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Cheap flights from London, Ontario to Washington, D.C. from C$ 414

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 9/9. 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
3:30 p.m. - 8:25 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
4h 55m1 stop Toronto Pearson Intl
Air Canada Logo
4:00 p.m. - 9:40 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
5h 40m1 stop Toronto Pearson Intl
C$ 765Air Canada
Tue, 8 Sep - Tue, 15 Sep
Air Canada Logo
3:25 p.m. - 8:10 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
4h 45m1 stop Toronto Pearson Intl
Air Canada Logo
9:55 a.m. - 2:47 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
4h 52m1 stop Toronto Pearson Intl
C$ 921Air Canada
Sun, 22 Nov - Thu, 26 Nov
Air Canada Logo
5:40 a.m. - 12:00 p.m.YXU  London-DCA Washington, D.C. Reagan-National
6h 20m2 stops Toronto Pearson Intl Ottawa
Air Canada Logo
12:40 p.m. - 9:40 p.m.DCA  Washington, D.C. Reagan-National-YXU London
9h 00m2 stops Ottawa Toronto Pearson Intl
C$ 923Air Canada
Thu, 1 Oct - Mon, 5 Oct
Air Canada Logo
3:25 p.m. - 8:10 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
4h 45m1 stop Toronto Pearson Intl
Air Canada Logo
9:55 a.m. - 2:47 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
4h 52m1 stop Toronto Pearson Intl
C$ 923Air Canada
Sun, 22 Nov - Thu, 26 Nov
Air Canada Logo
9:15 a.m. - 8:23 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
11h 08m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
9:55 a.m. - 2:47 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
4h 52m1 stop Toronto Pearson Intl
C$ 927Air Canada
Sun, 22 Nov - Thu, 26 Nov
United Airlines Logo
5:40 a.m. - 10:59 p.m.YXU  London-BWI Baltimore/Washington
17h 19m2 stops Toronto Pearson Intl Chicago O'Hare Intl
United Airlines Logo
9:09 a.m. - 9:40 p.m.BWI  Baltimore/Washington-YXU London
12h 31m2 stops Chicago O'Hare Intl Toronto Pearson Intl
C$ 1,036United Airlines
Thu, 24 Sep - Thu, 1 Oct
United Airlines Logo
5:30 a.m. - 9:42 p.m.YXU  London-BWI Baltimore/Washington
16h 12m2 stops Toronto Pearson Intl Chicago O'Hare Intl
United Airlines Logo
12:34 p.m. - 9:52 p.m.BWI  Baltimore/Washington-YXU London
9h 18m2 stops Chicago O'Hare Intl Toronto Pearson Intl
C$ 1,036United Airlines
Sat, 7 Nov - Thu, 12 Nov
Air Canada Logo
9:15 a.m. - 4:01 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
6h 46m2 stops Toronto Pearson Intl Ottawa
Air Canada Logo
1:05 p.m. - 9:47 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
8h 42m2 stops Chicago O'Hare Intl Toronto Pearson Intl
C$ 1,037Air Canada
Fri, 5 Feb - Mon, 8 Feb
Air Canada Logo
9:15 a.m. - 8:23 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
11h 08m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
6:11 a.m. - 2:47 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
8h 36m2 stops Chicago O'Hare Intl Toronto Pearson Intl
C$ 1,043Air Canada
Sun, 22 Nov - Thu, 26 Nov
United Airlines Logo
5:30 a.m. - 9:42 p.m.YXU  London-BWI Baltimore/Washington
16h 12m2 stops Toronto Pearson Intl Chicago O'Hare Intl
United Airlines Logo
6:10 a.m. - 9:52 p.m.BWI  Baltimore/Washington-YXU London
15h 42m2 stops Chicago O'Hare Intl Toronto Pearson Intl
C$ 1,046United Airlines
Sun, 22 Nov - Thu, 26 Nov

