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Cheap flights from London, Ontario to Washington, D.C. from C$ 430

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 11/7. 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

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. - 12:00 p.m.
YXU
-
DCA
6h 20m
2 stops
Air Canada Logo
12:40 p.m. - 9:40 p.m.
DCA
-
YXU
9h 00m
2 stops
C$ 766Air Canada
Wed, 16 Sep - Sat, 19 Sep
Air Canada Logo
5:40 a.m. - 12:00 p.m.
YXU
-
DCA
6h 20m
2 stops
Air Canada Logo
12:40 p.m. - 9:40 p.m.
DCA
-
YXU
9h 00m
2 stops
C$ 767Air Canada
Wed, 16 Sep - Sat, 19 Sep
Air Canada Logo
9:45 a.m. - 3:50 p.m.
YXU
-
IAD
6h 05m
1 stop
Air Canada Logo
4:30 p.m. - 9:46 p.m.
IAD
-
YXU
5h 16m
1 stop
C$ 767Air Canada
Wed, 2 Dec - Sat, 5 Dec
Air Canada Logo
9:45 a.m. - 8:23 p.m.
YXU
-
IAD
10h 38m
2 stops
Air Canada Logo
9:55 a.m. - 3:06 p.m.
IAD
-
YXU
5h 11m
1 stop
C$ 772Air Canada
Wed, 2 Dec - Sat, 5 Dec
Air Canada Logo
6:20 p.m. - 10:31 p.m.
YXU
-
DCA
4h 11m
1 stop
Air Canada Logo
11:00 a.m. - 2:52 p.m.
DCA
-
YXU
3h 52m
1 stop
C$ 801Air Canada
Thu, 9 Jul - Thu, 16 Jul
Multiple Airlines Logo
6:20 p.m. - 10:31 p.m.
YXU
-
DCA
4h 11m
1 stop
Multiple Airlines Logo
12:40 p.m. - 8:32 p.m.
DCA
-
YXU
7h 52m
2 stops
C$ 906Multiple Airlines
Thu, 9 Jul - Thu, 16 Jul
United Airlines Logo
10:05 a.m. - 7:02 p.m.
YXU
-
IAD
8h 57m
2 stops
United Airlines Logo
4:20 p.m. - 8:32 p.m.
IAD
-
YXU
4h 12m
1 stop
C$ 914United Airlines
Thu, 9 Jul - Thu, 16 Jul
Multiple Airlines Logo
6:20 p.m. - 9:32 a.m.
YXU
-
DCA
15h 12m
2 stops
Multiple Airlines Logo
12:40 p.m. - 8:32 p.m.
DCA
-
YXU
7h 52m
2 stops
C$ 914Multiple Airlines
Thu, 9 Jul - Thu, 16 Jul
United Airlines Logo
10:05 a.m. - 9:29 p.m.
YXU
-
BWI
11h 24m
2 stops
United Airlines Logo
12:10 p.m. - 9:40 p.m.
BWI
-
YXU
9h 30m
2 stops
C$ 1,034United Airlines
Sat, 19 Sep - Tue, 22 Sep
WestJet Logo
8:40 p.m. - 10:47 a.m.
YXU
-
BWI
14h 07m
2 stops
WestJet Logo
9:39 a.m. - 5:20 a.m.
BWI
-
YXU
19h 41m
2 stops
C$ 2,067WestJet
Thu, 9 Jul - Thu, 16 Jul

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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
16 Sep
YXU5:40 a.m.London
6h 20m
2 stops
DCA12:00 p.m.Washington, D.C. Reagan-National
19 Sep
DCA12:40 p.m.Washington, D.C. Reagan-National
9h 00m
2 stops
YXU9:40 p.m.London
C$ 766
Air Canada
2 Dec
YXU9:45 a.m.London
6h 05m
1 stop
IAD3:50 p.m.Washington, D.C. Dulles Intl
5 Dec
IAD4:30 p.m.Washington, D.C. Dulles Intl
5h 16m
1 stop
YXU9:46 p.m.London
C$ 767
Air Canada
2 Dec
YXU9:45 a.m.London
10h 38m
2 stops
IAD8:23 p.m.Washington, D.C. Dulles Intl
5 Dec
IAD9:55 a.m.Washington, D.C. Dulles Intl
5h 11m
1 stop
YXU3:06 p.m.London
C$ 772

WestJet flights from London, Ontario to Washington, D.C.

