement – Amendment No. 4 – EXECUTION AM4-1 AIRBUS S.A.S. & UNITED AIRLINES, INC. – PROPRIETARY AND CONFIDENTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Re

(filed as Exhibit 10.21 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.21 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 3 to Purchase Agreement No. 3860 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 787 Aircraft THIS SUPPLEM

June 15, 2017, between The Boeing Company and United Airlines, Inc. (filed as Exhibit 10.27 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.27 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 8 to Purchase Agreement No. 3860 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 787 Aircraft THIS SUPPLEM

, dated December 27, 2016, between The Boeing Company and United Airlines, Inc

Exhibit 10.28 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. The Boeing Company P.O. Box 3707 Seattle, WA 98124-2207 UAL-LA-1604287 United Airlines, Inc. 233 South Wacker Drive Chicago, Illinois 60606 Subject: Certain *** (L

Letter Agreement No. 22004729R1, dated as of September 28, 2023, between The Boeing Company and United Airlines, Inc. (related to Purchase Agreement Nos. 03860, 04815 and 02484)

CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL.

(filed as Exhibit 10.4 to UAL's Form 10-Q for the quarter ended September 30, 2023and incorporated herein by reference)

Exhibit 10.4 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 1 to Purchase Agreement No. 03776 between The Boeing Company and United Continental Holdings, Inc. Relating to Boeing Model 737-9 Aircraf

Offer Letter, dated September 20, 2023, between United Airlines Holdings, Inc., United Airlines, Inc. and Michael Leskinen

Kate Gebo Executive Vice President, Human Resources and Labor Relations September 20, 2023 Michael D.

Supplemental Agreement No. 13 to Purchase Agreement No. 04815, dated as of September 28, 2023, between The Boeing Company and United Airlines, Inc. (filed as Exhibit 10.34 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.34 UAL-PA-04815 SA-13 Page 1 BOEING / UNITED AIRLINES, INC. PROPRIETARY CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. SUPPLEMENTAL AGREEMENT NO. 13 to PURCHASE AGREEMENT NUMBER 04815 between THE BOEING COMPANY an

Supplemental Agreement No. 15 to Purchase Agreement No. 03776, dated as of February 26, 2021, between The Boeing Company and United Airlines, Inc. (filed as Exhibit 10.17 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.17 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 15 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737 *** Aircraft THIS S

June 15, 2017, between The Boeing Company and United Airlines, Inc.

Exhibit 10.13 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 9 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737 MAX Aircraft THIS SU

December 27, 2016, between The Boeing Company and United Airlines, Inc.

Exhibit 10.11 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 7 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737-9 Aircraft THIS SUPP

March 7, 2016, between The Boeing Company and United Airlines, Inc.

Exhibit 10.25 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 7 to Purchase Agreement No. 3860 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 787 Aircraft THIS SUPPLEM

Supplemental Agreement No. 10 to Purchase Agreement No. 3860, dated as of November 1, 2018, between The Boeing Company and United Airlines, Inc. (filed as Exhibit 10.30 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

UAL-PA-3860 Exhibit 10.30 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 10 to Purchase Agreement No. 3860 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 787 Aircraft

Supplemental Agreement No. 11 to Purchase Agreement No. 3860, dated as of December 12, 2018, between The Boeing Company and United Airlines, Inc. (filed as Exhibit 10.31 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

UAL-PA-3860 Exhibit 10.31 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 11 to Purchase Agreement No. 3860 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 787 Aircraft

(filed as Exhibit 10.7 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.7 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 3 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737-9 Aircraft THIS SUPPL

October 23, 2013, between United Continental Holdings, Inc. and United Airlines, Inc.

Exhibit 10.5 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. PURCHASE AGREEMENT ASSIGNMENT by UNITED CONTINENTAL HOLDINGS, INC. to UNITED AIRLINES, INC. THIS PURCHASE AGREEMENT ASSIGNMENT (Assignment) dated as of October 23,

(filed as Exhibit 10.19 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.19 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 1 to Purchase Agreement No. 3860 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 787 Aircraft THIS SUPPLEM

(filed as Exhibit 10.22 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.22 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 4 to Purchase Agreement No. 3860 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 787 Aircraft THIS SUPPLEM

(filed as Exhibit 10.24 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.24 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 6 to Purchase Agreement No. 3860 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 787 Aircraft THIS SUPPLEM

Letter Agreement to Purchase Agreement No. 3860, dated as of May 5, 2016, between The Boeing Company and United Airlines, Inc. (filed as Exhibit 10.26 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.26 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. UAL-PA-03860- LA-1503203 United Airlines, Inc. 2 33 South Wacker Drive Chicago, Illinois 60606 Subject: Model 787-*** FlightTest Certification Program The Boeing C

(filed as Exhibit 10.6 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.6 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 2 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737-9 Aircraft THIS SUPPL

January 20, 2016, between The Boeing Company and United Airlines, Inc.

