"Table 3. Top 10 U.S. Airlines, ranked by January-June 2007 System* Scheduled Enplanements",,,,, "Passenger numbers in millions (000,000) ",,,,, Jan-Jun 2007 Rank,Carrier,Jan-Jun 2007 Enplaned Passengers,Jan-Jun 2006 Rank,Jan-Jun 2006 Enplaned Passengers,Pct. Change 2006-2007 1,Southwest,49.792,2,47.322,5.2 2,American,48.619,1,49.541,-1.9 3,Delta,36.067,3,36.895,-2.2 4,United,34.533,4,34.481,0.2 5,Northwest,26.993,5,26.894,0.4 6,Continental,24.381,6,23.207,5.1 7,US Airways,18.784,7,18.535,1.3 8,AirTran,11.375,9,9.890,15.0 9,Sky West,10.751,10,9.460,13.6 10,JetBlue,10.611,13,8.831,20.2 "Source: Bureau of Transportation Statistics, T-100 Market",,,,, * System equals domestic plus international,,,,, Note: Percent changes based on numbers prior to rounding.,,,,,