Our best WestJet deals on London, Ontario to Washington, D.C. flight tickets
WestJet
9 Jul
YXU8:40 p.m.London
14h 07m
2 stops
BWI10:47 a.m.Baltimore/Washington
16 Jul
BWI9:39 a.m.Baltimore/Washington
19h 41m
2 stops
YXU5:20 a.m.London
C$ 2,067
WestJet
19 Jun
YXU2:40 p.m.London
8h 45m
2 stops
IAD11:25 p.m.Washington, D.C. Dulles Intl
26 Jun
IAD7:00 p.m.Washington, D.C. Dulles Intl
10h 20m
1 stop
YXU5:20 a.m.London
C$ 4,057
WestJet
19 Jun
YXU6:10 a.m.London
12h 00m
1 stop
IAD6:10 p.m.Washington, D.C. Dulles Intl
26 Jun
IAD7:00 p.m.Washington, D.C. Dulles Intl
10h 20m
1 stop
YXU5:20 a.m.London
C$ 4,214

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 16 June 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

Wed 16/9

5:40 a.m.-12:00 p.m.

2 stops6h 20m

Washington, D.C. Reagan-National

Sat 19/9

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

2 stops9h 00m

C$ 766

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Wed 16/9

5:40 a.m.-12:00 p.m.

2 stops6h 20m

Washington, D.C. Reagan-National

Sat 19/9

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

2 stops9h 00m

C$ 767

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 2/12

9:45 a.m.-3:50 p.m.

1 stop6h 05m

Washington, D.C. Dulles Intl

Sat 5/12

4:30 p.m.-9:46 p.m.

1 stop5h 16m

C$ 767

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 2/12

9:45 a.m.-8:23 p.m.

2 stops10h 38m

Washington, D.C. Dulles Intl

Sat 5/12

9:55 a.m.-3:06 p.m.

1 stop5h 11m

C$ 772
Quickest 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

Thu 16/7

11:00 a.m.-2:52 p.m.

1 stop3h 52m

C$ 801

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

Thu 16/7

12:40 p.m.-8:32 p.m.

2 stops7h 52m

C$ 906

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Thu 9/7

10:05 a.m.-7:02 p.m.

2 stops8h 57m

Washington, D.C. Dulles Intl

Thu 16/7

4:20 p.m.-8:32 p.m.

1 stop4h 12m

C$ 914

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 9/7

6:20 p.m.-9:32 a.m.

2 stops15h 12m

Washington, D.C. Reagan-National

Thu 16/7

12:40 p.m.-8:32 p.m.

2 stops7h 52m

C$ 914

LondonBaltimore

YXU - BWI

YXUBWI

London

Sat 19/9

10:05 a.m.-9:29 p.m.

2 stops11h 24m

Baltimore/Washington

Tue 22/9

12:10 p.m.-9:40 p.m.

2 stops9h 30m

C$ 1,034

LondonBaltimore

YXU - BWI

YXUBWI

London

Thu 9/7

8:40 p.m.-10:47 a.m.

2 stops14h 07m

Baltimore/Washington

Thu 16/7

9:39 a.m.-5:20 a.m.

2 stops19h 41m

C$ 2,067

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

4h 14m

Direct flights

None
The fastest flight from London, Ontario to Washington, D.C. takes 4h 14m
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 4h 14m.

  • 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
Arlington
Gaithersburg
Linthicum Heights
Bethesda
National Harbor
Reston
Herndon
Fredericksburg
Manassas
Woodbridge
Silver Spring
Falls Church
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