Exhibit 99.1 CONTACT: Investor Relations (214) 792-4415 SOUTHWEST AIRLINES REPORTS FIRST QUARTER EARNINGS OF $76 MILLION; DILUTED EARNINGS PER SHARE OF $.09 DALLAS, TEXAS - April 14, 2005 - Southwest Airlines (NYSE:LUV) today reported first quarter 2005 net income of $76 million, or $.09 per diluted share, compared to $26 million for first quarter 2004, or $.03 per diluted share. These first quarter 2005 results compare favorably to the First Call mean estimate of $.05 per diluted share. Gary C. Kelly, CEO, stated: "Considering the many challenges our industry continues to face, we are grateful to report first quarter 2005 earnings of $76 million. Our rigorous focus on cost reduction and successful fuel hedging program shielded us from record high energy prices and enabled us to report our 56th consecutive quarter of profitability. For first quarter 2005, we were 86 percent hedged, which reduced fuel and oil expense by $155 million. In addition, we recorded $27 million in "other gains" in accordance with Statement of Financial Accounting Standard No. 133 (SFAS 133), 'Accounting for Derivative Instruments and Hedging Activities.' "We are 83 percent hedged for second quarter 2005 with crude oil prices capped at $26 per barrel. Based on current market conditions, we expect our jet fuel costs per gallon for second quarter 2005 to exceed first quarter 2005's 90.3 cents. We remain 85 percent hedged for second half 2005 at $26 per barrel; 65 percent in 2006 at $32 per barrel; over 45 percent in 2007 at $31 per barrel; 30 percent in 2008 at $33 per barrel; and over 25 percent in 2009 at $35 per barrel. "Excluding fuel, our unit costs declined 3.8 percent. This superb performance reflected a tremendous effort by our Employees, and they continue to work hard to improve productivity throughout our Company. Based on recent cost trends, we do not expect second quarter 2005 unit costs, excluding fuel, to significantly exceed first quarter 2005's excellent performance of 6.32 cents. "Our unit revenue improved 1.9 percent as we benefited from significant increases in freight and other revenues and a strong March passenger revenue performance. Following fourth quarter 2004 trends, we started the year with weak revenue yields. March, however, was positively impacted by the timing of the Easter holiday, which led to a record March load factor performance of 73.7 percent. March also benefited from our codeshare with ATA at Chicago Midway (initiated in February), competitive capacity reductions in certain markets, and modest fare increases. Although bookings are satisfactory for May and June, the Easter holiday timing is negatively impacting April traffic and load factors. At this juncture, it appears likely second quarter 2005 load factors will decline relative to last year's record levels, and it is, therefore, difficult to predict whether or not we will have favorable year - -over-year passenger unit revenue comparisons in second quarter 2005. "While we are not immune to the challenging industry revenue environment and glut of capacity, we are well positioned for growth and will continue to explore longterm profitable market opportunities. During first quarter 2005, we exercised seven Boeing 737-700 options for 2006 delivery, bringing our 2006 firm orders to 33, with one 2006 option remaining, for a planned annual available seat mile growth of approximately seven percent. /more <Page> "We look forward to serving Pittsburgh, beginning May 4, 2005, with a total of ten daily nonstop departures to four cities: Philadelphia, Chicago Midway, Las Vegas, and Orlando. We are also excited about our Chicago Midway growth plans and will be at 192 Midway departures by July 5, 2005." Southwest will discuss its first quarter 2005 results on a conference call at 11:30 a.m. Eastern Time today. A live broadcast of the conference call will be available at www.southwest.com/jp/luvhome.shtml?src=IR_earn_041405. Operating Results Total operating revenues for first quarter 2005 increased 12.1 percent to $1.66 billion, compared to $1.48 billion for first quarter 2004. Operating income was $106 million compared to $46 million in first quarter 2004. Revenue passenger miles (RPMs) increased 12.3 percent in first quarter 2005, as compared to a 10.1 percent increase in available seat miles (ASMs), resulting in a 1.2 point increase in load factor to 65.4 percent. The passenger revenue yield per RPM decreased 0.7 percent to 12.03 cents from 12.11 cents in first quarter 2004. Operating revenue yield per ASM (RASM) increased 1.9 percent to 8.22 cents from 8.07 cents in