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Cheap United Airlines flights

LHR
13 May — 20 May1
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 8 May 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches.

Cheapest Route

£43

Most Popular Route

PHX to LAX

Shortest flight

0h 52m

Longest Flight

9h 48m
Flying from San Diego to San Francisco
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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 Nashville Intl to Buffalo
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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 8 May 2025.

Thu 14/815:20BOS - LHR
1 stop13h 40mUnited Airlines
Sun 24/806:50LHR - BOS
2 stops14h 38mUnited Airlines
Deal found £445
Wed 8/1016:20BOS - EDI
1 stop10h 45mUnited Airlines
Wed 15/1012:30EDI - BOS
2 stops15h 23mUnited Airlines
Deal found £464
Wed 1/1022:00BOS - MAN
1 stop14h 25mUnited Airlines
Fri 10/1006:05MAN - BOS
2 stops20h 20mUnited Airlines
Deal found £484

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 8 May 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
8,719 reviews
Check prices
Overview

Food

6.6

Crew

8.1

Boarding

7.7

Entertainment

7.1

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 San Francisco, Chicago O'Hare Intl, 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 San Diego to San Francisco, which is £43. This round-trip flight has 0 stops. For a one-way domestic United Airlines flight, the cheapest route is San Francisco to San Diego (0 stops) for £22.

  • What is United Airlines’s cheapest international flight?

    The least expensive round-trip international United Airlines flight is: -Houston George Bush Intcntl to San Juan Luis Munoz Marin Intl, -0 stops, -£121 per ticket

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