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Cheap flights from London, Ontario to Washington, D.C. from C$ 383

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 11/6. 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

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
6:20 p.m. - 10:31 p.m.
YXU
-
DCA
4h 11m
1 stop
Air Canada Logo
12:40 p.m. - 9:40 p.m.
DCA
-
YXU
9h 00m
2 stops
C$ 714Air Canada
Thu, 9 Jul - Sun, 12 Jul
Air Canada Logo
10:05 a.m. - 3:24 p.m.
YXU
-
IAD
5h 19m
1 stop
Air Canada Logo
4:20 p.m. - 9:40 p.m.
IAD
-
YXU
5h 20m
1 stop
C$ 714Air Canada
Tue, 25 Aug - Wed, 26 Aug
Air Canada Logo
3:30 p.m. - 7:57 p.m.
YXU
-
DCA
4h 27m
1 stop
Air Canada Logo
11:00 a.m. - 2:55 p.m.
DCA
-
YXU
3h 55m
1 stop
C$ 716Air Canada
Thu, 9 Jul - Sun, 12 Jul
Air Canada Logo
3:30 p.m. - 8:24 p.m.
YXU
-
IAD
4h 54m
1 stop
Air Canada Logo
9:55 a.m. - 2:55 p.m.
IAD
-
YXU
5h 00m
1 stop
C$ 716Air Canada
Tue, 25 Aug - Wed, 26 Aug
Air Canada Logo
10:05 a.m. - 7:01 p.m.
YXU
-
IAD
8h 56m
2 stops
Air Canada Logo
9:55 a.m. - 2:55 p.m.
IAD
-
YXU
5h 00m
1 stop
C$ 718Air Canada
Tue, 25 Aug - Wed, 26 Aug
Air Canada Logo
10:05 a.m. - 7:01 p.m.
YXU
-
IAD
8h 56m
2 stops
Air Canada Logo
9:55 a.m. - 2:55 p.m.
IAD
-
YXU
5h 00m
1 stop
C$ 720Air Canada
Tue, 25 Aug - Wed, 26 Aug
United Airlines Logo
3:30 p.m. - 9:26 p.m.
YXU
-
IAD
5h 56m
1 stop
United Airlines Logo
10:29 p.m. - 2:57 p.m.
IAD
-
YXU
16h 28m
2 stops
C$ 810United Airlines
Wed, 10 Jun - Wed, 17 Jun
United Airlines Logo
5:10 a.m. - 1:04 p.m.
YXU
-
DCA
7h 54m
2 stops
United Airlines Logo
7:30 a.m. - 2:58 p.m.
DCA
-
YXU
7h 28m
2 stops
C$ 818United Airlines
Wed, 10 Jun - Wed, 17 Jun
United Airlines Logo
5:10 a.m. - 4:32 p.m.
YXU
-
IAD
11h 22m
2 stops
United Airlines Logo
6:33 a.m. - 2:58 p.m.
IAD
-
YXU
8h 25m
2 stops
C$ 818United Airlines
Wed, 10 Jun - Wed, 17 Jun
Multiple Airlines Logo
5:55 p.m. - 11:29 p.m.
YXU
-
BWI
29h 34m
3 stops
Multiple Airlines Logo
12:25 p.m. - 5:20 a.m.
BWI
-
YXU
16h 55m
3 stops
C$ 1,266Multiple Airlines
Wed, 10 Jun - Wed, 17 Jun

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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
10 Jun
YXU3:30 p.m.London
5h 56m
1 stop
IAD9:26 p.m.Washington, D.C. Dulles Intl
17 Jun
IAD10:29 p.m.Washington, D.C. Dulles Intl
16h 28m
2 stops
YXU2:57 p.m.London
C$ 810
United Airlines
10 Jun
YXU5:10 a.m.London
11h 22m
2 stops
IAD4:32 p.m.Washington, D.C. Dulles Intl
17 Jun
IAD6:33 a.m.Washington, D.C. Dulles Intl
8h 25m
2 stops
YXU2:58 p.m.London
C$ 818
United Airlines
10 Jun
YXU3:30 p.m.London
4h 28m
1 stop
DCA7:58 p.m.Washington, D.C. Reagan-National
17 Jun
DCA7:30 a.m.Washington, D.C. Reagan-National
7h 28m
2 stops
YXU2:58 p.m.London
C$ 833

