The percentage of airline flights in September that arrived within 15 minutes of schedule, according to the U.S. Transportation Department. In parenthesis is the carrier's ranking the previous month.

1. Hawaiian Airlines, 94.1 percent (1)

2. Alaska Airlines, 90.0 percent (2)

3. Southwest Airlines, 89.1 percent (6)

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4. Frontier Airlines, 89.1 percent (4)

5. JetBlue, 88.7 percent (15)

6. Continental Airlines, 88.4 percent (7)

7. US Airways, 87.9 percent (8)

8. United Airlines, 87.9 percent (9)

9. SkyWest Airlines, 87.5 percent (3)

10. ExpressJet Airlines, 87.3 percent (5)

11. Mesa Airlines, 87.0 percent (11)

12. Pinnacle Airlines, 86.6 percent (12)

Average of all airlines, 86.2 percent

13. American Airlines, 86.0 percent (14)

14. American Eagle, 84.8 percent (10)

15. Northwest Airlines, 84.5 percent (16)

16. AirTran, 83.4 (17)

17. Delta Air Lines, 82.2 percent (13)

18 Comair, 80.5 percent (19)

19. Atlantic Southeast, 72.2 percent (18)

Source: DOT's Bureau of Transportation Statistics