"Table 10. Top 10 U.S. Airlines, ranked by March 2006 Domestic Enplanements",,,,, "Passenger numbers in millions (000,000)",,,,, Mar. 2006 Rank,Carrier,Mar. 2006 Enplanements,Mar. 2005 Rank,Mar. 2005 Enplanements, ,,,,, 1,Southwest Airlines,8.3,1,7.7, 2,American Airlines,6.9,3,6.8, 3,Delta Air Lines,6.0,2,7.5, 4,United Airlines,5.0,4,4.7, 5,Northwest Airlines,4.0,5,4.3, 6,Continental Airlines,3.2,7,3.0, 7,U.S. Airways,3.0,6,3.8, 8,AirTran Airways,1.8,10,1.4, 9,America West Airlines,1.7,8,1.8, 10,SkyWest Airlines,1.6,11,1.4, "Source: Bureau of Transportation Statistics, T-100 Domestic Market",,,,, Note: Percentage changes based on numbers prior to rounding,,,,,