Table 12.  Airline Domestic Unit Costs (Cents per Mile),,,,,,,
Regionals,,,,,,,
Ranked by 4th Quarter 2005 Domestic Unit Costs ,,,,,,,
(Domestic Operating Expenses per Available Seat Mile in cents) ,,,,,,,
4Q 2005 Rank,Regional Carriers,4th Quarter 2004,1st Quarter 2005 ,2nd Quarter 2005 ,3rd Quarter 2005 ,4th Quarter 2005 ,4th Quarter Operating Expenses $(Millions)
1,Comair,13.3,13.8,14.1,14.7,15.4,334
2,American Eagle,14.6,14.8,14.2,14.6,15.4,421
3,Sky West,13.8,13.7,13.3,13.7,14.3,379
4,Pinnacle,13.1,13.5,12.8,16.2,13.9,197
5,Atlantic Southeast,13.3,13.7,12.3,13.3,13.8,278
6,ExpressJet,12.5,12.7,11.8,11.7,12.1,337
7,Mesa,10.9,10.6,10.5,10.7,11.4,265
,Seven-Carrier Total,13.1,13.3,12.7,13.4,13.7,"2,211"
Source: Bureau of Transportation Statistics; Form 41; Schedule P1.2.  T100; T2 Data.,,,,,,,