HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington, D.C.

$331+ Cheap flights from London, ON (YXU) to Washington, D.C. (WAS)

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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — WAS
Jun 21 — Jun 281
Sun 6/21
Sun 6/28
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from London to Washington, D.C. with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from London to Washington, D.C.

Cheapest flights from London to Washington, D.C.
Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 22, 2026.

This Air Canada deal was found by Cheapflights users on 5/20. 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.
Thu 7/235:10 am
YXU
-
DCA
2 stops6h 50m
Air Canada
Mon 7/2711:00 am
DCA
-
YXU
1 stop3h 55m
Air Canada
Deal found 5/20$460
This Air Canada deal was found by Cheapflights users on 5/21. 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 10/233:30 pm
YXU
-
DCA
1 stop4h 30m
Air Canada
Sat 10/2411:00 am
DCA
-
YXU
1 stop3h 55m
Air Canada
Deal found 5/21$521
This Air Canada deal was found by Cheapflights users on 5/21. 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 7/93:30 pm
YXU
-
IAD
1 stop4h 54m
Air Canada
Mon 7/134:20 pm
IAD
-
YXU
1 stop5h 20m
Air Canada
Deal found 5/21$542
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 7/25:10 am
YXU
-
DCA
1 stop3h 42m
Air Canada
Sun 7/511:00 am
DCA
-
YXU
1 stop3h 55m
Air Canada
Deal found 5/17$543
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.
Mon 6/155:10 am
YXU
-
DCA
1 stop3h 43m
Air Canada
Sun 6/218:40 pm
DCA
-
YXU
1 stop12h 37m
Air Canada
Deal found 5/17$572
This Air Canada deal was found by Cheapflights users on 5/19. 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 6/83:30 pm
YXU
-
IAD
1 stop4h 59m
Air Canada
Wed 6/109:55 am
IAD
-
YXU
1 stop5h 03m
Air Canada
Deal found 5/19$588
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.
Mon 6/153:30 pm
YXU
-
IAD
1 stop4h 59m
Air Canada
Sun 6/219:55 am
IAD
-
YXU
1 stop5h 02m
Air Canada
Deal found 5/17$596
This United Airlines deal was found by Cheapflights users on 5/19. 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 6/83:30 pm
YXU
-
IAD
1 stop4h 59m
United Airlines
Wed 6/106:33 am
IAD
-
YXU
2 stops8h 25m
United Airlines
Deal found 5/19$619
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 6/45:10 am
YXU
-
IAD
2 stops11h 09m
Air Canada
Sun 6/78:18 am
IAD
-
YXU
2 stops6h 40m
Air Canada
Deal found 5/17$622
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/156:10 pm
YXU
-
DCA
2 stops18h 13m
United Airlines
Sun 6/218:40 pm
DCA
-
YXU
1 stop12h 37m
United Airlines
Deal found 5/17$699
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/910:05 am
YXU
-
BWI
2 stops11h 21m
United Airlines
Sat 6/136:20 am
BWI
-
YXU
2 stops8h 38m
United Airlines
Deal found 5/17$797
This Mytrip deal was found by Cheapflights users on 5/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/235:55 pm
YXU
-
DCA
3 stops41h 21m
WestJet
Mon 7/271:30 pm
DCA
-
YXU
3 stops24h 20m
WestJet
Deal found 5/20$1,192

Find flight deals from London to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) to Washington, D.C. (WAS). 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 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$460
(Air Canada)

One-way from

$331
(United Airlines)
Provider with most accurate pricing for London-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for London-Washington, D.C. (WAS) flights.
Search Deals
From London to Washington, D.C. (WAS)
Search Deals
One-way flight from London to Washington, D.C. (WAS)
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Washington, D.C. 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 22, 2026.
Use the filters below to find and compare flights from London to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 7/23

5:10 am-12:00 pm

2 stops6h 50m

Washington, D.C. Reagan-National

Mon 7/27

12:40 pm-9:40 pm

2 stops9h 00m

$460

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Fri 10/23

3:30 pm-8:00 pm

1 stop4h 30m

Washington, D.C. Reagan-National

Sat 10/24

12:40 pm-9:40 pm

2 stops9h 00m

$521

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Thu 7/9

3:30 pm-8:24 pm

1 stop4h 54m

Washington, D.C. Dulles Intl

Mon 7/13

4:20 pm-9:40 pm

1 stop5h 20m

$542

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Thu 6/4

5:10 am-3:03 pm

2 stops9h 53m

Washington, D.C. Dulles Intl

Sun 6/7

9:55 am-2:58 pm

1 stop5h 03m

$546
Quickest round-trip

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 6/15

3:30 pm-8:29 pm

1 stop4h 59m

Washington, D.C. Dulles Intl

Sun 6/21

9:55 am-2:57 pm

1 stop5h 02m

$596

LondonBaltimore

YXU - BWI

YXUBWI

London

Tue 6/9

10:05 am-9:26 pm

2 stops11h 21m

Baltimore/Washington

Sat 6/13

6:20 am-2:58 pm

2 stops8h 38m

$797
Cheapest one-way

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Fri 7/3

6:20 pm-10:31 pm

1 stop4h 11m

$331

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Fri 7/3

10:05 am-3:24 pm

1 stop5h 19m

$331
Quickest one-way

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sun 7/5

5:10 am-8:52 am

1 stop3h 42m

$384

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sun 7/5

10:05 am-3:24 pm

1 stop5h 19m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/18

Showing 1-10 of 12 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on London, Ontario-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London, Ontario-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London, Ontario-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London, Ontario-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub 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 London, Ontario-Washington, D.C. 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 London to Washington, D.C.

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

    Most people fly from London (YXU) if they book a flight from London to Washington, D.C.. On average, London has 0 outbound flights to Washington, D.C. per day from 0 airlines. London is conveniently located just 5.3 mi from London’s city center.

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

    Departing from London, Ontario to Washington, D.C. will take you 6h 50m. London, Ontario and Washington, D.C. are separated by a distance of 359 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

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

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

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Tysons
Owings Mills
Springfield
Arlington
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Hanover
Laurel
Falls Church
Waldorf
Silver Spring
Largo
Clinton
Reston
Hunt Valley
Woodbridge

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to Reagan-National flights
Pearson Intl to Dulles Intl flights
Ottawa to Reagan-National flights
London to Dulles Intl flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.