Find flights
When to book
FAQs

Cheap flights from London, ON to Washington, D.C. from C$ 454

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — WAS
18 Nov — 25 Nov1
1 adult
1 adult, Economy

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

Enter your travel dates to find the best prices.

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 19 October 2025.

Fri 21/115:15 a.m.YXU - DCA
2 stops7h 04mAir Canada
Fri 28/1112:55 p.m.DCA - YXU
2 stops8h 26mAir Canada
Deal found 17/10C$ 603
Fri 21/119:25 a.m.YXU - IAD
1 stop6h 21mAir Canada
Fri 28/114:30 p.m.IAD - YXU
1 stop4h 51mAir Canada
Deal found 17/10C$ 621
Fri 21/118:10 p.m.YXU - BWI
2 stops27h 48mMultiple Airlines
Fri 28/118:35 a.m.BWI - YXU
1 stop31h 00mMultiple Airlines
Deal found 17/10C$ 1,057
Mon 20/109:55 a.m.YXU - IAD
1 stop3h 43mUnited Airlines
Tue 28/1012:35 p.m.IAD - YXU
1 stop4h 31mUnited Airlines
Deal found 17/10C$ 1,294
Mon 20/103:40 p.m.YXU - DCA
1 stop6h 54mUnited Airlines
Tue 28/1010:05 a.m.DCA - YXU
2 stops7h 01mUnited Airlines
Deal found 17/10C$ 1,343
Mon 20/103:40 p.m.YXU - DCA
2 stops16h 41mMultiple Airlines
Tue 28/1011:05 a.m.DCA - YXU
2 stops10h 16mMultiple Airlines
Deal found 17/10C$ 1,400
Fri 24/106:15 a.m.YXU - BWI
2 stops7h 53mUnited Airlines
Fri 31/106:15 a.m.BWI - YXU
2 stops10h 51mUnited Airlines
Deal found 17/10C$ 1,491
Mon 20/103:40 p.m.YXU - BWI
2 stops18h 15mUnited Airlines
Tue 28/106:15 a.m.BWI - YXU
2 stops15h 06mUnited Airlines
Deal found 17/10C$ 1,632
Fri 24/106:00 a.m.YXU - BWI
3 stops22h 30mMultiple Airlines
Fri 31/108:21 p.m.BWI - YXU
3 stops47h 51mMultiple Airlines
Deal found 17/10C$ 2,341
Mon 20/108:00 p.m.YXU - BWI
3 stops24h 23mMultiple Airlines
Tue 28/101:35 p.m.BWI - YXU
3 stops29h 37mMultiple Airlines
Deal found 17/10C$ 2,904
Mon 20/108:00 p.m.YXU - IAD
2 stops19h 06mMultiple Airlines
Tue 28/103:00 p.m.IAD - YXU
3 stops28h 12mMultiple Airlines
Deal found 17/10C$ 3,249
Mon 20/108:00 p.m.YXU - DCA
3 stops26h 51mWestJet
Tue 28/101:50 p.m.DCA - YXU
3 stops29h 22mWestJet
Deal found 17/10C$ 3,375

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 19 October 2025.

Round-trip from

C$ 603

One-way from

C$ 454
Air Canada
  • Air Canada
  • 21/11-28/11
  • 4 total stops
  • 15h 30m total
  • London to Washington, D.C.
Search Deals
United Airlines
  • United Airlines
  • 1/12
  • 2 total stops
  • 13h 33m total
  • London to Washington, D.C.
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 629,999 searches. Data last updated 19 October 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

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Fri 21/11

5:15 a.m.-12:19 p.m.

2 stops7h 04m

Washington, D.C. Reagan-National

Fri 28/11

12:55 p.m.-9:21 p.m.

2 stops8h 26m

C$ 603

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Fri 21/11

9:25 a.m.-3:46 p.m.

1 stop6h 21m

Washington, D.C. Dulles Intl

Fri 28/11

4:30 p.m.-9:21 p.m.

1 stop4h 51m

C$ 621

LondonBaltimore

YXU - BWI

YXUBWI

London

Fri 21/11

8:10 p.m.-11:58 p.m.

2 stops27h 48m

Baltimore/Washington

Fri 28/11

8:35 a.m.-3:35 p.m.

1 stop31h 00m

C$ 1,057

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Fri 21/11

9:25 a.m.-3:50 p.m.

3 stops30h 25m

Washington, D.C. Dulles Intl

Fri 28/11

6:00 p.m.-5:05 p.m.

2 stops23h 05m

C$ 5,334

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 1/12

9:25 a.m.-10:58 p.m.

2 stops13h 33m

C$ 454

LondonBaltimore

YXU - BWI

YXUBWI

London

Mon 1/12

5:40 p.m.-9:59 a.m.

2 stops16h 19m

C$ 482

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Mon 1/12

5:40 p.m.-10:35 p.m.

1 stop4h 55m

C$ 510

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/10

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, February is the cheapest month in which you can book a flight from London, Ontario to Washington, D.C. (average of C$ 185). Flying from London, Ontario to Washington, D.C. in January is currently the most expensive (average of C$ 275). 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 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 8.6 km from London’s city centre.

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

    Air Canada can get you from London, Ontario to Washington, D.C. in just under 7h 04m. Your travel time can differ by up to . The distance from London, Ontario to Washington, D.C. is about 578 km.

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

    When deciding which route to take from London, Ontario to Washington, D.C. consider London - Washington, D.C. Dulles Intl, London - Washington, D.C. Reagan-National or London - Baltimore/Washington as they are the most popular.

  • 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, February is the cheapest month in which you can book a flight from London, Ontario to Washington, D.C. (average of C$ 185). Flying from London, Ontario to Washington, D.C. in January is currently the most expensive (average of C$ 275). 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

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Hanover
Reston
Fairfax
Ellicott City
Oxon Hill
Gaithersburg
Herndon
Arlington
Alexandria
Manassas
Fredericksburg
Rockville

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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Washington, D.C.?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Washington, D.C. from London today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from London to Washington, D.C.?

Millions of users choose and trust Cheapflights to book the best flight deals from London to Washington, D.C. for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from London to Washington, D.C. with no change fees?

Yes! Cheapflights helps users easily find flights from London to Washington, D.C. with no change fees.

Can Cheapflights notify me if prices for flights from London to Washington, D.C. become cheaper?

Not ready to book yet? You can track prices for flights from London to Washington, D.C. on Cheapflights with our Price Alert feature and get notified when better prices are available.

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.