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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.

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We will be making system updates from Friday, November 1, 11pm CT through Saturday, November 2, 11am CT.

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If you need to purchase tickets or change your itinerary, you can contact your local United office.

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Oct 28, 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.

Earn miles with United Airlines' promotions and MileagePlus program. Explore travel deals and maximize rewards for your journeys.