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Find cheap United Airlines flights to London

RDU — YXU
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find United Airlines flight deals to London

Cheapest United Airlines flights from USA to London
Explore the most affordable United Airlines flight options available from USA to London. Find the lowest fares with prices last updated on July 27, 2026.

This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1110:51 pm
SFO
-
YXU
1 stop7h 29m
United Airlines
Wed 8/123:30 pm
YXU
-
SFO
2 stops12h 00m
United Airlines
Deal found 7/24$492
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:35 am
SFO
-
YXU
2 stops11h 15m
United Airlines
Mon 8/316:20 pm
YXU
-
SFO
1 stop17h 48m
United Airlines
Deal found 7/24$511
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:05 pm
SFO
-
YXU
2 stops16h 15m
United Airlines
Mon 8/315:40 am
YXU
-
SFO
2 stops12h 34m
United Airlines
Deal found 7/27$526

Flights to London with United Airlines at a glance

Find detailed information about United Airlines flights from USA to London. Explore the options provided by United Airlines to plan your journey from USA to London. Data last updated July 27, 2026.

Round-trip from

$492

One-way from

$433
United Airlines
  • United Airlines
  • 8/11-8/12
  • 3 total stops
  • 19h 29m total
  • USA to London
Search Deals
United Airlines
  • United Airlines
  • 11/12
  • 2 total stops
  • 21h 37m total
  • USA to London
Search Deals

Cheapflights Insights

Find cheap United Airlines flights to London

How long is the flight to London with United Airlines?

On average, United Airlines flights from the United States to London take 5 hours 7 minutes. Flights to London from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

FAQs about flights to London with United Airlines

  • Is United Airlines the cheapest airline for a flight to London?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to London tends to be with United Airlines.

  • Are there alternative airlines other than United Airlines that fly to London?

    Air Canada and WestJet all fly to London and offer an alternative to United Airlines.

Reviews of United Airlines

See what Cheapflights users have to say about their United Airlines experience.
United Airlines
7.4
Good
10,000 reviews
Overview

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Food

6.6

Crew

8.1

Popular United Airlines flights

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