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Washington, D.C.

$329+ 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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — WAS
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap 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 July 30, 2025.

Round-trip from

$504
(Mytrip)

One-way from

$329
(Air Canada)
From London to Washington, D.C. (WAS)
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One-way flight from London to Washington, D.C. (WAS)
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Find 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 July 30, 2025.

This Mytrip deal was found by Cheapflights users on 7/29. 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.
Fri 9/128:00 pmYXU - BWI
2 stops19h 25mMultiple Airlines
Fri 9/1912:00 pmBWI - YXU
2 stops17h 12mMultiple Airlines
Deal found 7/29$504
This Mytrip deal was found by Cheapflights users on 7/30. 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.
Sat 9/138:00 pmYXU - DCA
2 stops12h 59mMultiple Airlines
Sat 9/206:00 amDCA - YXU
3 stops23h 12mMultiple Airlines
Deal found 7/30$533
This Mytrip deal was found by Cheapflights users on 7/30. 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.
Sat 9/138:00 pmYXU - IAD
2 stops13h 38mMultiple Airlines
Sat 9/202:25 pmIAD - YXU
2 stops14h 47mMultiple Airlines
Deal found 7/30$533
This Air Canada deal was found by Cheapflights users on 7/29. 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 9/39:55 amYXU - IAD
1 stop3h 43mAir Canada
Mon 9/810:20 amIAD - YXU
1 stop4h 57mAir Canada
Deal found 7/29$546
This Flightnetwork deal was found by Cheapflights users on 7/30. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/133:50 pmYXU - DCA
1 stop3h 54mAir Canada
Sat 9/2011:00 amDCA - YXU
1 stop4h 17mAir Canada
Deal found 7/30$625
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Fri 9/126:10 amYXU - BWI
2 stops7h 38mUnited Airlines
Fri 9/196:40 pmBWI - YXU
2 stops20h 37mUnited Airlines
Deal found 7/29$690
This United Airlines deal was found by Cheapflights users on 7/28. 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 11/165:40 pmYXU - DCA
1 stop4h 55mUnited Airlines
Sun 11/2310:30 amDCA - YXU
2 stops10h 51mUnited Airlines
Deal found 7/28$780

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 July 30, 2025.
Use the filters below to find and compare flights from London to Washington, D.C. that are best for you.

Fly from

London

Fly to

Washington, D.C.

Route

Depart

Return

Price

LondonBaltimore

YXU - BWI

YXUBWI

London

Fri 9/12

8:00 pm-3:25 pm

2 stops19h 25m

Baltimore/Washington

Fri 9/19

12:00 pm-5:12 am

2 stops17h 12m

$504

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sat 9/13

8:00 pm-8:59 am

2 stops12h 59m

Washington, D.C. Reagan-National

Sat 9/20

6:00 am-5:12 am

3 stops23h 12m

$533

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sat 9/13

8:00 pm-9:38 am

2 stops13h 38m

Washington, D.C. Dulles Intl

Sat 9/20

2:25 pm-5:12 am

2 stops14h 47m

$533

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 9/3

9:55 am-1:38 pm

1 stop3h 43m

Washington, D.C. Dulles Intl

Mon 9/8

10:20 am-3:17 pm

1 stop4h 57m

$546

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sat 9/13

3:50 pm-7:44 pm

1 stop3h 54m

Washington, D.C. Reagan-National

Sat 9/20

11:00 am-3:17 pm

1 stop4h 17m

$625

LondonBaltimore

YXU - BWI

YXUBWI

London

Fri 9/12

6:10 am-1:48 pm

2 stops7h 38m

Baltimore/Washington

Fri 9/19

6:40 pm-3:17 pm

2 stops20h 37m

$690

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sun 11/16

5:40 pm-10:35 pm

1 stop4h 55m

Washington, D.C. Reagan-National

Sun 11/23

10:30 am-9:21 pm

2 stops10h 51m

$780

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sat 9/13

6:10 am-11:45 am

1 stop5h 35m

$329

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sat 9/13

3:50 pm-7:44 pm

1 stop3h 54m

$336

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sat 9/13

10:00 am-9:05 pm

2 stops11h 05m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 13 results
1
2

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.

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

Currently, August is the cheapest month in which you can book a flight from London, Ontario to Washington, D.C. (average of $241). Flying from London, Ontario to Washington, D.C. in March is currently the most expensive (average of $290). 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.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated July 30, 2025.
Peruse reviews from past customers who have flown with United Airlines and Air Canada from London to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,896 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,896 reviews
United Airlines
7.4
Good
8,896 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Air Canada
7.1
Good
9,837 reviews
United Airlines
7.4
Good
8,896 reviews

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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.

  • What are the cheapest airlines flying from London, Ontario to Washington, D.C. round-trip?

    Cheapflights users have booked flights from London, Ontario to Washington, D.C. round-trip from $546. Another airline that can offer you cheap pricing is United Airlines.

  • 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.

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

    Currently, August is the cheapest month in which you can book a flight from London, Ontario to Washington, D.C. (average of $241). Flying from London, Ontario to Washington, D.C. in March is currently the most expensive (average of $290). 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

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Easton
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Bowie

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