"Table 3. Top 10 Airlines, ranked by April 2004 Domestic Enplanements ",,,,, Rank,Airline Name,April 2003,March 2004,April 2004,April 2003 Rank 1,Southwest Airlines,"6,137,024","7,089,890","7,120,432",2 2,Delta Airlines,"6,160,049","6,947,233","6,711,378",1 3,American Airlines,"5,907,580","6,425,910","6,211,663",3 4,United Airlines,"4,537,823","5,029,770","5,022,073",4 5,Northwest Airlines,"3,500,259","4,021,053","3,834,684",5 6,US Airways,"3,227,126","3,335,691","3,413,018",6 7,Continental Airlines,"2,521,969","2,762,806","2,751,538",7 8,America West Airlines,"1,593,759","1,710,680","1,648,376",8 9,American Eagle Airlines,"933,073","1,166,685","1,170,293",11 10,AirTran Airways,"955,332","1,142,815","1,143,034",10 Source: T-100 Domestic Market,,,,,