"Table 6. Top 10 Airlines, ranked by December 2005 Domestic Enplanements",,,,, Dec 2005 Rank,Carrier,Dec 2005 Passengers,Dec 2004 Rank,Dec 2004 Passengers, ,,,,, 1,Southwest,"7,260,803",1,"6,628,179", 2,American,"6,418,518",3,"6,122,148", 3,Delta,"5,516,023",2,"6,596,761", 4,United,"4,618,922",4,"4,783,477", 5,Northwest,"3,552,911",5,"3,843,788", 6,Continental,"2,933,328",7,"2,692,307", 7,US Airways,"2,466,772",6,"3,081,361", 8,America West,"1,683,637",8,"1,675,469", 9,AirTran,"1,495,076",11,"1,212,609", 10,American Eagle,"1,414,947",9,"1,245,386", "Source: Bureau of Transportation Statistics, T-100 Domestic Market",,,,,