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Book United Airlines cheap flights to 300+ destinations worldwide on our official site. Find our most popular flight deals and earn MileagePlus® miles.

Traveler pro tips We have a few tips to help you make changes to your trip: You can modify your trip or manage your reservation by going to My trips. Find MileagePlus ® contact information …

Sign in to your MileagePlus account on the official website of United Airlines.

Check in for your United or United Express-operated flight, depending on where you are in your travel experience.

To retrieve a previously booked reservation, please enter your reservation number and the password you used to book your vacation below.

Use miles to book award flights on United and Star Alliance™ partner airlines. Cardmembers can also redeem earned miles for a statement credit when they use their card to buy United flights.

Find the best deals on vacation packages to destinations in Mexico, Caribbean, Hawaii, Central America, and South America with United Vacations.

Find and compare United Airlines flights & tickets for all destinations, read 8,918 reviews, see United Airlines fees, cancellation policy and flight information | KAYAK

Book your next hotel stay with United Hotels and earn double the Mileageplus miles on almost a million properties. Sign in for exclusive deals and offers.