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Cheap United Airlines flights

LHR
16 Jul — 23 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 11 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

15h 50m
Flying from San Francisco to Ontario
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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 Boston Logan Intl to Calgary
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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 11 July 2025.

Sat 18/1018:30BOS - BHX
2 stops41h 45mUnited Airlines
Tue 21/1005:55BHX - BOS
2 stops21h 44mUnited Airlines
Deal found £347
Tue 4/1115:40BOS - LHR
1 stop10h 30mUnited Airlines
Fri 14/1113:50LHR - BOS
1 stop11h 30mUnited Airlines
Deal found £368
Mon 1/918:56BOS - EDI
1 stop11h 44mUnited Airlines
Tue 9/912:30EDI - BOS
1 stop11h 25mUnited Airlines
Deal found £389

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 11 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
8,846 reviews
Check prices
Overview

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.0
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 San Francisco to Ontario, which is £42. This round-trip flight has 0 stops. For a one-way domestic United Airlines flight, the cheapest route is Los Angeles to Las Vegas Harry Reid Intl (0 stops) for £29.

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