first quarter 2004. Total first quarter 2005 operating expenses were $1.56 billion, an increase of 8.3 percent, compared to $1.44 billion in first quarter 2004. First quarter 2004 operating expenses included $18 million related to the consolidation of the Company's reservation centers. Operating expenses per ASM (CASM) for first quarter 2005 decreased 1.5 percent to 7.70 cents, compared to 7.82 cents in first quarter 2004. Excluding fuel, CASM for first quarter 2005 decreased 3.8 percent to 6.32 cents (compared to 6.57 cents for first quarter 2004), primarily due to lower unit labor, maintenance, and "other" operating expenses. "Other income" was $8 million for first quarter 2005 versus "other expense" of $5 million for first quarter 2004, primarily due to $27 million ($.02 per diluted share after profitsharing and income taxes) in "other gains" recorded in first quarter 2005 in accordance with SFAS 133. Interest expense increased 42.1 percent in first quarter 2005 primarily due to higher debt levels and higher floating interest rates. The first quarter 2005 effective income tax rate of 33.1 percent reflected a $6 million ($.01 per diluted share) reduction in income tax expense, attributable to the favorable resolution of an industry-wide issue regarding the tax treatment of certain aircraft engine maintenance costs. For first quarter 2005, net cash provided by operations was $886 million, which included a $490 million increase in fuel hedge related collateral deposits. Net cash used in investing activities was $172 million for first quarter 2005, which reflects $423 million in capital expenditures plus the remaining $6 million related to assets acquired from ATA Airlines, Inc. These cash expenditures were partially offset by a $257 million increase related to the reclassification of auction-rate securities held at December 31, 2004 to short-term investments. During first quarter 2005, the Company issued $300 million in senior unsecured Notes due 2017 and redeemed $100 million of senior unsecured Notes. The Company completed its previously announced $300 million common stock repurchase program during first quarter 2005. Approximately 3.9 million common shares were repurchased during the quarter, bringing the total shares repurchased during the program to 21 million. The Company ended first quarter 2005 with $1.9 billion cash on hand plus an available unsecured revolving credit line of $575 million. For the ninth consecutive year, Southwest Airlines was recognized by /more <Page> FORTUNE as America's Most Admired Airline and one of America's Most Admired Companies. The Company was also recognized again in HISPANIC magazine's listing of the 2005 Hispanic Corporate 100. Southwest Airlines Cargo was recently named "Airline of the Year" by the Express Delivery & Logistics Association, marking the fifth consecutive year that the Company has been honored for its excellence in air cargo delivery service. This news release contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. All forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from the plans, intentions, and expectations reflected in or suggested by the forward-looking statements. Additional information concerning the factors which could cause actual results to differ materially from the forward-looking statements are contained in the Company's periodic filings with the Securities and Exchange Commission, including without limitation, the Company's Annual Report on Form 10-K for the year ended 2004 and subsequent filings. The Company undertakes no obligation to publicly update or revise any forward-looking statements to reflect events or circumstances that may arise after the date of this press release. /more <Page> <Table> <Caption> SOUTHWEST AIRLINES CO. CONDENSED CONSOLIDATED STATEMENT OF INCOME (in millions except per share amounts) (unaudited) Three months ended March 31, Percent 2005 2004 Change OPERATING REVENUES: Passenger $1,592 $1,428 11.5 Freight 34 25 36.0 Other 37 31 19.4 Total operating revenues 1,663 1,484 12.1 OPERATING EXPENSES: Salaries, wages, and benefits 640 589 8.7 Fuel and oil 279 230 21.3 Maintenance materials and repairs	 101 114 (11.4) Aircraft rentals 43 45 (4.4) Landing fees and other rentals 113 103 9.7 Depreciation and amortization 112 103 8.7 Other operating expenses 269 254 5.9 Total operating expenses 1,557 1,438 8.3 OPERATING INCOME 106 46 130.4 OTHER EXPENSES (INCOME): Interest expense 27 19 42.1 Capitalized interest (9) (10) (10.0) Interest income (7) (4) 75.0 Other (gains) losses, net (19) - n.a. Total other expenses (income) (8) 5 