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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.
Check in for your United or United Express-operated flight, depending on where you are in your travel experience.
Find the latest travel deals on flights, hotels and rental cars. Book airline tickets and MileagePlus award tickets to worldwide destinations.
Select adults, seniors and children Select Travelers. You are only allowed to book corporate travel for yourself. Learn more. Unaccompanied minors. Traveling with children. For 10+ travelers: Request a bid.
Check the status of your United Airlines flight by searching by route or flight number. Stay up to date with our flight status tools.
Help with trips. See how to check in for flights, watch your flight's status, register for TSA PreCheck and more. TSA PreChecklink opens in new window. Get through security faster with a Known Traveler Numbers. Global Entrylink opens in new window.
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.
Learn about our airport check-in process, expedited security programs like TSA PreCheck® and our United Clubs. Traveling with bags Our rules for checked and carry-on bags, special items and fees.
future flight credits and travel certificates. View your options if your flight has been delayed or canceled. international travel requirements. 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.