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Cheap United Airlines flights

LHR
21 Feb — 28 Feb1
1 adult
1 adult, Economy, 0 bags

United Airlines information

Discover detailed information about United Airlines flights, including average fare prices, reviews, and more. Flight info is based on data from user searches last updated on 22 January 2026. In the last 7 days, Cheapflights users made a total of 858,174 searches.

Cheapest Route

£57

Most Popular Route

SFO to LAX

Shortest flight

1h 19m

Longest Flight

11h 59m
Flying from Denver Intl to Phoenix Sky Harbor Intl
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Flying from San Francisco to Los Angeles
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Flying from Washington, D.C. Dulles Intl to Newark
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Flying from Chicago O'Hare Intl to Calgary
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Cheapest United Airlines flights
Explore the most affordable United Airlines flight options available. Find the lowest fares based on data from user searches, with prices last updated on 22 January 2026.

Sat 7/319:55
BOS
-
LHR
1 stop31h 35m
United Airlines
Tue 10/306:35
LHR
-
BOS
1 stop17h 00m
United Airlines
Deal found £366
Sat 2/518:25
BOS
-
LHR
1 stop21h 35m
United Airlines
Wed 13/512:10
LHR
-
BOS
1 stop12h 45m
United Airlines
Deal found £366
Tue 17/205:35
BOS
-
MAN
2 stops23h 45m
United Airlines
Tue 24/206:10
MAN
-
BOS
2 stops17h 31m
United Airlines
Deal found £393

United Airlines Reviews

Read reviews and feedback from other travellers about their experiences with United Airlines sourced from user searches. These reviews were last updated on 22 January 2026 and provide insights based on users' experiences. In the last 7 days, Cheapflights users made a total of 858,174 searches.
United Airlines
7.4
Good
9,191 reviews
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Overview

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Frequently asked questions about United Airlines

  • What are the most popular United Airlines airports?

    The most popular airports for United Airlines are Los Angeles, San Francisco, and Chicago O'Hare Intl according to our data. Flights to or from any of these airports should be available via United Airlines year-round.

  • What is United Airlines’s cheapest domestic flight?

    The cheapest domestic United Airlines flight is flying Denver Intl to Phoenix Sky Harbor Intl, which is £57. This round-trip flight has 0 stops. For a one-way domestic United Airlines flight, the cheapest route is El Paso to Denver Intl (0 stops) for £29.

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