System Total Operating Revenue per Equivalent Seat Mile (TRESM)
STAGE LENGTH ADJUSTED
Cents per Equivalent Seat Mile
		1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
American		11.62	11.46	11.84	12.03	11.39	12.56	11.35	9.92	11.39	11.74	12.73	13.94	14.38	15.36
Continental		8.94	10.05	10.68	11.02	11.03	12.11	10.91	10.69	10.83	13.63	14.80	15.92	16.36	17.52
Delta		9.18	9.46	9.69	9.80	9.84	10.05	9.00	9.07	11.46	11.36	11.92	14.36	16.03	17.49
Northwest		10.21	10.33	10.26	9.47	9.78	10.47	9.60	9.56	9.85	11.62	12.76	13.91	14.15	16.38
United		10.49	11.11	11.36	11.15	11.17	12.20	10.86	10.53	10.97	12.06	14.01	15.15	15.83	16.68
US Airways		9.76	10.97	11.88	12.19	11.62	11.40	10.34	10.33	11.43	11.37	11.56	14.11	14.63	15.61
America West		7.27	7.44	7.52	7.76	8.04	8.26	7.42	7.43	7.99	8.29	10.97	-	-	-
--sub Network		10.12	10.52	10.83	10.81	10.69	11.39	10.30	9.89	10.95	11.79	12.89	14.52	15.22	16.46
Southwest		5.39	5.74	5.92	6.10	6.33	6.84	6.23	5.97	6.16	6.32	6.73	7.42	7.51	8.03
jetBlue		-	-	-	-	-	7.20	7.65	8.43	8.22	7.58	8.12	8.64	9.00	10.52
AirTran		-	-	6.80	6.25	6.76	7.97	7.58	6.63	7.01	6.74	7.41	7.72	8.11	8.70
Frontier		5.69	7.02	6.75	8.19	8.49	10.55	9.08	8.42	8.11	8.78	9.83	9.85	9.76	10.27
Allegiant		-	-	-	-	-	-	-	-	-	8.55	8.29	8.02	8.47	10.04
-- sub LCC		5.40	5.76	6.04	6.26	6.50	7.11	6.54	6.30	6.56	6.75	7.28	7.86	8.07	8.78
Alaska		7.81	8.04	8.56	8.56	8.87	9.34	9.00	8.78	9.00	9.30	9.98	10.65	11.70	12.42
Hawaiian		4.57	4.75	4.90	4.96	8.39	5.62	5.65	6.95	7.58	8.39	8.36	8.40	8.38	9.54
Midwest		11.39	12.42	12.40	12.59	12.24	12.17	11.06	10.09	9.42	8.61	9.00	10.20	11.37	14.58
-- sub Other		7.50	7.76	8.14	8.22	9.15	8.78	8.47	8.68	8.80	9.16	9.60	10.21	10.98	12.13
Base Length of Haul		838	869	886	908	930	934	954	965	1,003	1,038	1,060	1,085	1,092	1,118
Note:   Stage Length Adjustment formula:  ((observed length of haul/base length of haul [15 carrier average])^.5) times respective carrier unit cost.
Data Source:  US DOT Form 41 via BTS, Schedules P12 & T2.