Southwest Airlines Co. (NYSE:LUV) said today that the Company flew 5.9 billion revenue passenger miles (RPMs) in April 2007, a 3.3 percent increase from the 5.7 billion RPMs flown in April 2006. Available seat miles (ASMs) increased 9.6 percent to 8.2 billion from the April 2006 level of 7.5 billion. The load factor for the month was 72.3 percent, compared to 76.7 percent for the same period last year.

For the four months ended April 30, 2007, Southwest flew 22.0 billion RPMs, compared to the 21.0 billion RPMs recorded for the same period of 2006, an increase of 4.8 percent. Available seat miles increased 7.8 percent to 31.9 billion from the 2006 level of 29.6 billion. The year-to-date load factor was 69.1 percent, compared to 71.1 percent for the same period last year.

SOUTHWEST AIRLINES CO.
PRELIMINARY COMPARATIVE TRAFFIC STATISTICS

APRIL

2007 2006 CHANGE

Revenue passengers carried 7,382,832 7,074,152 4.4 %

Enplaned passengers 8,434,977 8,130,739 3.7 %

Revenue passenger miles (000) 5,921,988 5,733,553 3.3 %

Available seat miles (000) 8,189,481 7,470,554 9.6 %

Load factor 72.3% 76.7% (4.4)pts.

Average length of haul 802 810 (1.0)%

Trips flown 95,668 88,618 8.0 %

YEAR-TO-DATE

2007 2006 CHANGE

Revenue passengers carried 27,343,765 26,273,640 4.1 %

Enplaned passengers 31,338,050 30,146,223 4.0 %

Revenue passenger miles (000) 22,031,059 21,014,049 4.8 %

Available seat miles (000) 31,867,856 29,550,012 7.8 %

Load factor 69.1% 71.1% (2.0)pts.

Average length of haul 806 800 0.8 %

Trips flown 372,568 351,067 6.1 %