United Airlines online check-in
With 1Checkin you forward your United Airlines (UA) booking once and we check you in automatically the moment online check-in opens, then send you the boarding pass.
Since 2017, 1Checkin has completed more than 1,000 automatic check-ins on United Airlines flights.
When does United Airlines check-in open?
Online check-in for United Airlines opens 24 hours before departure and closes 60 minutes before departure.
Seat selection on United Airlines
United Airlines lets you choose a seat for free at online check-in. 1Checkin picks a seat that matches your saved preference (window, aisle, front of the cabin).
1Checkin has checked passengers in on United Airlines flights departing from Atlanta (ATL), Boston (BOS), Brussels (BRU), Paris (CDG), Cleveland (CLE), Cape Town (CPT), Cancun (CUN) and Washington (DCA), plus 30 more airports.
United Airlines check-in FAQ
How does automatic check-in for United Airlines work?
Forward your United Airlines booking confirmation to 1Checkin or add the booking in the app. We check you in as soon as online check-in opens and send the boarding pass to your e-mail.
When does United Airlines online check-in open?
Online check-in for United Airlines opens 24 hours before departure and closes 60 minutes before departure.
Can I choose my seat on United Airlines?
United Airlines lets you choose a seat for free at online check-in. 1Checkin picks a seat that matches your saved preference (window, aisle, front of the cabin).
How it works
- Forward your booking confirmation to 1Checkin, or add the booking reference in the app.
- 1Checkin checks you in on United Airlines the second online check-in opens.
- Your boarding pass lands in the app, ready for the airport, even offline.