"Table 10. Top 10 U.S. Airlines, ranked by May 2009 Domestic Scheduled Enplanements",,,,, "Passenger numbers in millions (000,000)",,,,, May 2009 Rank,Carrier,May 2009 Enplaned Passengers,May 2008 Rank,May 2008 Enplaned Passengers,Pct. Change 2008-2009 1,Southwest,8.686,1,9.305,-6.7 2,American,5.659,2,6.492,-12.8 3,Delta,4.695,3,4.881,-3.8 4,United,3.906,4,4.651,-16.0 5,US Airways,3.860,5,4.204,-8.2 6,Northwest,2.813,6,3.574,-21.3 7,Continental,2.727,7,3.086,-11.6 8,AirTran,1.993,8,2.201,-9.5 9,SkyWest,1.665,9,1.701,-2.1 10,JetBlue,1.646,10,1.697,-3.0 "Source: Bureau of Transportation Statistics, T-100 Domestic Market",,,,, Note: Percent changes based on numbers prior to rounding.,,,,, ,,,,,