DAL: Material agreement · Other company developments

Item 1.01 Entry into a Material Definitive Agreement. On November 6, 2026, Delta Air Lines, Inc. (“Delta,” “we,” “us” or “our”) completed a public offering of $500,000,000 in aggregate principal amount of our 5.500% Notes due 2029 (the “Notes”). The Notes were registered under the Securities Act of 1933, as amended (the “Securities Act”), pursuant to an automatic shelf registration statement on Form S-3 (File No. 333-297387) (the “Registration Statement”), filed with the Securities and Exchange Commission (the “Commission”) on July 10, 2026. The material terms of the Notes are described in the prospectus supplement, dated November 4, 2026, filed with the Commission on November 5, 2026 pursuant to Rule 424(b) under the Securities Act, which relates to the offer and sale of the Notes and supplements the prospectus, dated July 10, 2026, that constitutes a part of the Registration Statement. The Notes were issued under an indenture, dated as of March 6, 2017 (the “Base Indenture”), as supplemented by that certain Seventh Supplemental Indenture, dated November 6, 2026 (the “Supplemental Indenture” and, together with the Base Indenture, the “Indenture”), each between Delta and U.S. Bank Trust Company, National Association (as successor in interest to U.S. Bank National Association), as trustee. The Base Indenture was incorporated by reference as Exhibit 4.1 to the Registration Statement and is incorporated herein by reference. The Supplemental Indenture is filed herewith as Exhibit 4.1 and incorporated herein by reference. The Notes are our direct, unsecured and unsubordinated obligations. The Notes rank pari passu , or equal in right of payment, with all of our other unsubordinated indebtedness and senior in right of payment to all of our future subordinated debt. The Notes