- Log in and select itinerary.
- You may check in within 24 hours of flight departure. Online check-in closes
1 hour before flights within the U.S. and
2 hours before international flights.
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- Select seats.
- Add frequent flyer information.
- Request upgrades.
- Enter your bag check information and pay your baggage fees in advance.
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- Print or reprint your boarding documents online or at the airport.
- Check any baggage curbside* or with a United customer service agent.
- If you are not checking bags, proceed to airport security.
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