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Cheap United Airlines flights

LHR
15 Feb — 22 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 16 January 2026. In the last 7 days, Cheapflights users made a total of 858,174 searches.

Cheapest Route

£72

Most Popular Route

PHX to LAX

Shortest flight

0h 58m

Longest Flight

11h 07m
Flying from San Francisco to Las Vegas Harry Reid Intl
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Flying from Phoenix Sky Harbor Intl to Los Angeles
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Flying from Cheyenne to Denver Intl
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Flying from Seattle/Tacoma Intl to Baltimore/Washington
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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 16 January 2026.

Tue 7/418:40
BOS
-
LHR
1 stop21h 20m
United Airlines
Mon 13/412:10
LHR
-
BOS
1 stop32h 20m
United Airlines
Deal found £368
Sat 21/218:40
BOS
-
LHR
1 stop20h 55m
United Airlines
Wed 4/309:00
LHR
-
BOS
1 stop13h 50m
United Airlines
Deal found £368
Wed 1/406:00
BOS
-
MAN
2 stops23h 25m
United Airlines
Thu 30/407:00
MAN
-
BOS
2 stops31h 54m
United Airlines
Deal found £403

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 16 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
9,164 reviews
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Overview

Entertainment

7.1

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Frequently asked questions about United Airlines

  • What are the most popular United Airlines airports?

    The most popular airports for United Airlines are San Francisco, Los Angeles, 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 San Francisco to Las Vegas Harry Reid Intl, which is £72. This round-trip flight has 0 stops. For a one-way domestic United Airlines flight, the cheapest route is Las Vegas Harry Reid Intl to San Francisco (0 stops) for £37.

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