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United Airlines is a major American airline that offers online flight check-in and MileagePlus rewards program.
Find the latest travel deals on flights, hotels and rental cars. Book airline tickets and MileagePlus award tickets to worldwide destinations.
Book United Airlines cheap flights to 300+ destinations worldwide on our official site. Find our most popular flight deals and earn MileagePlus® miles.
Need help? Learn more about our check-in process. Check in for your United or United Express-operated flight, depending on where you are in your travel experience.
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.
Upgrade type. Sign in to your MileagePlus ® account to see better search results. Upgrade to Premium Economy or Business. Fare class. Examples: Y, B, M. Searching by fare class may not be combinable with other search preferences (e.g. upgrades, fare types). Cabin. Economy Premium Economy Business First.
