FILE - In this March 16, 2008 file photo, passengers disembark a Southwest plane in Burbank, Calif. Southwest Airlines Co. posts a surprisingly large loss in the first quarter as traffic fell. AP Photo logo AP Photo 7 months ago

FILE - In this March 16, 2008 file photo, passengers disembark a Southwest plane in Burbank, Calif. Southwest Airlines Co. posts a surprisingly large loss in the first quarter as traffic fell.