Persistent fog, cross-winds, and heavy snow trap aircraft on the ramp so often that these five hubs routinely log the steepest weather-delay tallies.

News that air traffic controllers directing planes into New Jersey’s busiest airport twice lost both their radar and radios is alarming.

Military air traffic controllers lost contact with an Army helicopter for about 20 seconds as it neared the Pentagon on the flight that caused two commercial jets to abort their ...