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$485+ 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 12/20. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YXU
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
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 November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$593
(Air Canada)

One-way from

$485
(United Airlines)
Provider with most accurate pricing for Washington, D.C. (WAS)-London flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-London flights.
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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 November 6, 2025.

This Air Canada deal was found by Cheapflights users on 11/5. 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 12/218:40 pmDCA - YXU
1 stop12h 06mAir Canada
Sun 12/285:10 amYXU - DCA
1 stop3h 45mAir Canada
Deal found 11/5$617
This Air Canada deal was found by Cheapflights users on 11/5. 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 12/219:00 amIAD - YXU
1 stop8h 05mAir Canada
Sun 12/285:10 amYXU - IAD
1 stop10h 36mAir Canada
Deal found 11/5$640
This Air Canada deal was found by Cheapflights users on 11/6. 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.
Mon 12/228:40 pmDCA - YXU
1 stop12h 06mAir Canada
Mon 12/295:40 pmYXU - DCA
1 stop4h 55mAir Canada
Deal found 11/6$649
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Sun 12/216:00 amIAD - YXU
2 stops11h 05mUnited Airlines
Sun 12/285:10 amYXU - IAD
1 stop10h 36mUnited Airlines
Deal found 11/5$736
This Air Canada deal was found by Cheapflights users on 11/6. 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.
Mon 12/2210:06 pmIAD - YXU
1 stop10h 40mAir Canada
Mon 12/295:10 amYXU - IAD
1 stop10h 36mAir Canada
Deal found 11/6$841
This United Airlines deal was found by Cheapflights users on 11/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:50 pmDCA - YXU
1 stop13h 56mUnited Airlines
Mon 12/295:10 amYXU - DCA
2 stops15h 49mUnited Airlines
Deal found 11/6$857
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Sun 12/218:10 pmDCA - YXU
2 stops20h 55mUnited Airlines
Sun 12/285:10 amYXU - DCA
1 stop3h 45mUnited Airlines
Deal found 11/5$889
This United Airlines deal was found by Cheapflights users on 11/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2210:06 pmIAD - YXU
1 stop10h 40mUnited Airlines
Mon 12/299:25 amYXU - IAD
2 stops13h 41mUnited Airlines
Deal found 11/6$930
This United Airlines deal was found by Cheapflights users on 11/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:44 amBWI - YXU
2 stops22h 02mUnited Airlines
Sun 12/289:25 amYXU - BWI
2 stops12h 01mUnited Airlines
Deal found 11/6$1,008
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Sat 12/205:19 pmBWI - YXU
2 stops15h 27mUnited Airlines
Sat 12/279:25 amYXU - BWI
2 stops24h 23mUnited Airlines
Deal found 11/5$1,085
This Air Canada deal was found by Cheapflights users on 11/6. 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.
Wed 11/194:30 pmIAD - YXU
1 stop4h 51mAir Canada
Sat 11/225:40 pmYXU - IAD
1 stop3h 40mAir Canada
Deal found 11/6$1,240
This Air Canada deal was found by Cheapflights users on 11/6. 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.
Wed 11/199:40 amDCA - YXU
1 stop11h 41mAir Canada
Sat 11/225:40 pmYXU - DCA
1 stop4h 55mAir Canada
Deal found 11/6$1,264

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 November 6, 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

Tue 4/7

4:30 pm-9:18 pm

1 stop4h 48m

London

Tue 4/14

9:25 am-3:39 pm

1 stop6h 14m

$594

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

Wed 1/14

6:20 am-6:34 am

3 stops24h 14m

London

Fri 1/16

7:30 am-11:17 am

2 stops27h 47m

$617

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Tue 4/7

9:40 am-9:18 pm

1 stop11h 38m

London

Tue 4/14

5:40 pm-10:39 pm

1 stop4h 59m

$617

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sun 12/21

8:40 pm-8:46 am

1 stop12h 06m

London

Sun 12/28

5:10 am-8:55 am

1 stop3h 45m

$617

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 12/21

9:00 am-5:05 pm

1 stop8h 05m

London

Sun 12/28

5:10 am-3:46 pm

1 stop10h 36m

$640

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Mon 12/22

8:40 pm-8:46 am

1 stop12h 06m

London

Mon 12/29

5:40 pm-10:35 pm

1 stop4h 55m

$649

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 4/7

12:40 pm-5:03 pm

1 stop4h 23m

London

Tue 4/14

5:10 am-1:01 pm

2 stops7h 51m

$685

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 1/14

12:35 pm-5:05 pm

1 stop4h 30m

London

Fri 1/16

9:25 am-4:13 pm

2 stops6h 48m

$685

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Wed 1/14

6:00 am-5:05 pm

2 stops11h 05m

London

Fri 1/16

5:10 am-8:55 am

1 stop3h 45m

$689

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Tue 4/7

11:00 am-9:18 pm

2 stops10h 18m

London

Tue 4/14

5:40 pm-10:39 pm

1 stop4h 59m

$689

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 29 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 November.
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 $207). 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 48m. Air Canada provides one of the quickest options available for as low as $594. Washington, D.C. and London, Ontario are separated by a distance of 341 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. Reagan-National - London or Washington, D.C. Dulles Intl - 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 $207). 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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