United Airlines online check-in: when it opens and closes
United Airlines online check-in opens 24 hours before departure and closes 45 minutes before departure. The times change with the route, airport or fare, as the table below shows.
- Online check-in opens
- 24 hours before departure
- Online check-in closes
- 45 minutes before departure
- Where to check in
- United Airlines website or mobile app
- Last verified
Open United Airlines online check-in (united.com)
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When does United Airlines online check-in open?
United Airlines online check-in opens 24 hours before the scheduled departure time.
When does United Airlines online check-in close?
United Airlines online check-in closes 45 minutes before the scheduled departure time.
United Airlines check-in times by route and fare
| Applies to | Opens | Closes | Note |
|---|---|---|---|
| Domestic | 24 hours before | 45 minutes before | |
| International | 24 hours before | 60 minutes before |
What United Airlines says
These times come from pages published by United Airlines, last checked on November 5, 2026. Airlines change their rules, so confirm on the airline's page before you travel.
-
starting 24 hours before your scheduled departure
Source: united.com
-
at least 45 minutes before departure
Source: united.com
See the check-in time for your own flight
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