UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Seccurities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): April 20, 2006 Southwest Airlines Co. ----------------------------------------------------- (Exact name of registrant as specified in its charter) Texas 1-7259 74-1563240 - ---------------------------- ------------ ------------------- (State or other jurisdiction (Commission (I.R.S. Employer of incorporation) File Number) Identification No.) P. O. Box 36611, Dallas, Texas 75235-1611 - ---------------------------------------- ---------- (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (214) 792-4000 Not Applicable ----------------------------------------------------------- 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: [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Item 1.01 Entry Into A Material Definitive Agreement. On April 20, 2006, Southwest Airlines Co. (Southwest) and The Boeing Company entered into an agreement providing for the exercise by Southwest of options to purchase seventy-nine (79) Boeing 737-700 Aircraft for delivery in 2007 through 2012. In addition, Southwest converted 115 "Rollover Option Aircraft" to "Option Aircraft", with delivery positions in 2008 through 2012. Southwest's remaining 54 Rollover Option Aircraft (to be referred to as Purchase Right Aircraft in the future), may be delivered through December 31, 2014, if Southwest elects to purchase such aircraft. As a result of this transaction, Southwest has firm orders and options to purchase Boeing 737-700 aircraft as follows: Firm Orders and Options to Purchase Boeing 737-700 Aircraft <Table> <Caption> Delivery Year Firm Orders Options Purchase Rights 2006 33* 2007 36 2008 30 6 2009 18 18 2010 10 32 2011 10 30 2012 10 30 2008-2014 54 Totals 147 116 54 </Table> *Seven of these Aircraft had been delivered as of April 20, 2006. Item 2.02 Results of Operations and Financial Condition. On April 20, 2006, the Registrant issued a press release announcing First Quarter 2006 financial results. The press release is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The information furnished in Item 2.02 shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, regardless of any general incorporation language in such filing, except as shall be expressly set forth by specific reference in such filing. 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. Southwest Airlines Co. April 20, 2006 By: /s/ Laura Wright Name: Laura Wright Title: Senior Vice President-Finance Chief Financial Officer Page 2 Exhibit Index <Table> <Caption> Exhibit No. Description 99.1 Registrant's First Quarter 2006 Earnings Release. </Table> Page 3