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 11, 2019

UNITED AIRLINES, INC.

(Exact name of registrant as specified in its charter)

(872) 825-4000

Registrant’s telephone number, including area code

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.   ☐

On February 11, 2019, United Airlines, Inc. (the “Company”),Wilmington Trust, National Association, as subordination agent and pass through trustee (the “Trustee”) under certain pass through trusts newly formed by the Company, U.S. Bank National Association, as escrow agent under the Escrow Agreements (as defined below), and Wilmington Trust, National Association, as paying agent (the “Paying Agent”) under the Escrow Agreements, entered into the Note Purchase Agreement, dated as of February 11, 2019 (the “Note Purchase Agreement”). The Note Purchase Agreement provides for the future issuance by the Company of equipment notes (the “Equipment Notes”) in the aggregate principal amount of $1,013,070,000 to finance 15 new Boeing aircraft and 10 new Embraer aircraft scheduled for delivery between November 2018 and July 2019 (collectively, such new aircraft to be financed, the “Aircraft”). Pursuant to the Note Purchase Agreement, upon the financing of each Aircraft, the Trustee will purchase Equipment Notes issued under a trust indenture and mortgage (each, an “Indenture” and, collectively, the “Indentures”) with respect to such Aircraft to be entered into by the Company and Wilmington Trust, National Association, as mortgagee.

Each Indenture contemplates the issuance of Equipment Notes in two series: Series AA, bearing interest at the rate of 4.15% per annum, and Series A, bearing interest at the rate of 4.55% per annum, in aggregate principal amounts (once all the Equipment Notes have been issued) equal to $716,625,000 and $296,445,000, respectively. The Equipment Notes will be purchased by the Trustee, using the proceeds from the sale of Pass Through Certificates, Series 2019-1AA, and Pass Through Certificates, Series 2019-1A (collectively, the “Certificates” and each series of the Certificates, a “Class”), issued by two pass through trusts newly-formed by the Company to facilitate the financing of the Aircraft.

Pending the purchase of the Equipment Notes, the proceeds from the sale of the Certificates of each Class were placed in escrow by the Trustee pursuant to an Escrow and Paying Agent Agreement, dated as of February 11, 2019, among U.S. Bank National Association, as escrow agent, Citigroup Global Markets Inc. and Credit Suisse Securities (USA) LLC, for themselves and on behalf of the several underwriters of the Certificates, and Wilmington Trust, National Association, as Trustee and Paying Agent, corresponding to such Class (each, an “Escrow Agreement” and, collectively, the “Escrow Agreements”). The escrowed funds were deposited with Sumitomo Mitsui Banking Corporation, acting through its New York Branch, under a separate deposit agreement for each Class of Certificates, each dated as of February 11, 2019, between U.S. Bank National Association, as escrow agent, and Sumitomo Mitsui Banking Corporation, acting through its New York Branch, as depositary.

The interest on the Equipment Notes and the escrowed funds is payable semi-annually on each February 25 and August 25, beginning on August 25, 2019. The principal payments on the Equipment Notes are scheduled on February 25 and August 25 of each year, beginning on February 25, 2020. The final payments will be due on August 25, 2031. Maturity of the Equipment Notes may be accelerated upon the occurrence of certain events of default, including failure by the Company (in some cases after notice or the expiration of a grace period, or both) to make payments under the applicable Indenture when due or to comply with certain covenants, as well as certain bankruptcy events involving the Company. The Equipment Notes issued with

respect to each Aircraft will be secured by a lien on such Aircraft and will also be cross-collateralized by the other Aircraft financed pursuant to the Note Purchase Agreement.

The Certificates were registered for offer and sale pursuant to the Securities Act of 1933, as amended (the “Securities Act”), under the Company’s automatic shelf registration statement on Form S-3 (File No. 333-221865) (the “Registration Statement”).

The foregoing description of these agreements and instruments is qualified in its entirety by reference to these agreements and instruments, copies of which are filed herewith as exhibits and are incorporated by reference herein. For a more detailed description of the agreements and instruments entered into by the Company with respect to the Certificates, see the disclosure under the captions “Description of the Certificates”, “Description of the Deposit Agreements”, “Description of the Escrow Agreements”, “Description of the Liquidity Facilities”, “Description of the Intercreditor Agreement”, “Description of the Equipment Notes” and “Underwriting” contained in the Company’s final Prospectus Supplement, dated January 28, 2019 (the “Prospectus Supplement”), to the Prospectus, dated December 1, 2017, filed with the Securities and Exchange Commission on January 29, 2019 pursuant to Rule 424(b) under the Securities Act, which disclosure is hereby incorporated herein by reference.

The information set forth in Item 1.01 above is hereby incorporated by reference in this Item 2.03.

(d)    Exhibits. The documents listed as exhibits below are filed as exhibits with reference to the Registration Statement. The Registration Statement and the final Prospectus Supplement, dated January 28, 2019, to the Prospectus, dated December 1, 2017, relate to the offering of the Certificates.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.