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Cheap United Airlines flights

LHR
8 Jul — 15 Jul1
1 adult

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 3 July 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches.

Cheapest Route

£42

Most Popular Route

PHX to LAX

Shortest flight

0h 46m

Longest Flight

14h 08m
Flying from Ontario to San Francisco
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Flying from Phoenix Sky Harbor Intl to Los Angeles
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Flying from Denver Intl to Cheyenne
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Flying from Tampa to Toronto Pearson Intl
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Find United Airlines flight deals

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 3 July 2025.

Sun 10/820:03BOS - LHR
1 stop10h 22mUnited Airlines
Tue 19/816:00LHR - BOS
1 stop12h 08mUnited Airlines
Deal found £376
Sun 24/819:10BOS - EDI
1 stop11h 30mUnited Airlines
Tue 2/911:15EDI - BOS
1 stop11h 40mUnited Airlines
Deal found £387
Tue 12/812:50BOS - MAN
2 stops16h 05mUnited Airlines
Tue 19/806:05MAN - BOS
2 stops16h 29mUnited Airlines
Deal found £409

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 3 July 2025 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
8,861 reviews
Check prices
Overview

Entertainment

7.0

Food

6.6

Boarding

7.7

Crew

8.1

Comfort

7.3
Pros +
  • "Everything was cool, smooth flight." (in 2442 reviews)
  • The flight arrived early and that was great (in 143 reviews)
  • Flight was quick and easy. (in 2395 reviews)
Cons -
  • Customer service was very poor. (in 236 reviews)
  • I will Never fly on them Again! (in 554 reviews)
  • Entertainment wasn’t working well at all (in 1245 reviews)

Frequently asked questions about United Airlines

  • What are the most popular United Airlines airports?

    The most popular airports for United Airlines are Chicago O'Hare Intl, San Francisco, and Newark 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 Ontario to San Francisco, which is £42. This round-trip flight has 0 stops. For a one-way domestic United Airlines flight, the cheapest route is Ontario to San Francisco (0 stops) for £21.

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