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$650+ Cheap flights from Washington, D.C. (WAS) to London, ON (YXU)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YXU
May 17 — May 241
Sat 5/17
Sat 5/24
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 May 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
2 stars

Round-trip from

$650
(Air Canada)
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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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 May 12, 2025.

This Air Canada deal was found by Cheapflights users on 5/10. 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 6/102:25 pmIAD - YXU
1 stop7h 04mMultiple Airlines
Sun 6/156:15 amYXU - IAD
1 stop5h 24mMultiple Airlines
Deal found 5/10$650
This Air Canada deal was found by Cheapflights users on 5/10. 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 6/1011:00 amDCA - YXU
1 stop3h 59mAir Canada
Sun 6/159:55 amYXU - DCA
1 stop12h 33mAir Canada
Deal found 5/10$661
This Air Canada deal was found by Cheapflights users on 5/11. 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 6/910:18 pmIAD - YXU
2 stops16h 41mAir Canada
Mon 6/163:35 pmYXU - IAD
1 stop22h 06mAir Canada
Deal found 5/11$670
This United Airlines deal was found by Cheapflights users on 5/11. 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 6/255:36 pmIAD - YXU
2 stops21h 21mUnited Airlines
Wed 7/26:15 amYXU - IAD
2 stops16h 55mUnited Airlines
Deal found 5/11$721
This United Airlines deal was found by Cheapflights users on 5/11. 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 6/254:22 pmBWI - YXU
2 stops22h 35mUnited Airlines
Wed 7/26:15 amYXU - BWI
2 stops22h 55mUnited Airlines
Deal found 5/11$743
This Mytrip deal was found by Cheapflights users on 5/10. 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.
Tue 6/107:17 amBWI - YXU
3 stops45h 57mMultiple Airlines
Sun 6/158:00 pmYXU - BWI
2 stops33h 43mMultiple Airlines
Deal found 5/10$799
This United Airlines deal was found by Cheapflights users on 5/11. 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 6/256:00 amDCA - YXU
2 stops8h 57mUnited Airlines
Wed 7/25:45 pmYXU - DCA
1 stop4h 42mUnited Airlines
Deal found 5/11$838
This United deal was found by Cheapflights users on 5/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1011:00 amDCA - YXU
1 stop3h 59mMultiple Airlines
Sun 6/156:15 amYXU - DCA
2 stops5h 46mMultiple Airlines
Deal found 5/10$855
This WestJet deal was found by Cheapflights users on 5/12. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/236:45 pmIAD - YXU
1 stop10h 29mWestJet
Mon 5/266:00 amYXU - IAD
1 stop11h 54mWestJet
Deal found 5/12$1,466

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 12, 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 6/10

2:25 pm-9:29 pm

1 stop7h 04m

London

Sun 6/15

6:15 am-11:39 am

1 stop5h 24m

$650

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Tue 6/10

11:00 am-2:59 pm

1 stop3h 59m

London

Sun 6/15

9:55 am-10:28 pm

1 stop12h 33m

$661

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Mon 6/9

10:18 pm-2:59 pm

2 stops16h 41m

London

Mon 6/16

3:35 pm-1:41 pm

1 stop22h 06m

$670

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 6/25

5:36 pm-2:57 pm

2 stops21h 21m

London

Wed 7/2

6:15 am-11:10 pm

2 stops16h 55m

$721

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

Wed 6/25

4:22 pm-2:57 pm

2 stops22h 35m

London

Wed 7/2

6:15 am-5:10 am

2 stops22h 55m

$743

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

Tue 6/10

7:17 am-5:14 am

3 stops45h 57m

London

Sun 6/15

8:00 pm-5:43 am

2 stops33h 43m

$799

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Wed 6/25

6:00 am-2:57 pm

2 stops8h 57m

London

Wed 7/2

5:45 pm-10:27 pm

1 stop4h 42m

$838

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Tue 6/10

11:00 am-2:59 pm

1 stop3h 59m

London

Sun 6/15

6:15 am-12:01 pm

2 stops5h 46m

$855

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Fri 5/23

6:45 pm-5:14 am

1 stop10h 29m

London

Mon 5/26

6:00 am-5:54 pm

1 stop11h 54m

$1,466

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/10

  • Most accurate provider: When it comes to deals on Washington, D.C.-London, Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-London, Ontario flight deals on Cheapflights vs. FlightHub >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 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 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 time of day to fly from WAS to YXU?

Find hourly flight availability from Washington, D.C. to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 12, 2025.

One of the essential ways to save on airfare from Washington, D.C. to London, Ontario is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 23% on airfare.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London, Ontario ranges from 2.8 - 3.9 inches per month. January is typically the wettest month, when rainfall can reach 3.9 in. March is typically the driest time to visit London, Ontario when rainfall is around 2.8 in.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated May 12, 2025.
To help decide which airline to fly from Washington, D.C. to London, see what other customers have to say about United Airlines, WestJet and Air Canada. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,724 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,724 reviews
United Airlines
7.4
Good
8,724 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
WestJet
7.2
Good
2,837 reviews
United Airlines
7.4
Good
8,724 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.0
Good
9,328 reviews
United Airlines
7.4
Good
8,724 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

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

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