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$301+ 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YXU
Jun 17 — Jun 241
Wed 6/17
Wed 6/24
1 adult, Economy
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Cheap 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 May 18, 2026.

This Gotogate deal was found by Cheapflights users on 5/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/259:55 am
IAD
-
YXU
1 stop5h 02m
Air Canada
Wed 7/13:30 pm
YXU
-
IAD
1 stop4h 54m
Air Canada
Deal found 5/15$575
This Mytrip deal was found by Cheapflights users on 5/15. 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.
Thu 6/259:55 am
IAD
-
YXU
1 stop5h 02m
Multiple Airlines
Wed 7/18:40 pm
YXU
-
IAD
2 stops18h 44m
Multiple Airlines
Deal found 5/15$655
This Air Canada deal was found by Cheapflights users on 5/15. 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 5/296:59 am
DCA
-
YXU
1 stop4h 44m
Air Canada
Tue 6/25:10 am
YXU
-
DCA
1 stop3h 43m
Air Canada
Deal found 5/15$687
This Air Canada deal was found by Cheapflights users on 5/15. 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.
Wed 6/34:05 pm
IAD
-
YXU
1 stop5h 33m
Air Canada
Sat 6/63:30 pm
YXU
-
IAD
1 stop4h 59m
Air Canada
Deal found 5/15$687
This Air Canada deal was found by Cheapflights users on 5/16. 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.
Mon 6/1512:45 pm
DCA
-
YXU
2 stops8h 53m
Air Canada
Sun 6/215:10 am
YXU
-
DCA
2 stops6h 50m
Air Canada
Deal found 5/16$697
This Air Canada deal was found by Cheapflights users on 5/13. 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.
Mon 6/16:59 am
DCA
-
YXU
1 stop7h 59m
Air Canada
Sun 6/75:10 am
YXU
-
DCA
1 stop3h 43m
Air Canada
Deal found 5/13$712
This Air Canada deal was found by Cheapflights users on 5/13. 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.
Fri 5/299:55 am
IAD
-
YXU
1 stop7h 38m
Air Canada
Tue 6/23:30 pm
YXU
-
IAD
1 stop4h 59m
Air Canada
Deal found 5/13$712
This Air Canada deal was found by Cheapflights users on 5/17. 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.
Wed 7/811:00 am
DCA
-
YXU
1 stop3h 55m
Air Canada
Sun 7/126:20 pm
YXU
-
DCA
1 stop4h 11m
Air Canada
Deal found 5/17$750
This United Airlines deal was found by Cheapflights users on 5/16. 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 9/2511:00 am
DCA
-
YXU
1 stop3h 55m
United Airlines
Sun 9/276:20 pm
YXU
-
DCA
1 stop4h 14m
United Airlines
Deal found 5/16$764
This Air Canada deal was found by Cheapflights users on 5/13. 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.
Sat 6/139:55 am
IAD
-
YXU
1 stop5h 03m
Air Canada
Wed 6/1710:05 am
YXU
-
IAD
1 stop5h 24m
Air Canada
Deal found 5/13$773
This Air Canada deal was found by Cheapflights users on 5/17. 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.
Thu 7/98:40 pm
DCA
-
YXU
1 stop12h 40m
Air Canada
Sun 7/126:20 pm
YXU
-
DCA
1 stop4h 11m
Air Canada
Deal found 5/17$775
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/127:49 am
IAD
-
YXU
2 stops45h 31m
Multiple Airlines
Fri 7/316:10 am
YXU
-
IAD
1 stop12h 00m
Multiple Airlines
Deal found 5/13$778

Find 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 May 18, 2026.

Round-trip from

$575
(Gotogate)

One-way from

$301
(Air Canada)
From Washington, D.C. (WAS) to London
Search Deals
One-way flight from Washington, D.C. (WAS) to London
Search Deals

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 May 18, 2026.
Use the filters below to find and compare flights from Washington, D.C. to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Fri 5/29

6:59 am-11:43 am

1 stop4h 44m

London

Tue 6/2

6:10 pm-10:28 pm

1 stop4h 18m

$687

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 6/3

9:55 am-2:58 pm

1 stop5h 03m

London

Sat 6/6

10:05 am-3:29 pm

1 stop5h 24m

$687

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Mon 6/15

12:45 pm-9:38 pm

2 stops8h 53m

London

Sun 6/21

5:10 am-12:00 pm

2 stops6h 50m

$697

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Mon 6/1

6:59 am-2:58 pm

1 stop7h 59m

London

Sun 6/7

5:10 am-8:53 am

1 stop3h 43m

$712

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Fri 5/29

9:55 am-5:33 pm

1 stop7h 38m

London

Tue 6/2

3:30 pm-8:29 pm

1 stop4h 59m

$712
Quickest round-trip

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Wed 7/8

11:00 am-2:55 pm

1 stop3h 55m

London

Sun 7/12

6:20 pm-10:31 pm

1 stop4h 11m

$750

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Fri 9/25

11:00 am-2:55 pm

1 stop3h 55m

London

Sun 9/27

6:20 pm-10:34 pm

1 stop4h 14m

$764

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Thu 7/9

8:40 pm-9:20 am

1 stop12h 40m

London

Sun 7/12

6:20 pm-10:31 pm

1 stop4h 11m

$775

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 6/14

4:05 pm-9:38 pm

1 stop5h 33m

London

Sun 6/21

10:05 am-3:24 pm

1 stop5h 19m

$794

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 6/28

10:27 pm-2:57 pm

2 stops16h 30m

London

Sun 7/5

10:05 am-3:24 pm

1 stop5h 19m

$804

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/14

Showing 1-10 of 35 resultsSorted by cheapest first
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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 44m. Air Canada provides one of the quickest options available for as low as $687. Washington, D.C. and London, Ontario are separated by a distance of 359 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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. Reagan-National - London. You may also consider Washington, D.C. Dulles Intl - 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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