United Airlines is implementing a new check-in policy, and unless you are paying attention, it could throw a major wrench in your travel plans.

Starting June 3, United Airlines will require domestic travelers to check in at least 45 minutes before departure — syncing the carrier up with Delta and American, who have already done the same.

Ireland's Ryanair allows online check-in up to two hours before a ... If you're flying with American Airlines within the U.S., the deadline for checking in and checking a bag before a flight ...

Ireland’s Ryanair allows online check-in up to two hours before a ... If you’re flying with American Airlines within the U.S., the deadline for checking in and checking a bag before a flight ...

Ireland’s Ryanair allows online check-in up to two hours before a ... If you're flying with American Airlines within the U.S., the deadline for checking in and checking a bag before a flight ...