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Cheap flights from London, Ontario to Washington, D.C. from C$ 539

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 1/8. 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$ 767Air 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$ 769Air Canada
Wed, 16 Sep - Sat, 19 Sep
Air Canada Logo
6:20 p.m. - 10:34 p.m.
YXU
-
DCA
4h 14m
1 stop
Air Canada Logo
11:00 a.m. - 2:55 p.m.
DCA
-
YXU
3h 55m
1 stop
C$ 774Air Canada
Wed, 16 Sep - Sat, 19 Sep
Air Canada Logo
6:20 p.m. - 10:34 p.m.
YXU
-
DCA
4h 14m
1 stop
Air Canada Logo
11:00 a.m. - 2:55 p.m.
DCA
-
YXU
3h 55m
1 stop
C$ 776Air Canada
Wed, 16 Sep - Sat, 19 Sep
United Airlines Logo
10:05 a.m. - 10:59 p.m.
YXU
-
IAD
12h 54m
2 stops
United Airlines Logo
9:55 a.m. - 2:55 p.m.
IAD
-
YXU
5h 00m
1 stop
C$ 906United Airlines
Tue, 1 Sep - Wed, 2 Sep
United Airlines Logo
5:40 a.m. - 4:02 p.m.
YXU
-
IAD
10h 22m
2 stops
United Airlines Logo
6:15 a.m. - 2:55 p.m.
IAD
-
YXU
8h 40m
2 stops
C$ 914United Airlines
Tue, 1 Sep - Wed, 2 Sep
Multiple Airlines Logo
8:40 p.m. - 3:11 p.m.
YXU
-
IAD
18h 31m
3 stops
Multiple Airlines Logo
11:25 a.m. - 5:20 a.m.
IAD
-
YXU
17h 55m
3 stops
C$ 1,237Multiple Airlines
Fri, 24 Jul - Mon, 31 Aug
Multiple Airlines Logo
8:40 p.m. - 3:11 p.m.
YXU
-
IAD
18h 31m
3 stops
Multiple Airlines Logo
11:24 a.m. - 5:20 a.m.
IAD
-
YXU
17h 56m
2 stops
C$ 1,278Multiple Airlines
Fri, 24 Jul - Mon, 31 Aug
WestJet Logo
2:40 p.m. - 11:50 p.m.
YXU
-
DCA
9h 10m
2 stops
WestJet Logo
3:15 p.m. - 5:20 a.m.
DCA
-
YXU
14h 05m
2 stops
C$ 1,335WestJet
Tue, 1 Sep - Wed, 2 Sep
WestJet Logo
2:40 p.m. - 11:56 p.m.
YXU
-
DCA
9h 16m
2 stops
WestJet Logo
6:10 a.m. - 5:20 a.m.
DCA
-
YXU
23h 10m
2 stops
C$ 1,345WestJet
Fri, 24 Jul - Mon, 31 Aug

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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
1 Sep
YXU10:05 a.m.London
12h 54m
2 stops
IAD10:59 p.m.Washington, D.C. Dulles Intl
2 Sep
IAD9:55 a.m.Washington, D.C. Dulles Intl
5h 00m
1 stop
YXU2:55 p.m.London
C$ 906
United Airlines
1 Sep
YXU5:40 a.m.London
10h 22m
2 stops
IAD4:02 p.m.Washington, D.C. Dulles Intl
2 Sep
IAD6:15 a.m.Washington, D.C. Dulles Intl
8h 40m
2 stops
YXU2:55 p.m.London
C$ 914
United Airlines
24 Jul
YXU10:05 a.m.London
14h 40m
2 stops
IAD12:45 a.m.Washington, D.C. Dulles Intl
31 Aug
IAD10:27 p.m.Washington, D.C. Dulles Intl
16h 28m
2 stops
YXU2:55 p.m.London
C$ 921

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$ 767
Air Canada
16 Sep
YXU6:20 p.m.London
4h 14m
1 stop
DCA10:34 p.m.Washington, D.C. Reagan-National
19 Sep
DCA11:00 a.m.Washington, D.C. Reagan-National
3h 50m
1 stop
YXU2:50 p.m.London
C$ 768
Air Canada
16 Sep
YXU6:20 p.m.London
4h 14m
1 stop
DCA10:34 p.m.Washington, D.C. Reagan-National
19 Sep
DCA11:00 a.m.Washington, D.C. Reagan-National
3h 55m
1 stop
YXU2:55 p.m.London
C$ 774

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 22 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$ 767

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$ 768
Quickest round-trip

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Wed 16/9

6:20 p.m.-10:34 p.m.

1 stop4h 14m

Washington, D.C. Reagan-National

Sat 19/9

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

1 stop3h 55m

C$ 774

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Wed 16/9

6:20 p.m.-10:34 p.m.

1 stop4h 14m

Washington, D.C. Reagan-National

Sat 19/9

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

1 stop3h 55m

C$ 776

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 1/9

10:05 a.m.-10:59 p.m.

2 stops12h 54m

Washington, D.C. Dulles Intl

Wed 2/9

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

1 stop5h 00m

C$ 906

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 1/9

5:40 a.m.-4:02 p.m.

2 stops10h 22m

Washington, D.C. Dulles Intl

Wed 2/9

6:15 a.m.-2:55 p.m.

2 stops8h 40m

C$ 914

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Fri 24/7

8:40 p.m.-3:11 p.m.

3 stops18h 31m

Washington, D.C. Dulles Intl

Mon 31/8

11:25 a.m.-5:20 a.m.

3 stops17h 55m

C$ 1,237

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Fri 24/7

8:40 p.m.-3:11 p.m.

3 stops18h 31m

Washington, D.C. Dulles Intl

Mon 31/8

11:24 a.m.-5:20 a.m.

2 stops17h 56m

C$ 1,278

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Tue 1/9

2:40 p.m.-11:50 p.m.

2 stops9h 10m

Washington, D.C. Reagan-National

Wed 2/9

3:15 p.m.-5:20 a.m.

2 stops14h 05m

C$ 1,335

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Fri 24/7

2:40 p.m.-11:56 p.m.

2 stops9h 16m

Washington, D.C. Reagan-National

Mon 31/8

6:10 a.m.-5:20 a.m.

2 stops23h 10m

C$ 1,345

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 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
Arlington
Gaithersburg
Linthicum Heights
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