I fly into three of these airports which are on the top ten a few times a year (Miami, Vegas, and Chicago(ORD)) and agree that Chicago should be near the top (They have it ranked 2nd worse right below Detroit). I don’t think I’ve ever had a flight that wasn’t delayed leaving O’Hare.
This table ranks the 47 largest hub and nonhub airports according to a combination of on-time performance and average load factor. The airports with the highest Airport Misery Index have the worst combination of late and crowded flights.
On-time performance data are year to date through April 2007. Load factor data are year to date through February 2007.