"Table 3. Top 10 Airlines, Ranked by January 2006 Domestic Enplanements",,,,, "Passenger numbers in millions (000,000)",,,,, Jan. 2006 Rank,Carrier,Jan. 2006,Jan. 2005 Rank,Jan. 2005, ,,,,, 1,Southwest,6.863,2,6.04, 2,American,6.071,3,5.784, 3,Delta,5.181,1,6.186, 4,United,4.288,4,4.231, 5,Northwest,3.156,5,3.381, 6,Continental,2.709,7,2.392, 7,US Airways,2.346,6,2.797, 8,America West,1.569,8,1.571, 9,JetBlue,1.355,12,1.054, 10,SkyWest,1.341,10,1.121, Source: T-100 Domestic Market,,,,,