United Airlines flights from Washington, D.C. Dulles Intl Airport to London (IAD - LON)

IAD — LON
Feb 27 — Mar 51

Cheapflights users flying from Washington, D.C. to London on United Airlines typically fly into London Heathrow and depart from Washington, D.C. Dulles Intl. Select your dates above for pricing.

United Airlines flights from Dulles Intl to London in 2024

Find detailed information about United Airlines flights from Dulles Intl to London. Explore the options provided by United Airlines to plan your journey from Dulles Intl to London. Data last updated February 22, 2024.

Popular in

June

Cheapest in

February

Average price (all airlines)

$609

One-way from

$458

Round-trip from

$638
Highest demand for flights from Washington, D.C. Dulles Intl to London; 13% potential price increase.
Best time to find cheap flights from Washington, D.C. Dulles Intl to London; 2% potential price drop.
Average price for all Washington, D.C. Dulles Intl to London flights (one-way and round-trip).
Cheapest one-way United Airlines flight from Washington, D.C. Dulles Intl to London
Cheapest round-trip United Airlines flight from Washington, D.C. Dulles Intl to London

Can I get a flight from Washington, D.C. Dulles Intl Airport to London on United Airlines for under $700?

Cheapflights currently has 18 IAD-LON flights for under $700. Flights to London will vary based on many factors, like date and time. Click here to find the best price for your dates on Cheapflights.

How do most travelers feel about United Airlines?

United Airlines has received a 6.9/10 rating from 26 Cheapflights user reviews. If you wish to plan your next trip from Washington, D.C. Dulles Intl Airport to London with United Airlines, enter your preferred travel dates above!

Cheapest United Airlines flights from Dulles Intl to London

Discover the cheapest flight options specifically offered by United Airlines for travel from Dulles Intl to London. Compare prices and availability to find the most affordable fares for your desired travel dates. These prices are based on average fares users found. In the last 7 days, Cheapflights users made a total of 3,442,422 searches. The data was last updated on February 22, 2024.
Mon 3/1111:15 pmIAD - LHR
Nonstop7h 10mUnited Airlines
Mon 3/188:50 amLHR - IAD
1 stop34h 40mUnited Airlines
Deal found 2/20$638
Sun 3/107:25 pmIAD - LHR
Nonstop7h 15mUnited Airlines
Mon 3/188:50 amLHR - IAD
1 stop34h 40mUnited Airlines
Deal found 2/20$639
Mon 3/113:45 pmIAD - LHR
1 stop11h 25mUnited Airlines
Thu 3/218:30 amLHR - IAD
1 stop12h 20mUnited Airlines
Deal found 2/20$640

Direct flights from Dulles Intl to London on United Airlines

Discover the cheapest flight options specifically offered by United Airlines for travel from Dulles Intl to London. Compare prices and availability to find the most affordable fares for your desired travel dates. These prices are based on average fares users found. In the last 7 days, Cheapflights users made a total of 3,442,422 searches. The data was last updated on February 22, 2024.
Wed 3/137:25 pmIAD - LHR
Nonstop7h 15mUnited Airlines
Thu 3/2112:05 pmLHR - IAD
Nonstop8h 35mUnited Airlines
Deal found 2/21$655
Wed 5/16:30 pmIAD - LHR
Nonstop7h 15mUnited Airlines
Wed 5/812:15 pmLHR - IAD
Nonstop8h 05mUnited Airlines
Deal found 2/22$656
Sun 4/76:30 pmIAD - LHR
Nonstop7h 15mUnited Airlines
Tue 4/3012:15 pmLHR - IAD
Nonstop8h 05mUnited Airlines
Deal found 2/20$658

Last minute deals on Cheapflights

Explore last-minute flight deals on United Airlines for various destinations, including Dulles Intl to London. Discover attractive deals on flights departing soon. Keep an eye on the latest last-minute deals to find great opportunities for spontaneous travel. Please note that prices are subject to change and availability may vary. Data last updated February 22, 2024 and based on user searches. In the last 7 days, Cheapflights users made a total of 3,442,422 searches.
Wed 2/286:25 pmIAD - LHR
Nonstop7h 15mUnited Airlines
Mon 3/41:45 pmLHR - IAD
1 stop30h 45mUnited Airlines
Deal found 2/21$643
Wed 2/286:25 pmIAD - LHR
Nonstop7h 15mUnited Airlines
Thu 3/77:30 amLHR - IAD
1 stop11h 50mUnited Airlines
Deal found 2/21$645
Sun 3/35:05 pmIAD - LHR
1 stop10h 20mUnited Airlines
Mon 3/188:50 amLHR - IAD
1 stop34h 40mUnited Airlines
Deal found 2/21$648

One-way United Airlines flights to London from Dulles Intl

Search for one-way flight options from Dulles Intl to London specifically provided by United Airlines. Find affordable one-way fares from United Airlines and compare prices with other airlines. These prices are based on average fares users found. In the last 7 days, Cheapflights users made a total of 3,442,422 searches. The data was last updated on February 22, 2024.
Mon 7/86:30 pmIAD - LHR
Nonstop7h 15mUnited Airlines
Deal found 2/21$458
Sun 3/245:55 pmIAD - LHR
1 stop10h 30mUnited Airlines
Deal found 2/22$459
Tue 3/56:40 pmIAD - LHR
Nonstop6h 45mUnited Airlines
Deal found 2/21$462

Average price of United Airlines flights from Dulles Intl to London

Plan your United Airlines flight from Dulles Intl to London by taking into account the cheapest months to travel. The average price of a one-way United Airlines flight from Dulles Intl to London is currently $460 while a round-trip flight costs $656. Price data was last updated on February 18, 2024.

Currently, the most affordable month to book a United Airlines flight from Washington, D.C. Dulles Intl Airport to London in November, with an average price of $652. Conversely, traveling with United Airlines from Washington, D.C. Dulles Intl Airport to London in June will be the most expensive, with an average cost of $1,187. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

January

$675

February

$665

March

$710

April

$737

May

$769

June

$1,187

July

$1,017

August

$801

September

$751

October

$717

November

$652

December

$676

Temperature and rainfall in London by month

Plan your trip to London by taking into account the average temperature and rainfall totals by month.

LON

Temperature

39.2 - 62.6 °F

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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Fly from Dulles Intl to London on another airline
Consider alternative airlines that service the London area. Flight routes are based on user searches made on Cheapflights and were last updated on February 22, 2024.

See what others are saying about United Airlines

Read reviews and see what other travelers are saying about their experiences with United Airlines. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing United Airlines for your next flight. Reviews last updated February 22, 2024.
United Airlines
7.4
Good
11,872 reviews
Overview

Entertainment

7.1

Food

6.7

Crew

8.1

Comfort

7.2

Boarding

7.7
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