"Table 4. Top 10 U.S. Airlines, ranked by June 2007 System* Scheduled Enplanements",,,,, "Passenger numbers in millions (000,000) ",,,,, June 2007 Rank,Carrier,June 2007 Enplaned Passengers,June 2006 Rank,June 2006 Enplaned Passengers,Pct. Change 2006-2007 1,Southwest,9.524,2,8.687,9.6 2,American,8.658,1,8.845,-2.1 3,Delta,6.701,3,6.670,0.5 4,United,6.222,4,6.324,-1.6 5,Northwest,4.770,5,4.904,-2.7 6,Continental,4.432,6,4.199,5.5 7,US Airways,3.272,7,3.233,1.2 8,AirTran,2.245,9,1.865,20.4 9,Sky West,1.980,10,1.740,13.8 10,America West,1.881,8,1.882,-0.1 "Source: Bureau of Transportation Statistics, T-100 Market",,,,, * System equals domestic plus international,,,,, Note: Percent changes based on numbers prior to rounding.,,,,,