1 EXHIBIT 1.1 SOUTHWEST AIRLINES CO. DEBT SECURITIES TERMS AGREEMENT February 25, 1997 To: Southwest Airlines Co. 2702 Love Field Drive Dallas, Texas 75235 Dear Sirs: We understand that Southwest Airlines Co., a Texas corporation (the "Company"), proposes to issue and sell $100,000,000 aggregate principal amount of debt securities. On behalf of the Underwriters named in Schedule I hereto (the "Underwriters"), and subject to the terms and conditions set forth herein or incorporated by reference herein, we hereby offer to purchase such Securities. The Securities to be purchased by the Underwriters, which are to be issued under an Indenture dated as of February 25, 1997 between the Company and U.S. Trust Company of Texas, N.A., as Trustee, shall have the following terms: Title: 73/8% Debentures Due 2027 Principal amount to be issued: $100,000,000 Date of maturity: March 1, 2027 Interest rate: 73/8% per annum Interest payment dates: March 1 and September 1 of each year, beginning September 1, 1997, in immediately available funds Public offering price: 99.639%, plus accrued interest from Feb- ruary 28, 1997 Purchase price: 98.764%, plus accrued interest from February 28, 1997 (payable in same-day funds) Redemption provisions: Redeemable, at the option of the Company, in whole at any time or in part from time to time, at a redemption price equal to the greater of (i) 100% of their principal amount and (ii) the sum of the present values of the remaining scheduled payments of principal and interest 2 thereon discounted to the date of redemption, on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months), at the Treasury Rate (as defined) plus 20 basis points, plus accrued interest thereon to the date of redemption. Defeasance: Yes Delayed Delivery Contracts: None Book-entry arrangements: Authorized Underwriters' counsel: Vinson & Elkins L.L.P., Houston, Texas Closing date and location: February 28, 1997, at the offices of the Company, 2702 Love Field Drive, Dallas, Texas Current ratings: Moody's Investor Service -- A3 Standard & Poor's -- A- Duff & Phelps -- A- All of the provisions contained in the document entitled "Southwest Airlines Co. Debt Securities, Underwriting Agreement--Basic Provisions," dated as of September 1, 1992, a copy of which is attached hereto as Annex A, are herein incorporated by reference in their entirety, except to the extent inconsistent herewith, and shall be deemed to be a part of this Terms Agreement to the same extent as if such provisions had been set forth in full herein. Terms defined in such document are used herein as therein defined, except that the references therein to the Indenture dated as of June 21, 1991 shall be deemed to be the Indenture as defined in this Terms Agreement and the registration statement on Form S-3 (No. 33-50930) referred to therein shall be deemed to be the Company's registration statement on Form S-3 (No. 33-59113). The Underwriters severally agree, subject to the terms and provisions of this Terms Agreement, including the terms and provisions incorporated by reference herein, to purchase from the Company the respective principal amounts of Securities set forth opposite their names in Schedule I hereto. The Company and the Underwriters acknowledge that Vinson & Elkins L.L.P., which is acting as counsel to the Underwriters in connection with the offer and sale of the Securities, also acts as counsel from time to time to the Company in connection with unrelated matters. The Company and the Underwriters consent to such firm's so acting as counsel to the Underwriters and as counsel to the Company. -2- 3 Any notice by the Company to the Underwriters pursuant to this Terms Agreement shall be in writing and shall be deemed to have been duly given if mailed or transmitted by any standard form of telecommunication addressed to the Underwriters c/o Lehman Brothers Inc., 3 World Financial Center, 200 Vesey Street, New York, New York 10285. Please accept this offer by signing a copy of this Terms Agreement in the space set forth below and returning the signed copy to us. LEHMAN BROTHERS INC. MERRILL LYNCH & CO. Merrill Lynch, Pierce, Fenner & Smith Incorporated SALOMON BROTHERS INC By: Lehman Brothers Inc. By: /s/ Peter Wexler ------------------------------------------- Title: Managing Director ---------------------------------------- Accepted: SOUTHWEST AIRLINES CO. By: /s/ Gary C. Kelly --------------------------- Title: Vice President & CEO --------------------------- -3- 4 SCHEDULE I PRINCIPAL UNDERWRITER AMOUNT ----------- ------ Lehman Brothers Inc..................................................................... $ 33,400,000 Merrill Lynch, Pierce, Fenner & Smith Incorporated...................................... 33,300,000 Salomon Brothers Inc.................................................................... 33,300,000 ------------ Total........................................................................... $100,000,000 ============ -4-