"Table 4. Top 10 U.S. Airlines, ranked by September 2007 System* Scheduled Enplanements",,,,, "Passenger numbers in millions (000,000)",,,,, Sept 2007 Rank,Carrier,Sept 2007 Enplaned Passengers,Sept 2006 Rank,Sept 2006 Enplaned Passengers,Pct. Change 2006-2007 1,Southwest,7.979,1,7.459,7.0 2,American,7.519,2,7.262,3.5 3,Delta,5.580,3,5.432,2.7 4,United,5.257,4,5.418,-3.0 5,Northwest,4.162,5,4.319,-3.6 6,Continental,3.607,6,3.425,5.3 7,US Airways,3.038,7,2.609,16.4 8,Sky West,1.810,8,1.597,13.3 9,AirTran,1.728,11,1.377,25.5 10,JetBlue,1.512,10,1.486,1.8 "Source: Bureau of Transportation Statistics, T-100 Market",,,,, * System equals domestic plus international,,,,, Note: Percent changes based on numbers prior to rounding.,,,,,