Exhibit 10.9 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 5 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737-9 Aircraft THIS SUPPL

(filed as Exhibit 10.8 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.8 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 4 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737-9 Aircraft THIS SUPPL

(filed as Exhibit 10.23 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.23 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 5 to Purchase Agreement No. 3860 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 787 Aircraft THIS SUPPLEM

Supplemental Agreement No. 12 to Purchase Agreement No. 03776, dated as of December 12, 2018, between The Boeing Company and United Airlines, Inc. (filed as Exhibit 10.16 to UAL's Form 10-Q for the year ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.16 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 12 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737 *** Aircraft THIS S

Supplemental Agreement No. 10 to Purchase Agreement No. 03776, dated as of May 15, 2018, between The Boeing Company and United Airlines, Inc. (filed as Exhibit 10.14 to UAL's Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference)

Exhibit 10.14 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 10 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737 *** Aircraft THIS S

June 7, 2017, between The Boeing Company and United Airlines, Inc.

Exhibit 10.12 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 8 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737-9 Aircraft THIS SUPP

February 8, 2016, between The Boeing Company and United Airlines, Inc.

Exhibit 10.10 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. Supplemental Agreement No. 6 to Purchase Agreement No. 03776 between The Boeing Company and United Airlines, Inc. Relating to Boeing Model 737-9 Aircraft THIS SUPP

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 17, 2023 UNITED AIRLINES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 17, 2023 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-209972

1

Exhibit 99.2 Investor Update1 Issue Date: October 17, 2023 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company" or "UAL"). The information in this Investor Update contains the preliminary financial and operational outlook for the Company for fourth-quarter 2023, among other items. 4Q 2023 (Assumes TLV Flight Suspens

United Airlines Announces Third-Quarter Financial Results: Revenue Beats Consensus on Solid Domestic - and Record-Breaking International Performance Company had record setting profits in both Atlantic and Pacific regions Pre-tax income increased 29%

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Airlines Announces Third-Quarter Financial Results: Revenue Beats Consensus on Solid Domestic - and Record-Breaking International Performance Company had record setting profits in both Atlantic and Pacific regions Pre-tax income increased 29% y-o-y; on an adjusted basis1 increased 37%

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 28, 2023 UNITED AIRLINE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 28, 2023 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099

United Orders 110 New Aircraft with Deliveries Starting in 2028 Order builds on early success of United Next strategy and includes 50 Boeing 787-9 and 60 A321neo aircraft United also secures new options for up to 50 more Boeing 787s and new purchase

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Orders 110 New Aircraft with Deliveries Starting in 2028 Order builds on early success of United Next strategy and includes 50 Boeing 787-9 and 60 A321neo aircraft United also secures new options for up to 50 more Boeing 787s and new purchase rights for up to 40 A321neos at the end of

United Names New Chief Financial Officer Michael Leskinen promoted to CFO and Executive Vice President; also becomes member of airline’s Executive Team

Exhibit 99.1 United Names New Chief Financial Officer Michael Leskinen promoted to CFO and Executive Vice President; also becomes member of airline’s Executive Team September 22, 2023 – Chicago, IL – United Airlines today announced that Michael Leskinen has been promoted to Chief Financial Officer and Executive Vice President. In his new role, he will oversee corporate finance, treasury, financial

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 21, 2023 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 6, 2023 UNITED AIRLINES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 6, 2023 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-20997

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Registr

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 19, 2023 UNITED AIRLINES HOL

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 19, 2023 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724 (

United Airlines Announces Second-Quarter Financial Results: Achieves Record-Setting Financial Performance In addition to YOY EPS and pre-tax margin improvement, achieved highest quarterly adjusted EPS1 and second-quarter adjusted pre-tax margin1 in c

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Airlines Announces Second-Quarter Financial Results: Achieves Record-Setting Financial Performance In addition to YOY EPS and pre-tax margin improvement, achieved highest quarterly adjusted EPS1 and second-quarter adjusted pre-tax margin1 in company history Expects full-year 2023 adju

1

Exhibit 99.2 Investor Update1 Issue Date: July 19, 2023 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company" or "UAL"). The information in this Investor Update contains the preliminary financial and operational outlook for the Company for third-quarter and full-year 2023, among other items. Estimated 3Q 2023 Estimat

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 20, 2023 UNITED AIRLINES HOL

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 20, 2023 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724 (

United Airlines, Inc. Flying Together Story May 31, 2023

Exhibit 99.1 United Airlines, Inc. Flying Together Story May 31, 2023 After more than three decades with our company, Gerry Laderman, Executive Vice President and Chief Financial Officer, has announced his plan to retire from United Airlines in 2024. Gerry has had a storied career here and is among our industry’s most transformational leaders of the past quarter century. Gerry will remain in the C

