Cheap flights from London, Ontario to Washington, D.C. from $247

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London, Ontario to Washington, D.C. departing on 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London, Ontario to Washington, D.C.

Cheap round-trip flights

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6:00 am - 4:30 amYXU-BWI
22h 30m2 stops
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11:56 am - 5:12 amBWI-YXU
17h 16m2 stops
Tue, Sep 30 - Tue, Oct 7
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6:00 am - 4:30 amYXU-BWI
22h 30m2 stops
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9:00 pm - 5:12 amBWI-YXU
32h 12m3 stops
Tue, Sep 30 - Tue, Oct 7
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8:00 pm - 4:30 amYXU-BWI
32h 30m3 stops
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9:00 pm - 5:12 amBWI-YXU
32h 12m3 stops
Tue, Sep 30 - Tue, Oct 7
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3:50 pm - 9:25 pmYXU-IAD
5h 35m1 stop
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3:36 pm - 9:27 pmIAD-YXU
5h 51m1 stop
Tue, Sep 30 - Tue, Oct 7
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10:00 am - 4:10 pmYXU-IAD
6h 10m1 stop
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8:16 am - 3:02 pmIAD-YXU
6h 46m2 stops
Tue, Sep 30 - Tue, Oct 7
Air Canada Logo
3:50 pm - 7:44 pmYXU-DCA
3h 54m1 stop
Air Canada Logo
11:00 am - 3:02 pmDCA-YXU
4h 02m1 stop
$670Air Canada
Find Deal
Tue, Sep 30 - Tue, Oct 7
United Airlines Logo
6:10 am - 2:08 pmYXU-BWI
7h 58m2 stops
United Airlines Logo
5:20 pm - 9:19 amBWI-YXU
15h 59m2 stops
$768United Airlines
Find Deal
Sat, Sep 27 - Sat, Sep 27
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6:00 am - 2:00 pmYXU-IAD
32h 00m3 stops
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4:05 am - 5:12 amIAD-YXU
25h 07m3 stops
$1,399
Find Deal
Tue, Sep 30 - Tue, Oct 7

momondo Fare Finder

 
Customize your flight search to find flights from London, Ontario 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, momondo users made 832,500 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from London, Ontario to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBaltimore

YXU - BWI

YXUBWI

London

Tue 9/30

6:00 am-4:30 am

2 stops22h 30m

Baltimore/Washington

Tue 10/7

11:56 am-5:12 am

2 stops17h 16m

$511

LondonBaltimore

YXU - BWI

YXUBWI

London

Tue 9/30

6:00 am-4:30 am

2 stops22h 30m

Baltimore/Washington

Tue 10/7

9:00 pm-5:12 am

3 stops32h 12m

$516

LondonBaltimore

YXU - BWI

YXUBWI

London

Tue 9/30

8:00 pm-4:30 am

3 stops32h 30m

Baltimore/Washington

Tue 10/7

9:00 pm-5:12 am

3 stops32h 12m

$522

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 9/30

3:50 pm-9:25 pm

1 stop5h 35m

Washington, D.C. Dulles Intl

Tue 10/7

3:36 pm-9:27 pm

1 stop5h 51m

$639

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 9/30

10:00 am-4:10 pm

1 stop6h 10m

Washington, D.C. Dulles Intl

Tue 10/7

8:16 am-3:02 pm

2 stops6h 46m

$659

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Tue 9/30

3:50 pm-7:44 pm

1 stop3h 54m

Washington, D.C. Reagan-National

Tue 10/7

11:00 am-3:02 pm

1 stop4h 02m

$670

LondonBaltimore

YXU - BWI

YXUBWI

London

Sat 9/27

6:10 am-2:08 pm

2 stops7h 58m

Baltimore/Washington

Sat 9/27

5:20 pm-9:19 am

2 stops15h 59m

$768

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 9/30

6:00 am-2:00 pm

3 stops32h 00m

Washington, D.C. Dulles Intl

Tue 10/7

4:05 am-5:12 am

3 stops25h 07m

$1,399

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 9/29

8:00 pm-7:55 pm

2 stops23h 55m

$247

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 9/29

8:00 pm-3:06 pm

3 stops43h 06m

$281

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from London, Ontario to Washington, D.C.

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from London to Washington, D.C.?

Air Canada and United Airlines are the most popular carriers operating from London to Washington, D.C.

What airlines fly to Washington, D.C.?

Air Canada, United Airlines and WestJet are the top three most popular airlines that fly to Washington, D.C. from London, Ontario according to our data. Air Canada is the first choice among our users, with 71% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

When to book flights from London, Ontario to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from London, Ontario to Washington, D.C. according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London, Ontario to Washington, D.C. (YXU to WAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London, Ontario to Washington, D.C.

Best Price Found

$247

Fastest flight time

3h 38m

Direct flights

None

Airports in Washington, D.C.

3 airports
The best one-way flight to Washington, D.C. from London, Ontario in the past 72 hours is $247. The best round-trip flight deal from London, Ontario to Washington, D.C. found on momondo in the last 72 hours is $511.
The fastest flight from London, Ontario to Washington, D.C. takes 3h 38m
There are no direct flights from London, Ontario to Washington, D.C.. Popular non-direct routes for this connection are London Airport - Baltimore/Washington Airport, London Airport - Washington, D.C. Reagan-National Airport and London Airport - Washington, D.C. Dulles Intl Airport.
There are 3 airports near Washington, D.C.: Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)
  • How far is London to Washington, D.C. by plane?

    The distance between London and Washington, D.C. is about 356.5 mi. Flights usually cover this in 3h 54m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from London Airport to Washington, D.C.?

    Prices for flights from London Airport to Washington, D.C. are refreshed on a daily basis.

  • How old do you have to be to fly from London Airport to Washington, D.C.?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Airport to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The required travel and health documents for your Washington, D.C. trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
Arlington
National Harbor
Woodbridge
Tysons
Laurel
Silver Spring
Waldorf
Fredericksburg
Colonial Beach
Manassas
Rockville
Towson
Gaithersburg
Fairfax
Reston
Glen Burnie
Linthicum Heights
Springfield

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from London.

Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Washington, D.C. from London with this policy.

How can momondo help me find flights from London to Washington, D.C.?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Washington, D.C..

I’m not ready to book a flight from London to Washington, D.C. right now. Can momondo alert me if prices change?

Price alerts on flights to Washington, D.C. from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Washington, D.C. trip

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1 adult
Sat 8/23
Sat 8/30

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.