United Airlines UA

402 nonstop destinations · 74 countries · Star Alliance

Main hubs: Chicago (ORD) · Denver (DEN) · Houston (IAH)

Cheap United Airlines nonstop deals

Direct round-trips on United Airlines below their typical price · updated continuously
San Diego San Francisco (SFO)
🔥 20%
United
Oct 16 – Oct 23 · 7 nights
$137 typical $172
Houston Detroit (DTW)
🔥 41%
United Frontier
Dec 3 – Dec 10 · 7 nights
$151 typical $258
Los Angeles Vancouver (YVR)
🔥 58%
United Flair
Oct 14 – Oct 21 · 7 nights
$160 typical $378
Watch cheap United Airlines deals The cheapest nonstop round-trips from Chicago (ORD), where United Airlines is based — free, weekly, no password.

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Where United Airlines flies nonstop

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About United Airlines

United Airlines (UA) operates 2224 nonstop routes to 402 destinations across 74 countries, departing from 392 airports. Its busiest bases by nonstop route count are Chicago (ORD), Denver (DEN) and Houston (IAH). United Airlines is a member of Star Alliance. Updated 30 August 2026.

Busiest United Airlines routes

Frequently asked questions

Where does United Airlines fly?

United Airlines (UA) flies nonstop to 402 destinations in 74 countries, with the most routes from Chicago (ORD), Denver (DEN) and Houston (IAH).

How many destinations does United Airlines fly to?

United Airlines operates 2224 nonstop routes serving 402 destinations across 74 countries.

What are United Airlines's main hubs?

United Airlines's busiest airports by nonstop route count are Chicago (ORD) (221 routes), Denver (DEN) (198 routes) and Houston (IAH) (180 routes).

Is United Airlines part of an airline alliance?

Yes — United Airlines is a member of Star Alliance.

Which routes does United Airlines fly most frequently?

United Airlines's most frequent nonstop routes are DEN–TUS (multiple daily), HND–SFO (multiple daily), HND–LAX (multiple daily), TPE–SFO (multiple daily) and PVG–LAX (multiple daily).

Other Star Alliance airlines: Croatia Airlines Avianca LOT - Polish Airlines Turkish Airlines EVA Air Austrian Air Canada SWISS

United Airlines hubs: Chicago (ORD) Denver (DEN) Houston (IAH) Newark (EWR) Dulles (IAD) San Francisco (SFO)