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$532+ 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 12/27. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YXU
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap flight deals from Washington, D.C. to London

Best flights from Washington, D.C. to London
Discover carefully curated flight deals from Washington, D.C. to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 21, 2025.

This Mytrip deal was found by Cheapflights users on 12/19. 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.
Mon 2/24:44 pmBWI - YXU
3 stops37h 51mMultiple Airlines
Mon 2/98:10 pmYXU - BWI
3 stops27h 37mMultiple Airlines
Deal found 12/19$581
This Air Canada deal was found by Cheapflights users on 12/19. 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 5/36:59 amDCA - YXU
1 stop4h 44mAir Canada
Wed 5/66:10 pmYXU - DCA
1 stop4h 18mAir Canada
Deal found 12/19$605
This United Airlines deal was found by Cheapflights users on 12/18. 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.
Thu 1/2210:05 amBWI - YXU
2 stops11h 16mUnited Airlines
Mon 1/265:10 amYXU - BWI
2 stops16h 11mUnited Airlines
Deal found 12/18$862
This Air Canada deal was found by Cheapflights users on 12/20. 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 4/214:30 pmIAD - YXU
1 stop4h 48mAir Canada
Fri 4/249:25 amYXU - IAD
1 stop6h 14mAir Canada
Deal found 12/20$605
This Air Canada deal was found by Cheapflights users on 12/18. 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 1/254:30 pmIAD - YXU
1 stop4h 50mAir Canada
Wed 1/289:50 amYXU - IAD
1 stop5h 56mAir Canada
Deal found 12/18$605
This Air Canada deal was found by Cheapflights users on 12/19. 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 2/24:30 pmIAD - YXU
1 stop4h 50mAir Canada
Mon 2/99:25 amYXU - IAD
1 stop6h 24mAir Canada
Deal found 12/19$605
This Air Canada deal was found by Cheapflights users on 12/20. 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 2/312:55 pmDCA - YXU
2 stops8h 25mAir Canada
Tue 2/105:40 pmYXU - DCA
1 stop4h 55mAir Canada
Deal found 12/20$610
This United Airlines deal was found by Cheapflights users on 12/20. 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 4/156:05 amBWI - YXU
2 stops15h 13mUnited Airlines
Fri 4/175:10 amYXU - BWI
2 stops16h 13mUnited Airlines
Deal found 12/20$862
This Air Canada deal was found by Cheapflights users on 12/18. 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 1/2512:55 pmDCA - YXU
2 stops8h 25mAir Canada
Wed 1/285:40 pmYXU - DCA
1 stop4h 55mAir Canada
Deal found 12/18$610
This United Airlines deal was found by Cheapflights users on 12/19. 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.
Mon 2/210:05 amBWI - YXU
2 stops11h 15mUnited Airlines
Mon 2/99:25 amYXU - BWI
2 stops28h 46mUnited Airlines
Deal found 12/19$897
This Air Canada deal was found by Cheapflights users on 12/19. 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 1/124:30 pmIAD - YXU
1 stop4h 50mAir Canada
Mon 1/199:50 amYXU - IAD
1 stop5h 56mAir Canada
Deal found 12/19$637
This Mytrip deal was found by Cheapflights users on 12/19. 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.
Sat 1/39:09 pmBWI - YXU
2 stops33h 25mMultiple Airlines
Thu 1/88:10 pmYXU - BWI
3 stops27h 26mMultiple Airlines
Deal found 12/19$2,247

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 December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$581
(Mytrip)

One-way from

$532
(United Airlines)
Provider with most accurate pricing for Washington, D.C. (WAS)-London flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-London flights.
Search Deals
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 December 21, 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

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

Mon 2/2

4:44 pm-6:35 am

3 stops37h 51m

London

Mon 2/9

8:10 pm-11:47 pm

3 stops27h 37m

$581

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sun 5/3

6:59 am-11:43 am

1 stop4h 44m

London

Wed 5/6

6:10 pm-10:28 pm

1 stop4h 18m

$605

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 4/21

4:30 pm-9:18 pm

1 stop4h 48m

London

Fri 4/24

9:25 am-3:39 pm

1 stop6h 14m

$605

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 1/25

4:30 pm-9:20 pm

1 stop4h 50m

London

Wed 1/28

9:50 am-3:46 pm

1 stop5h 56m

$605

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Mon 2/2

4:30 pm-9:20 pm

1 stop4h 50m

London

Mon 2/9

9:25 am-3:49 pm

1 stop6h 24m

$605

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Tue 2/3

12:55 pm-9:20 pm

2 stops8h 25m

London

Tue 2/10

5:40 pm-10:35 pm

1 stop4h 55m

$610

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sun 1/25

12:55 pm-9:20 pm

2 stops8h 25m

London

Wed 1/28

5:40 pm-10:35 pm

1 stop4h 55m

$610

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Mon 1/12

4:30 pm-9:20 pm

1 stop4h 50m

London

Mon 1/19

9:50 am-3:46 pm

1 stop5h 56m

$637

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

Thu 1/22

10:05 am-9:21 pm

2 stops11h 16m

London

Mon 1/26

5:10 am-9:21 pm

2 stops16h 11m

$862

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

Wed 4/15

6:05 am-9:18 pm

2 stops15h 13m

London

Fri 4/17

5:10 am-9:23 pm

2 stops16h 13m

$862

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 26 results
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Compare providers for flights from Washington, D.C. to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to London in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C.-London, Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-London, Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C.-London, Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-London, Ontario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-London, Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

What is the cheapest month to book a flight from Washington, D.C. to London, Ontario?

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to London, Ontario (average of $98). Flying from Washington, D.C. to London, Ontario in October is currently the most expensive (average of $205). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 $605. 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 Baltimore/Washington - London. You may also consider Washington, D.C. Dulles Intl - London or Washington, D.C. Reagan-National - 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.

  • What is the cheapest month to book a flight from Washington, D.C. to London, Ontario?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to London, Ontario (average of $98). Flying from Washington, D.C. to London, Ontario in October is currently the most expensive (average of $205). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Washington, D.C. to London

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