1. Colgan Air/Continental Connection, Pittsburgh

Flights departing excessively late (%): 29.5

Average delay (minutes): 93

2. SkyWest Airlines/Midwest Connect, Newark

Flights departing excessively late (%): 24.9

Average delay (minutes): 92

3. Spirit Airlines, New York La Guardia

Flights departing excessively late (%): 22.9

Average delay (minutes): 64

4. Champlain Enterprises/Continental Connection, Washington Dulles

Flights departing excessively late (%): 22.6

Average delay (minutes): 85

5. Colgan Air/Continental Connection, Newark

Flights departing excessively late (%): 21.8

Average delay (minutes): 75

6. Continental Airlines. Chicago O’Hare

Flights departing excessively late (%): 20.7

Average delay (minutes): 80

7. Champlain Enterprises/Continental Connection, Newark

Flights departing excessively late (%): 19.8

Average delay (minutes): 75

8. Trans States Airlines, Inc./United Express, Newark

Flights departing excessively late (%): 18.5

Average delay (minutes): 82

9. Expressjet Airlines/Continental Express, Detroit

Flights departing excessively late (%): 18.2

Average delay (minutes): 83

10. Colgan Air/US Airways Express, New York La Guardia

Flights departing excessively late (%): 18

Average delay (minutes): 73

* An excessive delay is 45 minutes or longer. Figures are for airlines averaging 20 or more weekly flights out of major domestic airports and reflect the period between May 1, 2008, and May 1, 2009. Data courtesy of FlightStats.