Rankings:
JetBlue Airways
Midwest
Southwest
Frontier
Hawaiian
Aloha
Alaska
Spirit
Continental
Airtran
Delta
American
ATA
NWA
American Eagle
United
America West
US Airways
JetBlue Airways
Midwest
Southwest
Frontier
Hawaiian
Aloha
Alaska
Spirit
Continental
Airtran
Delta
American
ATA
NWA
American Eagle
United
America West
US Airways