That honor goes to JFK's Terminal 3 in New York. Terminals at all three of New York's airports made the worst list.
Midway is the only other terminal at a U.S. airport on the worst list.
Frommers.com says the biggest problem is customer care. The travel guide compiled the best and worst choices based on cleanliness, on-time departures and the ease of getting to and from a city center.
