Waiting too long could cost you your seat—and your sanity.

NEW YORK (AP) — Stragglers beware: U.S. travelers flying with United Airlines will have to check in to domestic flights a little earlier starting next week. That is, if they're customers only taking ...

Here are eight ways to find cheap flight tickets without spending hours booking travel or settling for economy class seats.

CHICAGO -- United Airlines is changing its check-in cutoff time ahead of the busy summer travel season. The Chicago-based airline will now require check-ins for domestic flights 45 minutes before ...

United Airlines passengers are facing a big change beginning Tuesday as the airline shifts how early fliers must check-in for trips. If passengers don't abide by the new rules, United says, their ...