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$301+ Cheap flights from Dulles Intl (IAD) to London, ON (YXU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/26. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YXU
jul. 19 — jul. 261
sáb. 7/19
sáb. 7/26
1 adult, Economy
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Cheap flight deals from Dulles Intl to London

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to London (YXU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated julio 14, 2025.

Round-trip from

$741
(Mytrip)

One-way from

$301
(Kiwi.com)
From Washington, D.C. Dulles Intl to London
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One-way flight from Washington, D.C. Dulles Intl to London
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Find flight deals from Dulles Intl to London

Cheapest flights from Dulles Intl to London
Explore the most affordable flight options available from Dulles Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 14, 2025.

This Mytrip deal was found by Cheapflights users on 7/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/2812:48 pmIAD - YXU
3 stops40h 26mMultiple Airlines
jue. 9/48:00 pmYXU - IAD
3 stops19h 06mMultiple Airlines
Deal found 7/14$741
This Air Canada deal was found by Cheapflights users on 7/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/2710:20 amIAD - YXU
1 stop4h 42mAir Canada
mié. 9/39:55 amYXU - IAD
1 stop6h 15mAir Canada
Deal found 7/13$763
This oojo deal was found by Cheapflights users on 7/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/276:45 pmIAD - YXU
1 stop10h 29mWestJet
mié. 9/38:00 pmYXU - IAD
2 stops15h 23mWestJet
Deal found 7/13$853
This United Airlines deal was found by Cheapflights users on 7/13. 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.
mié. 8/276:35 amIAD - YXU
2 stops8h 27mUnited Airlines
mié. 9/36:15 amYXU - IAD
2 stops10h 05mUnited Airlines
Deal found 7/13$919

Cheapflights Fare Finder

Customize your flight search to find flights from Dulles Intl to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julio 14, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to London that are best for you.

Fly from

Dulles Intl

Fly to

London

Route

Depart

Return

Price

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

jue. 8/28

12:48 pm-5:14 am

3 stops40h 26m

London

jue. 9/4

8:00 pm-3:06 pm

3 stops19h 06m

$741

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

mié. 8/27

10:20 am-3:02 pm

1 stop4h 42m

London

mié. 9/3

9:55 am-4:10 pm

1 stop6h 15m

$763

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

mié. 8/27

6:45 pm-5:14 am

1 stop10h 29m

London

mié. 9/3

8:00 pm-11:23 am

2 stops15h 23m

$853

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

mié. 8/27

6:35 am-3:02 pm

2 stops8h 27m

London

mié. 9/3

6:15 am-4:20 pm

2 stops10h 05m

$919

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

sáb. 7/26

7:30 am-5:14 am

3 stops21h 44m

$301

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

sáb. 7/26

10:20 am-3:02 pm

1 stop4h 42m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/14

Best time to book a flight from Dulles Intl to London

Have a flexible travel schedule? Discover the best time to fly to London from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated julio 14, 2025.
See what other customers who have flown with United Airlines, WestJet, and Air Canada from Washington, D.C. Dulles Intl Airport to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,856 reviews

Food

6.6

Entertainment

7.0

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,856 reviews
United Airlines
7.4
Good
8,856 reviews

Food

6.6

Entertainment

7.0

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
WestJet
7.2
Good
2,939 reviews
United Airlines
7.4
Good
8,856 reviews

Food

6.6

Entertainment

7.0

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
9,717 reviews
United Airlines
7.4
Good
8,856 reviews

Food

6.6

Entertainment

7.0

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to London from Washington, D.C. Dulles Intl?

    London (YXU) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to London. You should not have trouble finding flights to London from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the London airport from Washington, D.C. Dulles Intl. It is only a 5.3 mi journey from London (YXU) to London’s city center.

  • Can I find deals for flights from Dulles Intl to London that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to London.

  • Can I find deals for business class flights from Dulles Intl to London?

    Yes. Cheapflights offers flight deals from Dulles Intl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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