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Cheap flights from London, Ontario to Washington, D.C. from C$ 382

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 4/6. 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
5:10 a.m. - 12:00 p.m.
YXU
-
DCA
6h 50m
2 stops
Air Canada Logo
12:40 p.m. - 9:37 p.m.
DCA
-
YXU
8h 57m
2 stops
C$ 703Air Canada
Wed, 24 Jun - Sat, 27 Jun
Air Canada Logo
9:30 a.m. - 3:24 p.m.
YXU
-
IAD
5h 54m
1 stop
Air Canada Logo
9:55 a.m. - 2:55 p.m.
IAD
-
YXU
5h 00m
1 stop
C$ 703Air Canada
Tue, 30 Jun - Sat, 4 Jul
Air Canada Logo
12:20 p.m. - 6:12 p.m.
YXU
-
DCA
5h 52m
1 stop
Air Canada Logo
6:59 a.m. - 11:42 a.m.
DCA
-
YXU
4h 43m
1 stop
C$ 705Air Canada
Wed, 24 Jun - Sat, 27 Jun
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$ 705Air Canada
Tue, 30 Jun - Sat, 4 Jul
Air Canada Logo
5:10 a.m. - 12:00 p.m.
YXU
-
DCA
6h 50m
2 stops
Air Canada Logo
6:59 a.m. - 11:42 a.m.
DCA
-
YXU
4h 43m
1 stop
C$ 706Air Canada
Wed, 24 Jun - Sat, 27 Jun
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$ 706Air Canada
Tue, 30 Jun - Sat, 4 Jul
United Airlines Logo
5:10 a.m. - 1:04 p.m.
YXU
-
DCA
7h 54m
2 stops
United Airlines Logo
6:59 a.m. - 11:43 a.m.
DCA
-
YXU
4h 44m
1 stop
C$ 826United Airlines
Thu, 4 Jun - Thu, 11 Jun
United Airlines Logo
12:20 p.m. - 8:10 p.m.
YXU
-
DCA
7h 50m
2 stops
United Airlines Logo
7:30 a.m. - 2:58 p.m.
DCA
-
YXU
7h 28m
2 stops
C$ 867United Airlines
Thu, 4 Jun - Thu, 11 Jun
Multiple Airlines Logo
5:55 p.m. - 6:10 p.m.
YXU
-
IAD
24h 15m
1 stop
Multiple Airlines Logo
4:05 p.m. - 1:50 p.m.
IAD
-
YXU
21h 45m
2 stops
C$ 876Multiple Airlines
Thu, 21 May - Thu, 28 May
United Airlines Logo
5:10 a.m. - 5:33 p.m.
YXU
-
BWI
12h 23m
2 stops
United Airlines Logo
6:15 a.m. - 2:58 p.m.
BWI
-
YXU
8h 43m
2 stops
C$ 889United Airlines
Thu, 4 Jun - Thu, 11 Jun

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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
30 Jun
YXU9:30 a.m.London
5h 54m
1 stop
IAD3:24 p.m.Washington, D.C. Dulles Intl
4 Jul
IAD9:55 a.m.Washington, D.C. Dulles Intl
5h 00m
1 stop
YXU2:55 p.m.London
C$ 703
Air Canada
30 Jun
YXU9:30 a.m.London
5h 54m
1 stop
IAD3:24 p.m.Washington, D.C. Dulles Intl
4 Jul
IAD4:20 p.m.Washington, D.C. Dulles Intl
5h 20m
1 stop
YXU9:40 p.m.London
C$ 705
Air Canada
30 Jun
YXU9:30 a.m.London
5h 54m
1 stop
IAD3:24 p.m.Washington, D.C. Dulles Intl
4 Jul
IAD4:20 p.m.Washington, D.C. Dulles Intl
5h 20m
1 stop
YXU9:40 p.m.London
C$ 706

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
YXU5:10 a.m.London
7h 54m
2 stops
DCA1:04 p.m.Washington, D.C. Reagan-National
11 Jun
DCA6:59 a.m.Washington, D.C. Reagan-National
4h 44m
1 stop
YXU11:43 a.m.London
C$ 826
United Airlines
4 Jun
YXU12:20 p.m.London
7h 50m
2 stops
DCA8:10 p.m.Washington, D.C. Reagan-National
11 Jun
DCA7:30 a.m.Washington, D.C. Reagan-National
7h 28m
2 stops
YXU2:58 p.m.London
C$ 867
United Airlines
4 Jun
YXU12:20 p.m.London
3h 53m
1 stop
IAD4:13 p.m.Washington, D.C. Dulles Intl
11 Jun
IAD6:33 a.m.Washington, D.C. Dulles Intl
8h 25m
2 stops
YXU2:58 p.m.London
C$ 885

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 24 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

Wed 24/6

5:10 a.m.-12:00 p.m.

2 stops6h 50m

Washington, D.C. Reagan-National

Sat 27/6

12:40 p.m.-9:37 p.m.

2 stops8h 57m

C$ 703

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

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

1 stop5h 00m

C$ 703
Quickest round-trip

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Wed 24/6

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

1 stop5h 52m

Washington, D.C. Reagan-National

Sat 27/6

6:59 a.m.-11:42 a.m.

1 stop4h 43m

C$ 705

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$ 705

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Wed 24/6

5:10 a.m.-12:00 p.m.

2 stops6h 50m

Washington, D.C. Reagan-National

Sat 27/6

6:59 a.m.-11:42 a.m.

1 stop4h 43m

C$ 706

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$ 706

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 4/6

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

2 stops7h 54m

Washington, D.C. Reagan-National

Thu 11/6

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

1 stop4h 44m

C$ 826

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 4/6

12:20 p.m.-8:10 p.m.

2 stops7h 50m

Washington, D.C. Reagan-National

Thu 11/6

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

2 stops7h 28m

C$ 867

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Thu 21/5

5:55 p.m.-6:10 p.m.

1 stop24h 15m

Washington, D.C. Dulles Intl

Thu 28/5

4:05 p.m.-1:50 p.m.

2 stops21h 45m

C$ 876

LondonBaltimore

YXU - BWI

YXUBWI

London

Thu 4/6

5:10 a.m.-5:33 p.m.

2 stops12h 23m

Baltimore/Washington

Thu 11/6

6:15 a.m.-2:58 p.m.

2 stops8h 43m

C$ 889

Flights are sorted by cheapest round-trip flights 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

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