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

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

Our Help Center has FAQs & helpful information to assist you with changing/canceling your flight, refunds, using your credits, baggage policy, MileagePlus, seat/upgrades, etc.

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

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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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Jun 4, 2025 · Travel to and from certain airports might be impacted. View our Travel Alerts page for the most up-to-date information about your flight options.

Get more flexibility when you fly with our 24-hour booking policy and no change fees for most flights (including award travel).