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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.

You can modify your trip or manage your reservation by going to My trips. Find MileagePlus ® contact information for your region. Book your trip online at any time. Get additional help through our Help Center.

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

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Enjoy discounts on over 4,500 flights to 300+ destinations. Some United deals also let you earn extra miles.

Check the status of your United Airlines flight by searching by route or flight number. Stay up to date with our flight status tools.

Book United Airlines’ lowest airfares and save when you bundle your hotel and car rental with United Packages, plus earn 1,000 miles per package. Search with ease for global destinations served by our Star Alliance network in our MileagePlus integrated experience, Powered …

MileagePlus sign-in is not available when booking with myUAdiscount. You may add your MileagePlus number on the traveler information page during the booking process.

If you’d prefer to book your reservation over the phone, call 1-800-UNITED-1 (1-800-864-8331). A fee may apply for redemption by phone. You’ll be asked to provide the last name of the certificate recipient.