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$253+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YXU
Aug 9 — Aug 161
Sun 8/9
Sun 8/16
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 July 10, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:00 pm
IAD
-
YXU
1 stop10h 20m
WestJet
Fri 8/286:10 am
YXU
-
IAD
1 stop12h 00m
WestJet
Deal found 7/8$581
This Kiwi.com deal was found by Cheapflights users on 7/6. 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.
Thu 8/208:39 pm
IAD
-
YXU
2 stops32h 41m
Multiple Airlines
Thu 8/278:40 pm
YXU
-
IAD
1 stop21h 30m
Multiple Airlines
Deal found 7/6$585
This Kiwi.com deal was found by Cheapflights users on 7/7. 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.
Fri 8/218:59 am
IAD
-
YXU
2 stops20h 21m
Multiple Airlines
Fri 8/286:10 am
YXU
-
IAD
1 stop12h 00m
Multiple Airlines
Deal found 7/7$590
This Kiwi.com deal was found by Cheapflights users on 7/9. 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.
Wed 8/127:48 am
IAD
-
YXU
2 stops21h 32m
Multiple Airlines
Mon 8/176:10 am
YXU
-
IAD
1 stop12h 00m
Multiple Airlines
Deal found 7/9$611
This Gotogate deal was found by Cheapflights users on 7/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/69:55 am
IAD
-
YXU
1 stop4h 55m
Air Canada
Fri 8/73:30 pm
YXU
-
IAD
1 stop4h 54m
Air Canada
Deal found 7/9$629
This Air Canada deal was found by Cheapflights users on 7/8. 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.
Sat 12/59:40 am
DCA
-
YXU
1 stop5h 02m
Air Canada
Wed 12/93:20 pm
YXU
-
DCA
1 stop4h 38m
Air Canada
Deal found 7/8$713
This Air Canada deal was found by Cheapflights users on 7/7. 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 10/139:55 am
IAD
-
YXU
1 stop5h 00m
Air Canada
Fri 10/163:30 pm
YXU
-
IAD
1 stop4h 55m
Air Canada
Deal found 7/7$713
This Gotogate deal was found by Cheapflights users on 7/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/611:00 am
DCA
-
YXU
1 stop3h 50m
Air Canada
Fri 8/75:40 am
YXU
-
DCA
2 stops6h 20m
Air Canada
Deal found 7/9$715
This Air Canada deal was found by Cheapflights users on 7/9. 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.
Thu 10/86:00 am
DCA
-
YXU
2 stops8h 55m
Air Canada
Mon 10/125:40 am
YXU
-
DCA
2 stops6h 20m
Air Canada
Deal found 7/9$727
This Air Canada deal was found by Cheapflights users on 7/9. 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 10/96:59 am
DCA
-
YXU
1 stop10h 46m
Air Canada
Tue 10/136:20 pm
YXU
-
DCA
1 stop4h 14m
Air Canada
Deal found 7/9$737
This Air Canada deal was found by Cheapflights users on 7/9. 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 10/96:59 am
DCA
-
YXU
1 stop10h 46m
Air Canada
Mon 10/125:40 am
YXU
-
DCA
2 stops6h 20m
Air Canada
Deal found 7/9$742
This Air Canada deal was found by Cheapflights users on 7/6. 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 8/2011:00 am
DCA
-
YXU
1 stop3h 50m
Air Canada
Thu 8/276:20 pm
YXU
-
DCA
1 stop4h 11m
Air Canada
Deal found 7/6$820

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 July 10, 2026.

Round-trip from

$581
(Kiwi.com)

One-way from

$253
(Kiwi.com)
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 July 10, 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

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Thu 8/20

8:39 pm-5:20 am

2 stops32h 41m

London

Thu 8/27

8:40 pm-6:10 pm

1 stop21h 30m

$585

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Fri 8/21

7:00 pm-5:20 am

1 stop10h 20m

London

Fri 8/28

8:40 pm-5:14 pm

2 stops20h 34m

$682

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Thu 10/8

11:00 am-2:55 pm

1 stop3h 55m

London

Mon 10/12

6:20 pm-10:34 pm

1 stop4h 14m

$713
Quickest round-trip

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Fri 8/21

11:00 am-2:50 pm

1 stop3h 50m

London

Fri 8/28

6:20 pm-10:31 pm

1 stop4h 11m

$713

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sat 8/8

11:00 am-2:50 pm

1 stop3h 50m

London

Fri 8/14

6:20 pm-10:31 pm

1 stop4h 11m

$713

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Tue 10/13

11:00 am-2:55 pm

1 stop3h 55m

London

Fri 10/16

3:30 pm-8:00 pm

1 stop4h 30m

$713

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 10/13

9:55 am-2:55 pm

1 stop5h 00m

London

Fri 10/16

3:30 pm-8:25 pm

1 stop4h 55m

$713

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sat 12/5

4:30 pm-9:47 pm

1 stop5h 17m

London

Wed 12/9

3:20 pm-8:10 pm

1 stop4h 50m

$713

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sat 12/5

9:40 am-2:42 pm

1 stop5h 02m

London

Wed 12/9

5:30 am-12:19 pm

2 stops6h 49m

$718

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Wed 8/12

11:00 am-2:50 pm

1 stop3h 50m

London

Mon 8/17

5:40 am-12:00 pm

2 stops6h 20m

$826

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 42 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 3h 55m. Air Canada provides one of the quickest options available for as low as $713. 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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