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Cheap flights from London, Ontario to Washington, D.C. from C$ 259

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 30/1. 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
9:50 a.m. - 3:46 p.m.
YXU
-
IAD
5h 56m1 stop
Air Canada Logo
4:30 p.m. - 9:21 p.m.
IAD
-
YXU
4h 51m1 stop
C$ 653Air Canada
Sun, 25 Jan - Thu, 29 Jan
Air Canada Logo
9:50 a.m. - 3:46 p.m.
YXU
-
IAD
5h 56m1 stop
Air Canada Logo
4:30 p.m. - 9:21 p.m.
IAD
-
YXU
4h 51m1 stop
C$ 654Air Canada
Sun, 25 Jan - Thu, 29 Jan
Air Canada Logo
9:50 a.m. - 3:46 p.m.
YXU
-
IAD
5h 56m1 stop
Air Canada Logo
9:45 a.m. - 5:05 p.m.
IAD
-
YXU
7h 20m2 stops
C$ 659Air Canada
Sun, 25 Jan - Thu, 29 Jan
Air Canada Logo
9:50 a.m. - 8:54 p.m.
YXU
-
IAD
11h 04m2 stops
Air Canada Logo
9:45 a.m. - 9:21 p.m.
IAD
-
YXU
11h 36m2 stops
C$ 663Air Canada
Sun, 25 Jan - Thu, 29 Jan
Air Canada Logo
9:50 a.m. - 3:46 p.m.
YXU
-
IAD
5h 56m1 stop
Air Canada Logo
4:30 p.m. - 9:21 p.m.
IAD
-
YXU
4h 51m1 stop
C$ 664Air Canada
Sun, 25 Jan - Thu, 29 Jan
Air Canada Logo
9:50 a.m. - 3:46 p.m.
YXU
-
IAD
5h 56m1 stop
Air Canada Logo
9:45 a.m. - 9:21 p.m.
IAD
-
YXU
11h 36m2 stops
C$ 670Air Canada
Sun, 25 Jan - Thu, 29 Jan
Air Canada Logo
9:50 a.m. - 8:54 p.m.
YXU
-
IAD
11h 04m2 stops
Air Canada Logo
9:45 a.m. - 5:05 p.m.
IAD
-
YXU
7h 20m2 stops
C$ 674Air Canada
Sun, 25 Jan - Thu, 29 Jan
Air Canada Logo
9:50 a.m. - 3:46 p.m.
YXU
-
IAD
5h 56m1 stop
Air Canada Logo
4:30 p.m. - 9:20 p.m.
IAD
-
YXU
4h 50m1 stop
C$ 685Air Canada
Tue, 13 Jan - Fri, 16 Jan
Air Canada Logo
5:10 a.m. - 11:49 a.m.
YXU
-
IAD
6h 39m2 stops
Air Canada Logo
4:30 p.m. - 9:20 p.m.
IAD
-
YXU
4h 50m1 stop
C$ 769Air Canada
Tue, 13 Jan - Fri, 16 Jan
United Airlines Logo
9:50 a.m. - 5:35 p.m.
YXU
-
IAD
7h 45m2 stops
United Airlines Logo
8:29 a.m. - 5:05 p.m.
IAD
-
YXU
8h 36m2 stops
C$ 777United Airlines
Tue, 13 Jan - Fri, 16 Jan

Air Canada flights from London, Ontario to Washington, D.C. Dulles Intl Airport

Our best Air Canada deals on London, Ontario to Washington, D.C. Dulles Intl Airport flight tickets
Air Canada
25 Jan
YXU9:50 a.m.London
5h 56m
1 stop
IAD3:46 p.m.Washington, D.C. Dulles Intl
29 Jan
IAD4:30 p.m.Washington, D.C. Dulles Intl
4h 51m
1 stop
YXU9:21 p.m.London
C$ 653
Find similar
Air Canada
25 Jan
YXU9:50 a.m.London
5h 56m
1 stop
IAD3:46 p.m.Washington, D.C. Dulles Intl
29 Jan
IAD4:30 p.m.Washington, D.C. Dulles Intl
4h 51m
1 stop
YXU9:21 p.m.London
C$ 654
Find similar
Air Canada
25 Jan
YXU9:50 a.m.London
5h 56m
1 stop
IAD3:46 p.m.Washington, D.C. Dulles Intl
29 Jan
IAD9:45 a.m.Washington, D.C. Dulles Intl
7h 20m
2 stops
YXU5:05 p.m.London
C$ 659
Find similar

