"Table 9. Top 10 U.S. Airlines, ranked by January-April 2007 Domestic Scheduled Enplanements",,,,, "Passenger numbers in millions (000,000)",,,,, Jan-Apr 2007 Rank,Carrier,Jan-Apr 2007 Enplaned Passengers,Jan-Apr 2006 Rank,Jan-Apr 2006 Enplaned Passengers,Pct. Change 2006-2007 1,Southwest,31.338,1,30.146,4.0 2,American,24.592,2,25.230,-2.5 3,Delta,19.816,3,21.355,-7.2 4,United,18.430,4,18.242,1.0 5,Northwest,14.157,5,14.026,0.9 6,Continental,11.978,6,11.598,3.3 7,US Airways,10.796,7,10.556,2.3 8,AirTran,7.033,9,6.217,13.1 9,JetBlue,6.774,10,5.808,16.6 10,SkyWest,6.514,11,5.799,12.3 "Source: Bureau of Transportation Statistics, T-100 Domestic Market",,,,, Note: Percent changes based on numbers prior to rounding.,,,,, ,,,,,