n.a. INCOME BEFORE INCOME TAXES 114 41 178.0 PROVISION FOR INCOME TAXES 38 15 153.3 NET INCOME $76 $26 192.3 NET INCOME PER SHARE: Basic $ .10 $ .03 Diluted $ .09 $ .03 WEIGHTED AVERAGE SHARES OUTSTANDING: Basic 784 785 Diluted 812 817 </Table> /more <Page> <Table> <Caption> SOUTHWEST AIRLINES CO. COMPARATIVE CONSOLIDATED OPERATING STATISTICS (unaudited) Three months ended March 31, 2005 2004 Change Revenue passengers carried 17,474,490 15,995,061 9.2 % Enplaned passengers 19,780,746 18,190,404 8.7 % Revenue passenger miles (RPMs) (000s) 13,238,009 11,792,423 12.3 % Available seat miles (ASMs) (000s) 20,231,599 18,381,592 10.1 % Load factor 65.4% 64.2% 1.2 pts. Average length of passenger haul (miles) 758 737 2.8 % Average aircraft stage length (miles) 596 568 4.9 % Trips flown 249,119 238,469 4.5 % Average passenger fare $91.15 $89.28 2.1 % Passenger revenue yield per RPM (cents) 12.03 12.11 (0.7)% Operating revenue yield per ASM (cents) 8.22 8.07 1.9 % Operating expenses per ASM (cents) 7.70 7.82 (1.5)% Operating expenses per ASM, excluding fuel (cents) 6.32 6.57 (3.8)% Fuel costs per gallon, excluding fuel tax (cents) 90.3 79.6 13.4 % Fuel consumed, in gallons (millions) 307 287 7.0 % Number of Employees at period-end 30,974 31,522 (1.7)% Size of fleet at period-end 424 393 7.9 % </Table> /more <Page> <Table> <Caption> SOUTHWEST AIRLINES CO. CONDENSED CONSOLIDATED BALANCE SHEET (unaudited) March 31, December 31, (in millions) 2005 2004 ASSETS Current assets: Cash and cash equivalents $1,908 $1,048 Short-term investments - 257 Accounts and other receivables 334 248 Inventories of parts and supplies, at cost 128 137 Fuel hedge contracts 790 428 Prepaid expenses and other current assets 75 54 Total current assets 3,235 2,172 Property and equipment, at cost: Flight equipment 10,354 10,037 Ground property and equipment 1,220 1,202 Deposits on flight equipment purchase contracts 646 682 12,220 11,921 Less allowance for depreciation and amortization 3,210 3,198 9,010 8,723 Other assets 1,009 442 $13,254 $11,337 LIABILITIES & STOCKHOLDERS' EQUITY Current liabilities: Accounts payable $471 $420 Accrued liabilities 1,611 1,047 Air traffic liability 724 529 Current maturities of long-term debt 74 146 Total current liabilities 2,880 2,142 Long-term debt less current maturities 1,926 1,700 Deferred income taxes 1,975 1,610 Deferred gains from sale and leaseback of aircraft 148 152 Other deferred liabilities 210 209 Stockholders' equity: Common stock 790 790 Capital in excess of par value 299 299 Retained earnings 4,138 4,089 Accumulated other comprehensive income 972 417 Treasury stock, at cost (84) (71) Total stockholders' equity 6,115 5,524 $13,254 $11,337 </Table> /more <Page> <Table> <Caption> SOUTHWEST AIRLINES CO. CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (unaudited) Three months ended March 31, (in millions) 2005 2004 CASH FLOWS FROM OPERATING ACTIVITIES: Net income $76 $26 Adjustments to reconcile net income to cash provided by operating activities: Depreciation and amortization 112 103 Deferred income taxes 38 16 Amortization of deferred gains on sale and leaseback of aircraft (4) (4) Amortization of scheduled airframe inspections & repairs 11 14 Changes in certain assets and liabilities: Accounts and other receivables (86) (47) Other current assets (12) (15) Accounts payable and accrued liabilities 593 123 Air traffic liability 195 238 Other (37) (37) Net cash provided by operating activities 886 417 CASH FLOWS FROM INVESTING ACTIVITIES: Purchases of property and equipment, net (423) (360) Change in short-term investments 257 39 Acquisition of assets from ATA Airlines, Inc. (6) - Net cash used in investing activities (172) (321) CASH FLOWS FROM FINANCING ACTIVITIES: Issuance of long-term debt 300 29 Proceeds from Employee stock plans 19 13 Payments of long-term debt and capital lease obligations (108) (7) Payments of cash dividends (7) (7) Repurchase of common stock (55) (125) Other, net (3) (1) Net cash provided by (used in) financing activities 146 (98) NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 860 (2) CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 1,048 1,484 CASH AND CASH EQUIVALENTS AT END OF PERIOD $1,908 $1,482 </Table> /more <Page> <Table> <Caption> Southwest Airlines Co. Boeing 737-700 Delivery Schedule As of March 31, 2005 Prior Schedule Current Schedule Firm Options* Firm Options* 2005 34 - 34** - 2006 26 8 33 1 2007 25 29 25 29 2008 6 45 6 45 2009-2012 - 177 - 177 Total 91 259 98 252 *Includes purchase rights ** Includes 12 aircraft delivered through March 31, 2005 </Table> ***