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Cheap flights from London, Ontario to Washington, D.C. from C$ 369

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 19/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from London, Ontario to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
5:40 a.m. - 12:01 p.m.
YXU
-
DCA
6h 21m
2 stops
Air Canada Logo
6:59 a.m. - 11:43 a.m.
DCA
-
YXU
4h 44m
1 stop
C$ 626Air Canada
Sun, 3 May - Wed, 6 May
Air Canada Logo
9:30 a.m. - 3:29 p.m.
YXU
-
IAD
5h 59m
1 stop
Air Canada Logo
4:05 p.m. - 9:38 p.m.
IAD
-
YXU
5h 33m
1 stop
C$ 626Air Canada
Wed, 6 May - Fri, 8 May
Air Canada Logo
5:40 a.m. - 12:01 p.m.
YXU
-
DCA
6h 21m
2 stops
Air Canada Logo
9:40 a.m. - 5:33 p.m.
DCA
-
YXU
7h 53m
2 stops
C$ 631Air Canada
Sun, 3 May - Wed, 6 May
Air Canada Logo
5:40 a.m. - 3:03 p.m.
YXU
-
IAD
9h 23m
2 stops
Air Canada Logo
4:05 p.m. - 9:38 p.m.
IAD
-
YXU
5h 33m
1 stop
C$ 631Air Canada
Wed, 6 May - Fri, 8 May
Air Canada Logo
5:10 a.m. - 12:01 p.m.
YXU
-
DCA
6h 51m
2 stops
Air Canada Logo
12:55 p.m. - 9:19 p.m.
DCA
-
YXU
8h 24m
2 stops
C$ 635Air Canada
Mon, 20 Apr - Mon, 27 Apr
Air Canada Logo
9:25 a.m. - 3:39 p.m.
YXU
-
IAD
6h 14m
1 stop
Air Canada Logo
4:30 p.m. - 9:19 p.m.
IAD
-
YXU
4h 49m
1 stop
C$ 645Air Canada
Mon, 20 Apr - Mon, 27 Apr
United Airlines Logo
9:25 a.m. - 9:23 p.m.
YXU
-
BWI
11h 58m
2 stops
United Airlines Logo
6:00 a.m. - 9:19 p.m.
BWI
-
YXU
15h 19m
2 stops
C$ 875United Airlines
Thu, 23 Apr - Fri, 24 Apr
United Airlines Logo
5:10 a.m. - 2:02 p.m.
YXU
-
BWI
8h 52m
2 stops
United Airlines Logo
6:00 a.m. - 9:19 p.m.
BWI
-
YXU
15h 19m
2 stops
C$ 886United Airlines
Thu, 23 Apr - Fri, 24 Apr
United Airlines Logo
5:10 a.m. - 9:23 p.m.
YXU
-
BWI
16h 13m
2 stops
United Airlines Logo
6:00 a.m. - 9:19 p.m.
BWI
-
YXU
15h 19m
2 stops
C$ 912United Airlines
Thu, 23 Apr - Fri, 24 Apr
Multiple Airlines Logo
5:40 p.m. - 10:20 p.m.
YXU
-
BWI
28h 40m
3 stops
Multiple Airlines Logo
9:59 p.m. - 5:20 a.m.
BWI
-
YXU
31h 21m
3 stops
C$ 948Multiple Airlines
Mon, 20 Apr - Mon, 27 Apr

United Airlines flights from London, Ontario to Washington, D.C.

Our best United Airlines deals on London, Ontario to Washington, D.C. flight tickets
United Airlines
22 Apr
YXU5:10 a.m.London
6h 04m
1 stop
IAD11:14 a.m.Washington, D.C. Dulles Intl
29 Apr
IAD8:23 a.m.Washington, D.C. Dulles Intl
8h 41m
2 stops
YXU5:04 p.m.London
C$ 806
United Airlines
22 Apr
YXU9:25 a.m.London
7h 05m
2 stops
IAD4:30 p.m.Washington, D.C. Dulles Intl
29 Apr
IAD6:15 a.m.Washington, D.C. Dulles Intl
10h 49m
2 stops
YXU5:04 p.m.London
C$ 814
United Airlines
23 Apr
YXU9:25 a.m.London
11h 58m
2 stops
BWI9:23 p.m.Baltimore/Washington
24 Apr
BWI6:00 a.m.Baltimore/Washington
15h 19m
2 stops
YXU9:19 p.m.London
C$ 875

Air Canada flights from London, Ontario to Washington, D.C.

