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$370+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YXU
abr. 5 — abr. 121
sáb. 4/5
sáb. 4/12
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 marzo 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$408
(Kiwi.com)

One-way from

$370
(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 marzo 31, 2025.

This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
mié. 5/146:45 pmIAD - YXU
1 stop10h 29mWestJet
mié. 5/216:00 amYXU - IAD
1 stop11h 54mWestJet
Deal found 3/30$408
This Mytrip deal was found by Cheapflights users on 3/30. 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.
mié. 5/148:44 pmBWI - YXU
2 stops32h 30mMultiple Airlines
mié. 5/216:00 amYXU - BWI
3 stops24h 10mMultiple Airlines
Deal found 3/30$495
This Mytrip deal was found by Cheapflights users on 3/30. 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.
mié. 5/146:45 pmIAD - YXU
1 stop10h 29mMultiple Airlines
mié. 5/216:00 amYXU - IAD
2 stops29h 04mMultiple Airlines
Deal found 3/30$498
This Air Canada deal was found by Cheapflights users on 3/30. 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.
mié. 5/1411:00 amDCA - YXU
1 stop4h 04mAir Canada
mié. 5/213:45 pmYXU - DCA
1 stop3h 58mAir Canada
Deal found 3/30$743
This Air Canada deal was found by Cheapflights users on 3/30. 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.
jue. 5/2210:30 amIAD - YXU
1 stop4h 33mAir Canada
lun. 5/266:15 amYXU - IAD
1 stop5h 24mAir Canada
Deal found 3/30$743
This United Airlines deal was found by Cheapflights users on 3/30. 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.
mar. 7/1510:15 pmIAD - YXU
2 stops23h 12mUnited Airlines
mar. 7/226:15 amYXU - IAD
2 stops10h 10mUnited Airlines
Deal found 3/30$770
This United Airlines deal was found by Cheapflights users on 3/30. 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.
mar. 7/1511:00 amDCA - YXU
1 stop3h 57mUnited Airlines
mar. 7/223:35 pmYXU - DCA
1 stop4h 07mUnited Airlines
Deal found 3/30$784
This United deal was found by Cheapflights users on 3/30. 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.
jue. 5/226:40 amBWI - YXU
2 stops8h 23mUnited Airlines
lun. 5/266:15 amYXU - BWI
2 stops7h 42mUnited Airlines
Deal found 3/30$785
This United deal was found by Cheapflights users on 3/30. 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.
mar. 7/1511:00 amDCA - YXU
1 stop3h 57mMultiple Airlines
mar. 7/226:15 amYXU - DCA
2 stops9h 33mMultiple Airlines
Deal found 3/30$789

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 marzo 31, 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

mié. 5/14

6:45 pm-5:14 am

1 stop10h 29m

London

mié. 5/21

6:00 am-5:54 pm

1 stop11h 54m

$408

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

mié. 5/14

8:44 pm-5:14 am

2 stops32h 30m

London

mié. 5/21

6:00 am-6:10 am

3 stops24h 10m

$495

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

mié. 5/14

6:45 pm-5:14 am

1 stop10h 29m

London

mié. 5/21

6:00 am-11:04 am

2 stops29h 04m

$498

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

mié. 5/14

11:00 am-3:04 pm

1 stop4h 04m

London

mié. 5/21

3:45 pm-7:43 pm

1 stop3h 58m

$743

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

jue. 5/22

10:30 am-3:03 pm

1 stop4h 33m

London

lun. 5/26

6:15 am-11:39 am

1 stop5h 24m

$743

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

mar. 7/15

10:15 pm-9:27 pm

2 stops23h 12m

London

mar. 7/22

6:15 am-4:25 pm

2 stops10h 10m

$770

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

mar. 7/15

11:00 am-2:57 pm

1 stop3h 57m

London

mar. 7/22

3:35 pm-7:42 pm

1 stop4h 07m

$784

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

jue. 5/22

6:40 am-3:03 pm

2 stops8h 23m

London

lun. 5/26

6:15 am-1:57 pm

2 stops7h 42m

$785

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

mar. 7/15

11:00 am-2:57 pm

1 stop3h 57m

London

mar. 7/22

6:15 am-3:48 pm

2 stops9h 33m

$789

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

jue. 5/15

6:45 am-9:29 pm

2 stops14h 44m

$370

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

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 March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 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 marzo 31, 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 marzo 31, 2025.
United Airlines
7.4
Good
8,614 reviews

Comfort

7.3

Entertainment

7.0

Overall

7.4

Crew

8.1

Boarding

7.7

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
8,614 reviews
United Airlines
7.4
Good
8,614 reviews

Comfort

7.3

Entertainment

7.0

Overall

7.4

Crew

8.1

Boarding

7.7

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
2,789 reviews
United Airlines
7.4
Good
8,614 reviews

Comfort

7.3

Entertainment

7.0

Overall

7.4

Crew

8.1

Boarding

7.7

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
9,012 reviews
United Airlines
7.4
Good
8,614 reviews

Comfort

7.3

Entertainment

7.0

Overall

7.4

Crew

8.1

Boarding

7.7

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. 1 airline 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 Baltimore/Washington - 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.

See more FAQs

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Alternative routes for Washington, D.C. to London

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Washington, D.C. to London

Discover the top airline that operate flights from Washington, D.C. to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated marzo 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$264Average$560FlexibilityNo cancel feeOn-time67%
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