United Airlines Check-In Times & Options
Check in from 24 hours before departure. United enforces a 45-minute domestic bag-drop cut-off and closes boarding 15 minutes before departure.
- Online check-in opens
- 24 hours before departure
- Bag drop — domestic
- 45 minutes before departure
- Bag drop — international
- 60 minutes before departure
Compiled August 20, 2026 — not yet confirmed against the official pageSource: United Airlines