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
25 Aug
YXU10:05 a.m.London
5h 19m
1 stop
IAD3:24 p.m.Washington, D.C. Dulles Intl
26 Aug
IAD4:20 p.m.Washington, D.C. Dulles Intl
5h 20m
1 stop
YXU9:40 p.m.London
C$ 714
Air Canada
25 Aug
YXU3:30 p.m.London
4h 54m
1 stop
IAD8:24 p.m.Washington, D.C. Dulles Intl
26 Aug
IAD9:55 a.m.Washington, D.C. Dulles Intl
5h 00m
1 stop
YXU2:55 p.m.London
C$ 716
Air Canada
25 Aug
YXU10:05 a.m.London
8h 56m
2 stops
IAD7:01 p.m.Washington, D.C. Dulles Intl
26 Aug
IAD9:55 a.m.Washington, D.C. Dulles Intl
5h 00m
1 stop
YXU2:55 p.m.London
C$ 718

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 30 April 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

Thu 9/7

6:20 p.m.-10:31 p.m.

1 stop4h 11m

Washington, D.C. Reagan-National

Sun 12/7

12:40 p.m.-9:40 p.m.

2 stops9h 00m

C$ 714

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 25/8

10:05 a.m.-3:24 p.m.

1 stop5h 19m

Washington, D.C. Dulles Intl

Wed 26/8

4:20 p.m.-9:40 p.m.

1 stop5h 20m

C$ 714
Quickest round-trip

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 9/7

3:30 p.m.-7:57 p.m.

1 stop4h 27m

Washington, D.C. Reagan-National

Sun 12/7

11:00 a.m.-2:55 p.m.

1 stop3h 55m

C$ 716

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 25/8

3:30 p.m.-8:24 p.m.

1 stop4h 54m

Washington, D.C. Dulles Intl

Wed 26/8

9:55 a.m.-2:55 p.m.

1 stop5h 00m

C$ 716

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 25/8

10:05 a.m.-7:01 p.m.

2 stops8h 56m

Washington, D.C. Dulles Intl

Wed 26/8

9:55 a.m.-2:55 p.m.

1 stop5h 00m

C$ 718

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 25/8

10:05 a.m.-7:01 p.m.

2 stops8h 56m

Washington, D.C. Dulles Intl

Wed 26/8

9:55 a.m.-2:55 p.m.

1 stop5h 00m

C$ 720

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 10/6

3:30 p.m.-9:26 p.m.

1 stop5h 56m

Washington, D.C. Dulles Intl

Wed 17/6

10:29 p.m.-2:57 p.m.

2 stops16h 28m

C$ 810

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Wed 10/6

5:10 a.m.-1:04 p.m.

2 stops7h 54m

Washington, D.C. Reagan-National

Wed 17/6

7:30 a.m.-2:58 p.m.

2 stops7h 28m

C$ 818

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 10/6

5:10 a.m.-4:32 p.m.

2 stops11h 22m

Washington, D.C. Dulles Intl

Wed 17/6

6:33 a.m.-2:58 p.m.

2 stops8h 25m

C$ 818

LondonBaltimore

YXU - BWI

YXUBWI

London

Wed 10/6

5:55 p.m.-11:29 p.m.

3 stops29h 34m

Baltimore/Washington

Wed 17/6

12:25 p.m.-5:20 a.m.

3 stops16h 55m

C$ 1,266

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 42m

Direct flights

None
The fastest flight from London, Ontario to Washington, D.C. takes 3h 42m
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..
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Frequently asked questions about flying from London, Ontario to Washington, D.C.

  • 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 42m.

  • 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
Fairfax
Gaithersburg
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

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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