Table 10.  Airline Domestic Unit Costs (Cents per Mile),,,,,,,
Network Carriers,,,,,,,
Ranked by 1st Quarter 2006 Domestic Unit Costs ,,,,,,,
(Domestic Operating Expenses per Available Seat Mile in cents),,,,,,,
1Q 2006 Rank,Network Carriers,1st Quarter 2005 ,2nd Quarter 2005 ,3rd Quarter 2005 ,4th Quarter 2005 ,1st Quarter 2006 ,1st Quarter Operating Expenses $(Millions)
1,US Airways,14.8,15.3,16.3,17.8,18.8,"1,563.5"
2,Continental,15.8,15.7,15.9,16.7,16.6,"2,100.6"
3,Northwest,15.1,15.7,16.7,17.1,15.8,"1,933.2"
4,Delta,13.7,13.5,13.7,15.1,15.8,"3,272.1"
5,United,12.2,13.8,13.8,14.5,15.0,"3,111.2"
6,Alaska,11.4,11.3,10.6,12.2,13.9,674.1
7,American,11.3,11.5,12.1,13.2,12.5,"3,443.3"
,Seven-Carrier Total,13.2,13.6,14.0,15.0,15.0,"16,098.0"
Source: Bureau of Transportation Statistics; Form 41; Schedule P1.2.  T100; T2 Data,,,,,,,