Add Yahoo as a preferred source to see more of our stories on Google. Passengers check in at O'Hare International Airport in Chicago. (Scott Olson/Getty Images) (Scott Olson via Getty Images) There ...

Checking in for your flight might seem like a mindless step, but when you do it can seriously impact your travel experience. These days, most airlines let you check in online starting 24 hours before ...

HOUSTON — If you're taking a flight on United Airlines soon, you'll want to get to the airport a little earlier than usual after the airline's new check-in policy went into effect on Tuesday.

A major airline is changing its check-in policy to require earlier passenger arrivals. Starting June 3, United Airlines will require customers without checked bags to check in for domestic flights at ...