"Table 4. Top 10 U.S. Airlines, ranked by March 2007 System* Scheduled Enplanements",,,,, "Passenger numbers in millions (000,000) ",,,,, Mar 2007 Rank,Carrier,Mar 2007 Enplaned Passengers,Mar 2006 Rank,Mar 2006 Enplaned Passengers,Pct. Change 2006-2007 1,Southwest,8.631,2,8.337,3.5 2,American,8.581,1,8.719,-1.6 3,Delta,6.573,3,6.791,-3.2 4,United,6.132,4,6.050,-1.3 5,Northwest,4.860,5,4.841,0.4 6,Continental,4.265,6,4.145,2.9 7,US Airways,3.328,7,3.400,-2.1 8,Airtran,2.014,9,1.775,13.5 9,JetBlue,1.930,11,1.625,18.8 10,America West,1.888,8,1.860,1.5 "Source: Bureau of Transportation Statistics, T-100 Market",,,,, * System equals domestic plus international,,,,, Note: Percent changes based on numbers prior to rounding.,,,,, ,,,,,