Retirement and Transition Agreement among United Airlines Holdings, Inc. and Gerald Laderman dated May 25, 2023 (filed as Exhibit 10.1 to UAL's Form 8-K filed May 31, 2023, and incorporated herein by reference)

Exhibit 10.1 Retirement and Transition Agreement This Retirement and Transition Agreement (“Agreement”) is entered into on May 25, 2023 (the “Effective Date”) among Gerald Laderman (“Executive”), United Airlines Holdings, Inc. (“UAL”), and United Airlines, Inc. (“Company”), a wholly-owned subsidiary of UAL. 1.            Retirement and Transition. Executive currently serves as Executive Vice Presi

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 24, 2023 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724 (S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 24, 2023 UNITED AIRLINES HOLD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 24, 2023 UNITED AIRLINES HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 (State or other jurisdiction (Commission (IRS Employer

United Airlines Holdings, Inc. 2006 Director Equity Incentive Plan (as amended and restated, effective May 24, 2023) (filed as Exhibit 10.2 to UAL's Form 8-K filed May 30, 2023 and incorporated herein by reference)

Exhibit 10.2 UNITED AIRLINES HOLDINGS, INC. 2006 DIRECTOR EQUITY INCENTIVE PLAN (AS AMENDED AND RESTATED ON MAY 24, 2023) 1. Description. (a) Purpose. The purpose of the United Airlines Holdings, Inc. 2006 Director Equity Incentive Plan (the “DEIP”) is to attract and retain the services of experienced and knowledgeable non-employee directors by providing such directors with greater flexibility in

First Amendment to the United Airlines Holdings, Inc. Amended and Restated 2021 Incentive Compensation Plan

Exhibit 10.1 FIRST AMENDMENT TO UNITED AIRLINES HOLDINGS, INC. AMENDED AND RESTATED 2021 INCENTIVE COMPENSATION PLAN WHEREAS, United Airlines Holdings, Inc. (the “Company”) has heretofore adopted the United Airlines Holdings, Inc. Amended and Restated 2021 Incentive Compensation Plan (the “Plan”) which was approved by stockholders effective May 26, 2021 at the Company’s 2021 Annual Meeting of Stoc

As filed with the Securities and Exchange Commission on May 25, 2023

As filed with the Securities and Exchange Commission on May 25, 2023 Registration No.

As filed with the Securities and Exchange Commission on May 25, 2023

As filed with the Securities and Exchange Commission on May 25, 2023 Registration No.

Calculation of Filing Fee Table

EXHIBIT 107 Calculation of Filing Fee Table FORM S-8 (Form Type) UNITED AIRLINES HOLDINGS, INC.

Calculation of Filing Fee Table

EX-FILING FEES 4 tm2316647d2ex-filingfees.htm EX-FILING FEES EXHIBIT 107 Calculation of Filing Fee Table FORM S-8 (Form Type) UNITED AIRLINES HOLDINGS, INC. (Exact Name of Registrant as Specified in its Charter) Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate

MESA / Mesa Air Group Inc. / United Airlines Holdings, Inc. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 2)* Mesa Air Group, Inc. (Name of Issuer) Common Stock, no par value (Title of Class of Securities) 590479135 (CUSIP Number) Robert S. Rivkin United Airlines Holdings, Inc. 233 South Wacker Drive Chicago, Illinois 60606 (872) 825-4000 (Name, Address and Tele

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Regist

1

Exhibit 99.2 Investor Update1 Issue Date: April 18, 2023 This Investor Update provides guidance and certain other forward-looking statements about United Airlines Holdings, Inc. (the "Company" or "UAL"). The information in this Investor Update contains the preliminary financial and operational outlook for the Company for second-quarter and full-year 2023, among other items. Estimated 2Q 2023 Estim

United Airlines Announces First-Quarter Financial Results: Continues to See Strong Demand for Air Travel Generated record high quarterly operating cash flow of over $3 billion Achieved the lowest mainline flight and seat cancellation rates of any U.S

Exhibit 99.1 News Release United Airlines Worldwide Media Relations 872.825.8640 [email protected] United Airlines Announces First-Quarter Financial Results: Continues to See Strong Demand for Air Travel Generated record high quarterly operating cash flow of over $3 billion Achieved the lowest mainline flight and seat cancellation rates of any U.S. airline despite having the most flights

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 18, 2023 UNITED AIRLINES HO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 18, 2023 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724

ARS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number Exact Name of Registrant as Specified in its Charter, Principal Executive Office Address and Telephone Number State of Incorporation I.

