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$202+ Cheap flights from Washington, D.C. (WAS) 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.
WAS — YXU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Washington, D.C. to London

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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

$202
(Kiwi.com)
From Washington, D.C. (WAS) to London
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One-way flight from Washington, D.C. (WAS) to London
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Find flight deals from Washington, D.C. to London

Cheapest flights from Washington, D.C. to London
Explore the most affordable flight options available from Washington, D.C. 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 9/10. 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 10/2511:00 amDCA - YXU
1 stop4h 02mAir Canada
Sat 11/15:40 pmYXU - DCA
1 stop4h 55mAir Canada
Deal found 9/10$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 10/1910:20 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 10/196:00 amDCA - YXU
2 stops9h 02mAir Canada
Wed 10/223:40 pmYXU - DCA
1 stop4h 04mAir Canada
Deal found 9/11$567
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 Mytrip deal was found by Cheapflights users on 9/10. 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.
Wed 9/247:02 pmBWI - YXU
2 stops34h 10mMultiple Airlines
Sat 9/276:00 amYXU - BWI
2 stops17h 25mMultiple Airlines
Deal found 9/10$593
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
This United Airlines 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:05 amDCA - YXU
2 stops8h 00mUnited Airlines
Fri 12/125:40 pmYXU - DCA
1 stop4h 55mUnited Airlines
Deal found 9/11$657

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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. to London that are best for you.

Fly from

Washington, D.C.

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

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sat 10/25

11:00 am-3:02 pm

1 stop4h 02m

London

Sat 11/1

5:40 pm-10:35 pm

1 stop4h 55m

$562

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

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Wed 12/10

6:00 am-5:05 pm

2 stops11h 05m

London

Fri 12/12

5:40 pm-10:35 pm

1 stop4h 55m

$567

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sun 10/19

6:00 am-3:02 pm

2 stops9h 02m

London

Wed 10/22

3:40 pm-7:44 pm

1 stop4h 04m

$567

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sun 10/26

12:55 pm-9:21 pm

2 stops8h 26m

London

Sun 11/2

5:45 am-12:19 pm

2 stops6h 34m

$572

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

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

Wed 9/24

7:02 pm-5:12 am

2 stops34h 10m

London

Sat 9/27

6:00 am-11:25 pm

2 stops17h 25m

$593

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 27 results
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Best time to book a flight from Washington, D.C. to London

Have a flexible travel schedule? Discover the best time to fly to London from Washington, D.C. 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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to London
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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.?

    London (YXU), located 5.3 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. to London. 0 airlines have flights to London from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to London should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. per day.

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

    A quick flight from Washington, D.C. to London, Ontario can take about 4h 42m. Air Canada provides one of the quickest options available for as low as $516. Washington, D.C. and London, Ontario are separated by a distance of 341 mi.

  • What are the most popular routes from Washington, D.C. to London, Ontario?

    The most popular route from Washington, D.C. to London, Ontario is Washington, D.C. Dulles Intl - London. You may also consider Washington, D.C. Reagan-National - London or Baltimore/Washington - London.

  • Can I find deals for flights from Washington, D.C. to London that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to London?

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

  • Can I find deals for business class flights from Washington, D.C. to London?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to London

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