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$204+ 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YXU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$516
(Air Canada)

One-way from

$204
(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 September 11, 2025.

This Air Canada deal was found by Cheapflights users on 9/9. 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.
Fri 10/2410:20 amIAD - YXU
1 stop4h 42mAir Canada
Fri 10/319:25 amYXU - IAD
1 stop11h 04mAir Canada
Deal found 9/9$516
This Air Canada deal was found by Cheapflights users on 9/8. 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.
Tue 11/254:25 pmIAD - YXU
1 stop4h 56mAir Canada
Fri 11/289:25 amYXU - IAD
1 stop6h 26mAir Canada
Deal found 9/8$517
This Air Canada deal was found by Cheapflights users on 9/11. 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.
Sun 10/1910:20 amIAD - YXU
1 stop4h 42mAir Canada
Wed 10/229:55 amYXU - IAD
1 stop3h 43mAir Canada
Deal found 9/11$562
This Air Canada deal was found by Cheapflights users on 9/11. 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.
Sun 10/264:30 pmIAD - YXU
1 stop4h 51mAir Canada
Sun 11/29:25 amYXU - IAD
1 stop11h 01mAir Canada
Deal found 9/11$585
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/2410:20 amIAD - YXU
1 stop4h 42mUnited Airlines
Fri 10/319:25 amYXU - IAD
2 stops11h 32mUnited Airlines
Deal found 9/9$626
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/239:15 amIAD - YXU
2 stops19h 57mMultiple Airlines
Fri 9/266:00 amYXU - IAD
1 stop11h 50mMultiple Airlines
Deal found 9/9$631
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Sat 9/2710:20 amIAD - YXU
1 stop4h 57mAir Canada
Sat 10/46:15 amYXU - IAD
1 stop7h 23mAir Canada
Deal found 9/9$642
This United deal was found by Cheapflights users on 9/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/104:30 pmIAD - YXU
1 stop4h 51mMultiple Airlines
Fri 12/125:45 amYXU - IAD
2 stops10h 36mMultiple Airlines
Deal found 9/11$653

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 September 11, 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

Fri 10/24

10:20 am-3:02 pm

1 stop4h 42m

London

Fri 10/31

9:25 am-8:29 pm

1 stop11h 04m

$516

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 11/25

4:25 pm-9:21 pm

1 stop4h 56m

London

Fri 11/28

9:25 am-3:51 pm

1 stop6h 26m

$517

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 10/19

10:20 am-3:02 pm

1 stop4h 42m

London

Wed 10/22

9:55 am-1:38 pm

1 stop3h 43m

$562

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 10/26

4:30 pm-9:21 pm

1 stop4h 51m

London

Sun 11/2

9:25 am-8:26 pm

1 stop11h 01m

$585

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 12/10

4:30 pm-9:21 pm

1 stop4h 51m

London

Fri 12/12

9:25 am-8:26 pm

1 stop11h 01m

$585

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Fri 10/24

10:20 am-3:02 pm

1 stop4h 42m

London

Fri 10/31

9:25 am-8:57 pm

2 stops11h 32m

$626

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 9/23

9:15 am-5:12 am

2 stops19h 57m

London

Fri 9/26

6:00 am-5:50 pm

1 stop11h 50m

$631

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sat 9/27

10:20 am-3:17 pm

1 stop4h 57m

London

Sat 10/4

6:15 am-1:38 pm

1 stop7h 23m

$642

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 12/10

4:30 pm-9:21 pm

1 stop4h 51m

London

Fri 12/12

5:45 am-4:21 pm

2 stops10h 36m

$653

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Thu 10/16

1:07 pm-5:12 am

2 stops40h 05m

$204

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 11 results
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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.

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.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to London, Ontario?

    Departing from Washington, D.C. Dulles Intl Airport to London, Ontario will take you 4h 42m. The distance from Washington, D.C. Dulles Intl Airport to London, Ontario is about 341 mi.

  • 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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Alternative routes for Dulles Intl to London

See prices for flight routes from nearby airports that may be better suited for you.
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