United Airlines is one of the world's largest carriers, operating over 340 destinations from eight U.S. hubs including Chicago O'Hare, Newark, San Francisco, Houston, and Denver. As a Star Alliance founding member, United connects passengers to a global network of partner airlines across six continents. Whether you're flying domestic or international, FaresMatch advisors compare United fares daily to find you the lowest available price.
Trending United Airlines fares
One-way starting prices on popular United routes. Search above for live availability.
ChicagoShoulder seasonSFO → ORDSan Francisco – Chicago- Flight time
- 4h nonstop
- Airlines
- United
$89
DenverMidweek dealLAX → DENLos Angeles – Denver- Flight time
- 2h 30m nonstop
- Airlines
- United
$79
MiamiFall travelEWR → MIANewark – Miami- Flight time
- 3h nonstop
- Airlines
- United
$89
HawaiiBook earlySFO → HNLSan Francisco – Honolulu- Flight time
- 5h 30m nonstop
- Airlines
- United
$249
LondonSpring travelIAD → LHRWashington Dulles – London- Flight time
- 7h 30m nonstop
- Airlines
- United
$330
TokyoBook earlyORD → NRTChicago – Tokyo Narita- Flight time
- 13h nonstop
- Airlines
- United
$480
United Airlines hubs
United's eight U.S. hubs give it unmatched domestic coverage and strong international connectivity. Each hub anchors a different region and feeds into United's global network.
Los Angeles
ORD Chicago O'Hare
United's largest hub by flights operated. Key gateway for East–West transcontinental and transatlantic routes.
EWR Newark Liberty
United's primary East Coast hub, serving as the main transatlantic gateway for New York area passengers.
SFO San Francisco
United's West Coast hub with extensive transpacific routes to Japan, China, South Korea, and Australia.
IAH Houston Intercontinental
United's gateway to Latin America — the most connected hub for Central and South American destinations.
DEN Denver
United's hub for the Mountain West, connecting the Rockies and Great Plains to the coasts.
LAX Los Angeles
United's Southern California hub feeding the West Coast to domestic and international destinations.
Tips for booking cheap United flights
United domestic fares are typically most competitive 3 to 6 weeks before departure. For international routes, booking 2 to 4 months ahead usually finds the best prices before peak-season demand fills the lowest fare buckets.
United's Basic Economy is the lowest fare but restricts seat selection and doesn't allow changes or cancellations. It works well for certain travel if you're packing light and certain of your dates — otherwise, upgrade to Economy for more flexibility.
Tuesdays and Wednesdays consistently show the lowest United fares on domestic routes. Friday and Sunday carry a premium from business and leisure demand. Midweek travel can save $30–$80 each way.
United's MileagePlus is a Star Alliance program, giving earning and redemption opportunities across 40+ partner airlines including Lufthansa, Singapore Airlines, ANA, and Air Canada.
United Airlines cabin classes
United Polaris (Business)
Basic Basic Economy
Lowest fare — no seat selection, no changes, no carry-on upgrades. Best for simple point-to-point travel with just a bag.
Economy Economy
Standard economy with seat selection, free carry-on, and no-fee change policy. The most popular fare for most travelers.
Economy+ Economy Plus
Extra legroom seats in economy. Available as an upgrade or included with Premier status. Good for longer domestic or transatlantic routes.
Polaris United Polaris (Business)
United's international long-haul business class with lie-flat seats, direct aisle access, multi-course dining, and a dedicated lounge at major hubs.
Frequently asked questions
How many hubs does United Airlines have?
United operates eight U.S. hubs: Chicago O'Hare (ORD), Newark (EWR), San Francisco (SFO), Houston Intercontinental (IAH), Denver (DEN), Los Angeles (LAX), Washington Dulles (IAD), and Guam (GUM). Chicago and Newark are the largest by flight volume.
What is United Airlines MileagePlus?
MileagePlus is United's free frequent flyer program. Members earn miles on United and Star Alliance partner flights and can redeem them for award flights, upgrades, and partner rewards. Premier status tiers — Silver, Gold, Platinum, and 1K — unlock complimentary upgrades, priority boarding, waived bag fees, and bonus miles.
Does United Airlines charge for checked bags?
United allows one personal item and one carry-on bag free on most fare types. Checked bags start at $35 for the first bag on domestic routes. Basic Economy does not allow carry-on upgrades on select routes. MileagePlus credit card holders and Premier status members receive complimentary checked bags.
What is United Polaris?
United Polaris is United's long-haul international business class. It features lie-flat seats with direct aisle access on most aircraft, multi-course dining designed by notable chefs, Saks Fifth Avenue bedding, and access to Polaris Lounges at Chicago O'Hare, Newark, Houston, San Francisco, Los Angeles, and Tokyo Narita.
Can I change or cancel a United Airlines flight?
United's Economy and above allow changes and cancellations with no fee. Basic Economy does not allow changes. Cancelled eligible tickets receive a travel credit valid for 12 months. Refundable fares return the full amount to the original payment method. Changes can be made online, via the app, or by calling United.
Find the cheapest United Airlines fare
A FaresMatch advisor will compare United fares — including unpublished rates — with all other available options on your route to lock in the best price for your trip.