U.S. travelers flying with United Airlines will have to check in to domestic flights a little earlier starting next week.

U.S. travelers flying with United Airlines will have to check in to domestic flights a little earlier starting next week.

NEW YORK — Stragglers beware: U.S. travelers flying with United Airlines will have to check ... But it's still an important step since boarding passes are issued once check-ins are completed.

It's the latest big change to come to airline travel. Starting Wednesday, Southwest Airlines will begin charging customers ...

United Is Narrowing Its Check-In Window for US Flights. Here's How It Compares to Other Airlines NEW YORK ... it's still an important step since boarding passes are issued once check-ins are ...