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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
8 Sep
YXU3:30 p.m.London
4h 55m
1 stop
IAD8:25 p.m.Washington, D.C. Dulles Intl
15 Sep
IAD4:00 p.m.Washington, D.C. Dulles Intl
5h 40m
1 stop
YXU9:40 p.m.London
C$ 765
Air Canada
22 Nov
YXU3:25 p.m.London
4h 45m
1 stop
IAD8:10 p.m.Washington, D.C. Dulles Intl
26 Nov
IAD9:55 a.m.Washington, D.C. Dulles Intl
4h 52m
1 stop
YXU2:47 p.m.London
C$ 921
Air Canada
22 Nov
YXU3:25 p.m.London
4h 45m
1 stop
IAD8:10 p.m.Washington, D.C. Dulles Intl
26 Nov
IAD9:55 a.m.Washington, D.C. Dulles Intl
4h 52m
1 stop
YXU2:47 p.m.London
C$ 923

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
24 Sep
YXU5:40 a.m.London
17h 19m
2 stops
BWI10:59 p.m.Baltimore/Washington
1 Oct
BWI9:09 a.m.Baltimore/Washington
12h 31m
2 stops
YXU9:40 p.m.London
C$ 1,036
United Airlines
22 Nov
YXU5:30 a.m.London
16h 12m
2 stops
BWI9:42 p.m.Baltimore/Washington
26 Nov
BWI6:10 a.m.Baltimore/Washington
15h 42m
2 stops
YXU9:52 p.m.London
C$ 1,046
United Airlines
22 Nov
YXU5:30 a.m.London
16h 12m
2 stops
BWI9:42 p.m.Baltimore/Washington
26 Nov
BWI6:10 a.m.Baltimore/Washington
15h 42m
2 stops
YXU9:52 p.m.London
C$ 1,047

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 August 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 London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Tue 8/9

3:30 p.m.-8:25 p.m.

1 stop4h 55m

Washington, D.C. Dulles Intl

Tue 15/9

4:00 p.m.-9:40 p.m.

1 stop5h 40m

C$ 765
Quickest round-trip

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Sun 22/11

3:25 p.m.-8:10 p.m.

1 stop4h 45m

Washington, D.C. Dulles Intl

Thu 26/11

9:55 a.m.-2:47 p.m.

1 stop4h 52m

C$ 921

LondonWashington, D.C.

YXU London - DCA Washington, D.C. Reagan-National

YXUDCA

London

Thu 1/10

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

2 stops6h 20m

Washington, D.C. Reagan-National

Mon 5/10

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

2 stops9h 00m

C$ 923

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Sun 22/11

3:25 p.m.-8:10 p.m.

1 stop4h 45m

Washington, D.C. Dulles Intl

Thu 26/11

9:55 a.m.-2:47 p.m.

1 stop4h 52m

C$ 923

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Sun 22/11

9:15 a.m.-8:23 p.m.

2 stops11h 08m

Washington, D.C. Dulles Intl

Thu 26/11

9:55 a.m.-2:47 p.m.

1 stop4h 52m

C$ 927

LondonBaltimore

YXU London - BWI Baltimore/Washington

YXUBWI

London

Thu 24/9

5:40 a.m.-10:59 p.m.

2 stops17h 19m

Baltimore/Washington

Thu 1/10

9:09 a.m.-9:40 p.m.

2 stops12h 31m

C$ 1,036

LondonBaltimore

YXU London - BWI Baltimore/Washington

YXUBWI

London

Sat 7/11

5:30 a.m.-9:42 p.m.

2 stops16h 12m

Baltimore/Washington

Thu 12/11

12:34 p.m.-9:52 p.m.

2 stops9h 18m

C$ 1,036

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Fri 5/2

9:15 a.m.-4:01 p.m.

2 stops6h 46m

Washington, D.C. Dulles Intl

Mon 8/2

1:05 p.m.-9:47 p.m.

2 stops8h 42m

C$ 1,037

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Sun 22/11

9:15 a.m.-8:23 p.m.

2 stops11h 08m

Washington, D.C. Dulles Intl

Thu 26/11

6:11 a.m.-2:47 p.m.

2 stops8h 36m

C$ 1,043

LondonBaltimore

YXU London - BWI Baltimore/Washington

YXUBWI

London

Sun 22/11

5:30 a.m.-9:42 p.m.

2 stops16h 12m

Baltimore/Washington

Thu 26/11

6:10 a.m.-9:52 p.m.

2 stops15h 42m

C$ 1,046

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
Gaithersburg
Arlington
Fairfax
National Harbor
Fredericksburg
Woodbridge
Herndon
Silver Spring
Falls Church
Easton
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.

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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