United Airlines Flights & Reservations
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United Airlines is one of the world's largest carriers and a founding member of Star Alliance, serving more than 340 destinations across the globe. With eight major U.S. hubs and a wide domestic and international network, United connects virtually every corner of the country — and beyond. FaresMatch advisors compare United fares daily and can help you lock in the cheapest ticket for your route, whether you're flying coast-to-coast or across the Pacific.
Trending United fares
One-way starting prices on popular United routes. Search above for live availability.
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Chicago
Shoulder season LAX → ORD Los Angeles – Chicago O'Hare- Flight time
- 4h nonstop
- Airlines
- United
$95Low fare -
Los Angeles
Midweek deal ORD → LAX Chicago – Los Angeles- Flight time
- 4h nonstop
- Airlines
- United, American
$99Low fare -
Miami
Fall travel EWR → MIA Newark – Miami- Flight time
- 3h nonstop
- Airlines
- United
$85Low fare -
Orlando
Book early DEN → MCO Denver – Orlando- Flight time
- 3h 40m nonstop
- Airlines
- United, Frontier
$99Low fare -
London
Spring travel EWR → LHR Newark – London Heathrow- Flight time
- 7h nonstop
- Airlines
- United
$340Low fare -
Tokyo
Book early SFO → NRT San Francisco – Tokyo Narita- Flight time
- 11h nonstop
- Airlines
- United, ANA
$520Low fare
Prices shown are recent starting fares and may change with date, demand, route, and availability.
Top United Airlines routes
United's network radiates from eight major U.S. hubs, with Chicago O'Hare, Newark, and San Francisco handling the heaviest domestic and international traffic. Fares stay competitive on most corridors thanks to strong alliance and codeshare coverage.
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ORD → LAX/SFO Chicago to California
United dominates this corridor from its O'Hare hub to both Los Angeles and San Francisco.
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EWR → LHR Newark to London Heathrow
One of United's flagship transatlantic routes, with multiple daily nonstops from Newark.
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SFO → NRT San Francisco to Tokyo
Key Pacific route operated from United's San Francisco hub in a partnership with ANA.
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IAH → MEX Houston to Mexico City
United's Houston hub is the gateway to Latin America with strong Mexico City coverage.
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DEN → ORD Denver to Chicago
Busy midcontinent route connecting United's Denver hub to its O'Hare hub.
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EWR → SFO Newark to San Francisco
Busy transcontinental route with frequent nonstops between United's East and West Coast hubs.
United Airlines hubs
United operates eight U.S. hubs. Identifying which is closest to your departure city helps you find the most nonstop options and competitive fares.
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ORD Chicago O'Hare
United's largest hub and primary domestic gateway with the widest range of routes across the country.
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EWR Newark Liberty
United's main East Coast and transatlantic hub, serving Europe, the Middle East, and Africa.
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SFO San Francisco International
Primary transpacific hub with nonstops to Japan, Australia, and major Asian cities.
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IAH Houston Intercontinental
Gateway hub for Latin American routes and a major domestic connecting point in the South.
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DEN Denver International
United's Mountain West hub with strong Rocky Mountain regional service and transcontinental connections.
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LAX / IAD / GUM Los Angeles, Washington Dulles & Guam
Additional United hubs covering the West Coast, the D.C. area, and transpacific Pacific island routes.
Tips for booking cheap United flights
United domestic fares often find their best pricing 3 to 6 weeks before departure. For international routes, booking 2 to 4 months out tends to yield the strongest prices.
United's Basic Economy restricts seat selection, doesn't allow seat upgrades, and has stricter change rules. It works for simple trips but not for anyone who needs flexibility or has checked bags.
Tuesdays and Wednesdays consistently show lower fares on United's domestic network. Avoid Friday and Sunday, which are the most expensive travel days.
United's MileagePlus program partners with Star Alliance, giving access to award seats on over 40 airlines. Look for Saver Award prices before purchasing a cash ticket on premium routes.
United Airlines cabin classes
United offers multiple fare families across all cabin types. Here's a quick guide to what each includes so you can choose the right class for your trip.
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Basic Economy Basic Economy
Lowest published fare — middle seat assignment, no seat changes, no upgrades, and a stricter carry-on policy.
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Economy Economy (Standard)
Seat selection included, free carry-on and personal item, and standard change and refund rules.
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Economy Plus Economy Plus
Extra legroom economy seats — available as an upgrade or included for MileagePlus elite members.
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First (Domestic) First Class (Domestic)
Wider seats, complimentary meals and drinks, and priority boarding on domestic and regional routes.
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Prem. Plus Premium Plus (International)
International premium economy — wider recline, better dining, and extra amenities on long-haul flights.
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Polaris United Polaris Business
United's international business class with lie-flat seats, direct aisle access, and premium dining and amenities.
Frequently asked questions
How do I book United Airlines flights through FaresMatch?
Search United flights using the widget above or call a FaresMatch advisor directly. Our agents compare United fares — including unpublished and consolidator rates — against all available options and can help you find the best price for your route and dates.
What is the cheapest day to fly United?
Tuesdays and Wednesdays are generally the cheapest days to fly United on domestic routes. Fridays and Sundays tend to cost the most. For international routes, midweek departures also tend to be more affordable than weekend travel.
What is United's checked baggage policy?
United allows one personal item and one carry-on bag free in most fare classes. Checked bags start at $35 for the first bag and $45 for the second on domestic routes. United MileagePlus credit card holders and Premier status members receive complimentary checked bags depending on their tier.
Can I bring a pet on a United flight?
Yes — United accepts small dogs, cats, and rabbits in the cabin on most domestic routes. The pet must fit in an approved carrier under the seat. The in-cabin pet fee is $125 each way. Only one pet carrier is allowed per passenger, and advance booking is required.
What is United's MileagePlus program?
MileagePlus is United's frequent flyer program. Miles are earned on United flights and with Star Alliance partners, hotels, car rentals, and co-branded credit cards. Miles can be redeemed for flights, upgrades, and partner rewards. Premier status tiers — Silver, Gold, Platinum, and 1K — unlock extras like complimentary upgrades, bonus miles, and free checked bags.
Can I book last-minute United flights?
Yes — FaresMatch can book last-minute United flights, and our advisors will compare available fares quickly to find the best option. Last-minute prices are typically higher than booking in advance, but occasionally discounted seats appear close to departure, especially on less-busy routes.
How can I check in for a United flight?
United online check-in opens 24 hours before departure and closes 1 hour before. You can check in via the United app, the website, or at an airport kiosk or desk. Selecting your seat and checking bags in advance is strongly recommended, especially on busy routes.
Book your United flight today
Need the lowest fare on United? A FaresMatch advisor will compare United fares — including unpublished rates — with all available options on your route and dates to lock in the best price.
Mention promo code HELLO10 when you book by phone.
Fare ranges are typical recent prices and change with demand, dates, and availability; confirm live fares before booking. FaresMatch is an independent travel platform with no direct tie-up or affiliation with any airline.
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