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United Airlines is a major American airline that offers online flight check-in and MileagePlus rewards program.
Book United Airlines cheap flights to 300+ destinations worldwide on our official site. Find our most popular flight deals and earn MileagePlus® miles.
Book an award flight Book a flight. Do you want to use a recent search? ... All airlines United and United Express® only All Star Alliance™ airlines. Preferred connections Preferred connections. ... We allow one pet per adult or senior in a reservation. See other pet restrictions.
Find the latest travel deals on flights, hotels and rental cars. Book airline tickets and MileagePlus award tickets to worldwide destinations.
Check the status of your United Airlines flight by searching by route or flight number. Stay up to date with our flight status tools.
Contact reservations directory. Contact us for help with buying tickets or making changes to an existing trip.
Use miles to pre-pay for bags up to 24 hours before your flight or pay at check-in on united.com and the United app for all domestic flights.
Check in for your United or United Express-operated flight, depending on where you are in your travel experience.
Sign in to your MileagePlus account on the official website of United Airlines. We and our third-party partners use cookies and similar tracking technologies to make our site function, improve your experience and display personalized content.
See how to check in for flights, watch your flight's status, register for TSA PreCheck and more. TSA PreCheck link opens in new window Get through security faster with a Known Traveler Numbers