Our best Air Canada deals on London, Ontario to Washington, D.C. flight tickets
Air Canada
6 May
YXU9:30 a.m.London
5h 59m
1 stop
IAD3:29 p.m.Washington, D.C. Dulles Intl
8 May
IAD4:05 p.m.Washington, D.C. Dulles Intl
5h 33m
1 stop
YXU9:38 p.m.London
C$ 626
Air Canada
6 May
YXU5:40 a.m.London
9h 23m
2 stops
IAD3:03 p.m.Washington, D.C. Dulles Intl
8 May
IAD4:05 p.m.Washington, D.C. Dulles Intl
5h 33m
1 stop
YXU9:38 p.m.London
C$ 631
Air Canada
20 Apr
YXU5:10 a.m.London
6h 51m
2 stops
DCA12:01 p.m.Washington, D.C. Reagan-National
27 Apr
DCA12:55 p.m.Washington, D.C. Reagan-National
8h 24m
2 stops
YXU9:19 p.m.London
C$ 635

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 96,600 searches. Data last updated 10 March 2026.
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

Cheapest round-trip

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sun 3/5

5:40 a.m.-12:01 p.m.

2 stops6h 21m

Washington, D.C. Reagan-National

Wed 6/5

6:59 a.m.-11:43 a.m.

1 stop4h 44m

C$ 626

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 6/5

9:30 a.m.-3:29 p.m.

1 stop5h 59m

Washington, D.C. Dulles Intl

Fri 8/5

4:05 p.m.-9:38 p.m.

1 stop5h 33m

C$ 626

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sun 3/5

5:40 a.m.-12:01 p.m.

2 stops6h 21m

Washington, D.C. Reagan-National

Wed 6/5

9:40 a.m.-5:33 p.m.

2 stops7h 53m

C$ 631

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 6/5

5:40 a.m.-3:03 p.m.

2 stops9h 23m

Washington, D.C. Dulles Intl

Fri 8/5

4:05 p.m.-9:38 p.m.

1 stop5h 33m

C$ 631

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Mon 20/4

5:10 a.m.-12:01 p.m.

2 stops6h 51m

Washington, D.C. Reagan-National

Mon 27/4

12:55 p.m.-9:19 p.m.

2 stops8h 24m

C$ 635
Quickest round-trip

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 20/4

9:25 a.m.-3:39 p.m.

1 stop6h 14m

Washington, D.C. Dulles Intl

Mon 27/4

4:30 p.m.-9:19 p.m.

1 stop4h 49m

C$ 645

LondonBaltimore

YXU - BWI

YXUBWI

London

Thu 23/4

9:25 a.m.-9:23 p.m.

2 stops11h 58m

Baltimore/Washington

Fri 24/4

6:00 a.m.-9:19 p.m.

2 stops15h 19m

C$ 875

LondonBaltimore

YXU - BWI

YXUBWI

London

Thu 23/4

5:10 a.m.-2:02 p.m.

2 stops8h 52m

Baltimore/Washington

Fri 24/4

6:00 a.m.-9:19 p.m.

2 stops15h 19m

C$ 886

LondonBaltimore

YXU - BWI

YXUBWI

London

Thu 23/4

5:10 a.m.-9:23 p.m.

2 stops16h 13m

Baltimore/Washington

Fri 24/4

6:00 a.m.-9:19 p.m.

2 stops15h 19m

C$ 912

LondonBaltimore

YXU - BWI

YXUBWI

London

Mon 20/4

5:40 p.m.-10:20 p.m.

3 stops28h 40m

Baltimore/Washington

Mon 27/4

9:59 p.m.-5:20 a.m.

3 stops31h 21m

C$ 948

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

Can stopping save me money on London, Ontario to Washington, D.C. flights?

You could potentially save up to 57% on your flight if you consider stops on a London, Ontario to Washington, D.C. flight.

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.

Fastest flight time

3h 43m

Direct flights

None
The fastest flight from London, Ontario to Washington, D.C. takes 3h 43m
There are no direct flights from London, Ontario to Washington, D.C.. There are no popular flight routes from London, Ontario to Washington, D.C..
Search flight deals

  • How far is London to Washington, D.C. by plane?

    London and Washington, D.C. are 573.8 km apart from one another. A reasonable flight in good conditions will take 3h 43m.

  • 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. refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify 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 travel and health documents required for your trip to Washington, D.C. can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
Gaithersburg
Fairfax
Linthicum Heights
Bethesda
National Harbor
Reston
Laurel
Herndon
Arlington
Fredericksburg
Manassas
Woodbridge
Silver Spring
Rockville
McLean
Tysons

Why use momondo?

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

It is quick and easy to find London to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.

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

All flight searches from London to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between London and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Washington, D.C. from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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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 36.1 km from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport