Charles Rex Arbogast/AP Images
#10 (tie) Chicago Midway (MDW)
Flights delayed: 25%*
An improved Midway cut 3% of its delays over last year. A similar jump next year and it may disappear from this list.
*Figures indicate the percentage of all flights that departed more than 15 minutes behind schedule from January 1, 2008, to August 31, 2008, and are from the U.S. Department of Transportation.
America's Best and Worst Airports 2008