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United Airlines Tickets and Reservations - Check in Online

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United Airlines offers check-in online, and a few of the particulars of their web check-in services:
  • United Airlines - Online Check-in is available up to 24 hours prior to departure.
  • Need any of the following to use online check-in - Mileage Plus member with a united.com password, reservation number, credit card number used to purchase the ticket.
  • Available for domestic and international flights.
  • If you are traveling on more than one airline during the check-in process, you will be alerted if your itinerary permits check-in on other airlines.
  • Drop off luggage at curbside check-in or with an agent.

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