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United Check-In – Complete Guide
United check-in is designed to offer flexibility and convenience to all travelers. Passengers can begin the check-in process up to 24 hours before their scheduled departure through multiple channels, including the United Airlines website, the United mobile app, and self-service airport kiosks. Whether you're traveling domestically or internationally, United’s streamlined check-in options make it easy to prepare for your flight.
Online & Mobile Check-In
United’s online and mobile check-in allows passengers to check in from the comfort of their home or on the go. Available 24 hours before departure, this option lets you:
- Choose or change your seat
- Add checked baggage and pay fees in advance
- Get a mobile or printable boarding pass
- Access real-time flight updates
Simply log in with your confirmation number or MileagePlus® account, follow the prompts, and you’re set. The United app also supports mobile boarding passes that can be scanned at TSA checkpoints and boarding gates.
Airport Check-In
If you prefer to check in at the airport, United provides several options:
- Self-service kiosks: Available at most airports, these machines allow you to check in, print your boarding pass, and tag checked bags.
- Ticket counters: United agents are available to assist with check-in, baggage, and special requests, such as unaccompanied minors or passengers needing wheelchair assistance.
Check-In Deadlines
- For domestic flights, check-in must be completed at least 30 minutes before departure.
- For international flights, check-in closes 60 minutes before departure, though some airports may have earlier cutoffs.
- Passengers with checked bags are encouraged to arrive at least 2 hours before domestic flights and 3 hours before international flights to ensure timely baggage processing.
Curbside Check-In
At select airports, United also offers curbside check-in, where you can drop off bags and receive a boarding pass without entering the terminal. This service is subject to availability and may close 45-60 minutes before departure.
With multiple options and clear guidelines, United Airlines makes check-in simple, whether you're a frequent flyer or a first-time traveler.
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