Travelers, panicked by scenes of never-ending lines at U.S. airport security checkpoints and frustrating tales of missed flights, are now showing up way before their departures.
Some airports, where wait times have been manageable, say those early birds are only adding to the misery, and in some cases, causing other passengers to get to their gate too late.
John Glenn International Airport in Columbus, Ohio, is warning passengers against arriving hours in advance, even creating a chart showing when to show up: "90 minutes before departure is all you need".