Amended and Restated United Airlines Holdings, Inc. 2006 Director Equity Incentive Plan (incorporated by reference to Appendix C to the Registrant’s Definitive Proxy Statement filed with the Commission on April 13, 2023).

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment N o. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment N o. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 13, 2023 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 001-10323 74-2099724

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 13, 2023 UNITED AIRLINES HOLDINGS, INC. UNITED AIRLINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-06033 36-2675207 Delaware 0

REGISTRATION RIGHTS AGREEMENT

Exhibit 99.3 Execution Version REGISTRATION RIGHTS AGREEMENT This REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of March 6, 2023, is by and among Mesa Air Group, Inc., a Nevada corporation (the “Company”), United Airlines, Inc., a Delaware corporation (the “Investor”), and the other Holders (as defined below) from time to time parties hereto. RECITALS: WHEREAS, on December 27, 2022, t

Execution Version

Exhibit 99.2 Execution Version SUBSCRIPTION AGREEMENT This SUBSCRIPTION AGREEMENT (this “Subscription Agreement”) is entered into on March 6, 2023, by and between Mesa Air Group, Inc., a Nevada corporation (the “Issuer”), and United Airlines, Inc., a Delaware corporation (“Subscriber”). WHEREAS, on December 27, 2022, Issuer, Mesa Airlines, Inc., a Nevada corporation, and United entered into that c

MESA / Mesa Air Group Inc. / United Airlines Holdings, Inc. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 1)* Mesa Air Group, Inc. (Name of Issuer) Common Stock, no par value (Title of Class of Securities) 590479135 (CUSIP Number) Robert S. Rivkin United Airlines Holdings, Inc. 233 South Wacker Drive Chicago, Illinois 60606 (872) 825-4000 (Name, Address and Tele

List of United Airlines Holdings, Inc. and United Airlines, Inc. Subsidiaries

Exhibit 21 United Airlines Holdings, Inc. and United Airlines, Inc. Subsidiaries (as of February 16, 2023) Entity Jurisdiction of Incorporation United Airlines Holdings, Inc. Delaware Wholly-owned subsidiaries*: United Airlines, Inc. Delaware ● Air Wis Services, Inc. Wisconsin ● Air Wisconsin, Inc. Wisconsin ● Domicile Management Services, Inc. ** Delaware ● Air Micronesia, LLC. Delaware ● CAL Car

Amendment No. 3, dated as of December 8, 2022, to the Amended and Restated A350-900 Purchase Agreement, dated as of September 1, 2017, including letter agreements related thereto, between Airbus S.A.S. and United Airlines, Inc.

Exhibit 10.35 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH (I) NOT MATERIAL AND (II) WOULD BE COMPETITIVELY HARMFUL IF PUBLICLY DISCLOSED. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. AMENDMENT NO. 3 TO THE AMENDED AND RESTATED A350-900 PURCHASE AGREEMENT dated as of September 1, 2017 between AIRBUS S.A.S. and UNITED AIRLINES, INC. This Amendment No

Supplemental Agreement No. 2 to Purchase Agreement Number 04815, dated as of November 1, 2018, between The Boeing Company and United Airlines, Inc.

Exhibit 10.94 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH (I) NOT MATERIAL AND (II) WOULD BE COMPETITIVELY HARMFUL IF PUBLICLY DISCLOSED. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. SUPPLEMENTAL AGREEMENT NO. 2 to PURCHASE AGREEMENT NUMBER 04815 between THE BOEING COMPANY and UNITED AIRLINES, INC. relating to BOEING MODEL 787 AIRCRAFT THIS SUPPLEM

Supplemental Agreement No. 11 to Purchase Agreement Number 04761, dated as of November 29, 2022, between The Boeing Company and United Airlines, Inc.

Exhibit 10.90 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH (I) NOT MATERIAL AND (II) WOULD BE COMPETITIVELY HARMFUL IF PUBLICLY DISCLOSED. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. SUPPLEMENTAL AGREEMENT NO. 11 to PURCHASE AGREEMENT NUMBER 04761 between THE BOEING COMPANY and United Airlines, Inc. Relating to Boeing Model 737 MAX Aircraft THIS SU

Supplemental Agreement No. 7 to Purchase Agreement Number 04815, dated as of March 20, 2020, between The Boeing Company and United Airlines, Inc.

Exhibit 10.99 CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH (I) NOT MATERIAL AND (II) WOULD BE COMPETITIVELY HARMFUL IF PUBLICLY DISCLOSED. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS. SUPPLEMENTAL AGREEMENT NO. 7 to PURCHASE AGREEMENT NUMBER 04815 between THE BOEING COMPANY and UNITED AIRLINES, INC. relating to BOEING MODEL 787 AIRCRAFT THIS SUPPLEM