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United Airlines Help Center provides FAQs and guidance on flights, refunds, credits, baggage policy, MileagePlus, seats/upgrades, and more.

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

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

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

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Learn how to earn miles everywhere you go. Our miles never expire, so you'll keep what you earn as a MileagePlus member until you're ready to redeem.

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