United Airlines flights from London, Ontario to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on London, Ontario to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
13 Jan
YXU9:50 a.m.London
7h 45m
2 stops
IAD5:35 p.m.Washington, D.C. Dulles Intl
16 Jan
IAD8:29 a.m.Washington, D.C. Dulles Intl
8h 36m
2 stops
YXU5:05 p.m.London
C$ 777
Find similar
United Airlines
21 Dec
YXU9:25 a.m.London
6h 21m
1 stop
IAD3:46 p.m.Washington, D.C. Dulles Intl
22 Dec
IAD8:15 a.m.Washington, D.C. Dulles Intl
13h 06m
2 stops
YXU9:21 p.m.London
C$ 1,425
Find similar
United Airlines
21 Dec
YXU9:25 a.m.London
14h 50m
2 stops
IAD12:15 a.m.Washington, D.C. Dulles Intl
22 Dec
IAD8:15 a.m.Washington, D.C. Dulles Intl
13h 06m
2 stops
YXU9:21 p.m.London
C$ 1,433
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London, Ontario to Washington, D.C. Dulles Intl Airport 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 18 December 2025.
Use the filters below to find and compare flights from London, Ontario to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sun 25/1

9:50 a.m.-3:46 p.m.

1 stop5h 56m

Washington, D.C. Dulles Intl

Thu 29/1

4:30 p.m.-9:21 p.m.

1 stop4h 51m

C$ 653

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sun 25/1

9:50 a.m.-3:46 p.m.

1 stop5h 56m

Washington, D.C. Dulles Intl

Thu 29/1

4:30 p.m.-9:21 p.m.

1 stop4h 51m

C$ 654

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sun 25/1

9:50 a.m.-3:46 p.m.

1 stop5h 56m

Washington, D.C. Dulles Intl

Thu 29/1

9:45 a.m.-5:05 p.m.

2 stops7h 20m

C$ 659

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sun 25/1

9:50 a.m.-8:54 p.m.

2 stops11h 04m

Washington, D.C. Dulles Intl

Thu 29/1

9:45 a.m.-9:21 p.m.

2 stops11h 36m

C$ 663

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sun 25/1

9:50 a.m.-3:46 p.m.

1 stop5h 56m

Washington, D.C. Dulles Intl

Thu 29/1

4:30 p.m.-9:21 p.m.

1 stop4h 51m

C$ 664

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sun 25/1

9:50 a.m.-3:46 p.m.

1 stop5h 56m

Washington, D.C. Dulles Intl

Thu 29/1

9:45 a.m.-9:21 p.m.

2 stops11h 36m

C$ 670

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sun 25/1

9:50 a.m.-8:54 p.m.

2 stops11h 04m

Washington, D.C. Dulles Intl

Thu 29/1

9:45 a.m.-5:05 p.m.

2 stops7h 20m

C$ 674

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 13/1

9:50 a.m.-3:46 p.m.

1 stop5h 56m

Washington, D.C. Dulles Intl

Fri 16/1

4:30 p.m.-9:20 p.m.

1 stop4h 50m

C$ 685

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 13/1

5:10 a.m.-11:49 a.m.

2 stops6h 39m

Washington, D.C. Dulles Intl

Fri 16/1

4:30 p.m.-9:20 p.m.

1 stop4h 50m

C$ 769

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 13/1

9:50 a.m.-5:35 p.m.

2 stops7h 45m

Washington, D.C. Dulles Intl

Fri 16/1

8:29 a.m.-5:05 p.m.

2 stops8h 36m

C$ 777

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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. Dulles Intl Airport

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

What is the cheapest airline that flies from London to Washington, D.C. Dulles Intl?

Air Canada and United Airlines are the most popular carriers operating from London to Washington, D.C. Dulles Intl

Which airlines fly to Washington, D.C. Dulles Intl Airport?

Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from London, Ontario according to our data. Air Canada is the first choice among our users, with 74% of people opting to fly with this airline when travelling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 5 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

When to book flights from London, Ontario to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London, Ontario to Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport (YXU to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London, Ontario to Washington, D.C. Dulles Intl Airport

Fastest flight time

5h 56m

Direct flights

None
The fastest flight from London, Ontario to Washington, D.C. Dulles Intl Airport takes 5h 56m
There are no direct flights from London, Ontario to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from London, Ontario to Washington, D.C. Dulles Intl Airport.
Search flight deals

  • How far is London to Washington, D.C. Dulles Intl by plane?

    The distance between London and Washington, D.C. Dulles Intl is about 549.2 km. 5h 56m is a normal flight duration for this route.

  • When did momondo last update prices for flights from London Airport to Washington, D.C. Dulles Intl Airport?

    Prices for flights from London Airport to Washington, D.C. Dulles Intl Airport refresh daily.

  • How old do you have to be to fly from London Airport to Washington, D.C. Dulles Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Gettysburg
Alexandria
Fairfax
Linthicum Heights
Silver Spring
Bethesda
Gaithersburg
Reston
Herndon
Laurel
Chantilly
Arlington
Capitol Heights
Winchester
Leesburg
Manassas
Fredericksburg
Ashburn
Woodbridge
Rockville

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from London.

Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington, D.C. from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Washington, D.C.?

Once you have performed a search for London to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from London to Washington, D.C. right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

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