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Cheap flights from London, Ontario to Washington, D.C. from C$ 412

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 28/5. 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

Enter your travel dates to find the best prices.
Air Canada Logo
5:10 a.m. - 8:53 a.m.
YXU
-
DCA
3h 43m
1 stop
Air Canada Logo
6:59 a.m. - 11:43 a.m.
DCA
-
YXU
4h 44m
1 stop
C$ 709Air Canada
Sat, 2 May - Wed, 6 May
Air Canada Logo
12:20 p.m. - 9:55 p.m.
YXU
-
DCA
9h 35m
2 stops
Air Canada Logo
12:45 p.m. - 9:38 p.m.
DCA
-
YXU
8h 53m
2 stops
C$ 714Air Canada
Sat, 2 May - Wed, 6 May
Air Canada Logo
12:20 p.m. - 6:58 p.m.
YXU
-
IAD
6h 38m
2 stops
Air Canada Logo
4:05 p.m. - 9:38 p.m.
IAD
-
YXU
5h 33m
1 stop
C$ 714Air Canada
Sat, 23 May - Wed, 27 May
Air Canada Logo
6:10 p.m. - 10:28 p.m.
YXU
-
DCA
4h 18m
1 stop
Air Canada Logo
6:59 a.m. - 5:33 p.m.
DCA
-
YXU
10h 34m
1 stop
C$ 718Air Canada
Sat, 23 May - Sat, 30 May
Air Canada Logo
5:10 a.m. - 3:29 p.m.
YXU
-
IAD
10h 19m
1 stop
Air Canada Logo
4:05 p.m. - 9:38 p.m.
IAD
-
YXU
5h 33m
1 stop
C$ 761Air Canada
Sat, 23 May - Wed, 27 May
Air Canada Logo
9:30 a.m. - 3:24 p.m.
YXU
-
IAD
5h 54m
1 stop
Air Canada Logo
4:20 p.m. - 9:40 p.m.
IAD
-
YXU
5h 20m
1 stop
C$ 763Air Canada
Tue, 30 Jun - Sat, 4 Jul
Air Canada Logo
12:20 p.m. - 6:58 p.m.
YXU
-
IAD
6h 38m
2 stops
Air Canada Logo
4:05 p.m. - 9:38 p.m.
IAD
-
YXU
5h 33m
1 stop
C$ 767Air Canada
Sat, 23 May - Wed, 27 May
Air Canada Logo
5:10 a.m. - 8:53 a.m.
YXU
-
DCA
3h 43m
1 stop
Air Canada Logo
11:00 a.m. - 2:58 p.m.
DCA
-
YXU
3h 58m
1 stop
C$ 769Air Canada
Sat, 6 Jun - Sun, 14 Jun
United Airlines Logo
12:20 p.m. - 6:13 p.m.
YXU
-
DCA
5h 53m
1 stop
United Airlines Logo
9:30 a.m. - 9:38 p.m.
DCA
-
YXU
12h 08m
2 stops
C$ 779United Airlines
Sat, 23 May - Sat, 30 May
United Airlines Logo
5:10 a.m. - 2:23 p.m.
YXU
-
DCA
9h 13m
2 stops
United Airlines Logo
6:30 a.m. - 9:38 p.m.
DCA
-
YXU
15h 08m
2 stops
C$ 787United Airlines
Sat, 23 May - Sat, 30 May

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
2 May
YXU5:10 a.m.London
3h 43m
1 stop
DCA8:53 a.m.Washington, D.C. Reagan-National
6 May
DCA12:45 p.m.Washington, D.C. Reagan-National
8h 53m
2 stops
YXU9:38 p.m.London
C$ 709
Air Canada
23 May
YXU12:20 p.m.London
6h 38m
2 stops
IAD6:58 p.m.Washington, D.C. Dulles Intl
27 May
IAD4:05 p.m.Washington, D.C. Dulles Intl
5h 33m
1 stop
YXU9:38 p.m.London
C$ 714
Air Canada
23 May
YXU5:10 a.m.London
10h 19m
1 stop
IAD3:29 p.m.Washington, D.C. Dulles Intl
27 May
IAD4:05 p.m.Washington, D.C. Dulles Intl
5h 33m
1 stop
YXU9:38 p.m.London
C$ 761

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
4 Jun
YXU12:20 p.m.London
12h 13m
2 stops
BWI12:33 a.m.Baltimore/Washington
7 Jun
BWI6:15 a.m.Baltimore/Washington
8h 43m
2 stops
YXU2:58 p.m.London
C$ 960
United Airlines
4 Jun
YXU12:20 p.m.London
12h 13m
2 stops
BWI12:33 a.m.Baltimore/Washington
7 Jun
BWI6:15 a.m.Baltimore/Washington
8h 43m
2 stops
YXU2:58 p.m.London
C$ 961
United Airlines
11 May
YXU5:10 a.m.London
3h 43m
1 stop
DCA8:53 a.m.Washington, D.C. Reagan-National
18 May
DCA6:59 a.m.Washington, D.C. Reagan-National
4h 44m
1 stop
YXU11:43 a.m.London
C$ 1,007

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 14 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

Sat 2/5

5:10 a.m.-8:53 a.m.

1 stop3h 43m

Washington, D.C. Reagan-National

Wed 6/5

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

1 stop4h 44m

C$ 709

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sat 2/5

12:20 p.m.-9:55 p.m.

2 stops9h 35m

Washington, D.C. Reagan-National

Wed 6/5

12:45 p.m.-9:38 p.m.

2 stops8h 53m

C$ 714

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sat 23/5

12:20 p.m.-6:58 p.m.

2 stops6h 38m

Washington, D.C. Dulles Intl

Wed 27/5

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

1 stop5h 33m

C$ 714

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sat 23/5

6:10 p.m.-10:28 p.m.

1 stop4h 18m

Washington, D.C. Reagan-National

Sat 30/5

6:59 a.m.-5:33 p.m.

1 stop10h 34m

C$ 718

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sat 23/5

5:10 a.m.-3:29 p.m.

1 stop10h 19m

Washington, D.C. Dulles Intl

Wed 27/5

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

1 stop5h 33m

C$ 761

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 30/6

9:30 a.m.-3:24 p.m.

1 stop5h 54m

Washington, D.C. Dulles Intl

Sat 4/7

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

1 stop5h 20m

C$ 763

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sat 23/5

12:20 p.m.-6:58 p.m.

2 stops6h 38m

Washington, D.C. Dulles Intl

Wed 27/5

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

1 stop5h 33m

C$ 767
Quickest round-trip

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sat 6/6

5:10 a.m.-8:53 a.m.

1 stop3h 43m

Washington, D.C. Reagan-National

Sun 14/6

11:00 a.m.-2:58 p.m.

1 stop3h 58m

C$ 769

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sat 23/5

12:20 p.m.-6:13 p.m.

1 stop5h 53m

Washington, D.C. Reagan-National

Sat 30/5

9:30 a.m.-9:38 p.m.

2 stops12h 08m

C$ 779

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sat 23/5

5:10 a.m.-2:23 p.m.

2 stops9h 13m

Washington, D.C. Reagan-National

Sat 30/5

6:30 a.m.-9:38 p.m.

2 stops15h 08m

C$ 787

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 18m

Direct flights

None
The fastest flight from London, Ontario to Washington, D.C. takes 4h 18m
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 18m.

  • 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