2007 CASM numbers, as reported by Delta:
DC9-30: 11.1
DC9-40: 9.5
DC9-50: 8.8
A319/320: 6.1
MD88: 7.5
737-800: 5.6
MD90: 6.9
757-NWA: 6.0
757-DAL: 5.4
757-300 (NWA): 4.2 (most efficient airplane on the planet, BTW)
767-300: 5.6
767-400: 4.5
A330: 4.3
B777: 5.9
B747-200: 8.9
Crj-200-CA: 13.4
Crj-200-SW: 10.0
Crj-700-CA: 9.6
Crj-700-SW: 7.9
CRJ-900-SW: 7.3
Don't know why the MD-90 is so high. Figure it must be a result of having such a small fleet. Just a couple of expense items could throw the numbers. Also, since the next question everyone asks is about cap ex, these numbers do not include acquisition costs.
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My forecast was the high cost outliers would get parked. So far, that's been correct, even to the order which the cuts have been made. I'll do updated numbers sometime in January when I get bored and the weather stinks.