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 ...

United Airlines will implement a stricter check-in deadline, which could impact thousands of passengers starting June 3. Under the new policy, passengers on domestic flights with or without checked ...

If you're flying with United Airlines soon, make sure you get there with plenty of time to spare — the airline just updated its check-in process. Here's what to know. Starting in June, domestic ...