Cheap flights from London, Ontario to Washington, D.C. from $260

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 1/14. 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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Air Canada Logo
5:40 pm - 10:35 pmYXU-DCA
4h 55m1 stop
Air Canada Logo
11:05 am - 9:20 pmDCA-YXU
10h 15m2 stops
$374Air Canada
Find Deal
Thu, Jan 22 - Sat, Jan 24
Air Canada Logo
9:50 am - 3:46 pmYXU-IAD
5h 56m1 stop
Air Canada Logo
4:30 pm - 9:20 pmIAD-YXU
4h 50m1 stop
$374Air Canada
Find Deal
Thu, Jan 22 - Mon, Jan 26
Air Canada Logo
5:40 pm - 10:35 pmYXU-DCA
4h 55m1 stop
Air Canada Logo
6:59 am - 9:20 pmDCA-YXU
14h 21m1 stop
$410Air Canada
Find Deal
Thu, Jan 22 - Sat, Jan 24
Air Canada Logo
9:50 am - 3:46 pmYXU-IAD
5h 56m1 stop
Air Canada Logo
4:30 pm - 9:20 pmIAD-YXU
4h 50m1 stop
$468Air Canada
Find Deal
Thu, Jan 22 - Mon, Jan 26
Air Canada Logo
9:50 am - 3:46 pmYXU-IAD
5h 56m1 stop
Air Canada Logo
4:30 pm - 9:20 pmIAD-YXU
4h 50m1 stop
$469Air Canada
Find Deal
Thu, Jan 22 - Mon, Jan 26
Air Canada Logo
5:10 am - 12:19 pmYXU-DCA
7h 09m2 stops
Air Canada Logo
11:05 am - 9:20 pmDCA-YXU
10h 15m2 stops
$471Air Canada
Find Deal
Thu, Jan 22 - Sat, Jan 24
United Airlines Logo
9:25 am - 11:19 pmYXU-IAD
13h 54m2 stops
United Airlines Logo
4:30 pm - 9:21 pmIAD-YXU
4h 51m1 stop
$570United Airlines
Find Deal
Sun, Mar 22 - Sat, Mar 28
United Airlines Logo
9:25 am - 11:19 pmYXU-IAD
13h 54m2 stops
United Airlines Logo
6:00 am - 9:21 pmIAD-YXU
15h 21m2 stops
$628United Airlines
Find Deal
Sun, Mar 22 - Sat, Mar 28
United Airlines Logo
5:10 am - 2:11 pmYXU-BWI
9h 01m2 stops
United Airlines Logo
10:05 am - 9:21 pmBWI-YXU
11h 16m2 stops
$643United Airlines
Find Deal
Tue, Jan 20 - Thu, Jan 22
Multiple Airlines Logo
8:10 pm - 11:59 pmYXU-BWI
27h 49m3 stops
Multiple Airlines Logo
10:57 am - 7:13 pmBWI-YXU
32h 16m3 stops
$1,093Multiple Airlines
Find Deal
Sun, Mar 22 - Sat, Mar 28

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
Jan 22
YXU9:50 amLondon
5h 56m
1 stop
IAD3:46 pmWashington, D.C. Dulles Intl
Jan 26
IAD4:30 pmWashington, D.C. Dulles Intl
4h 50m
1 stop
YXU9:20 pmLondon
Air Canada
Jan 22
YXU5:40 pmLondon
4h 55m
1 stop
DCA10:35 pmWashington, D.C. Reagan-National
Jan 24
DCA6:59 amWashington, D.C. Reagan-National
14h 21m
1 stop
YXU9:20 pmLondon
Air Canada
Jan 22
YXU9:50 amLondon
5h 56m
1 stop
IAD3:46 pmWashington, D.C. Dulles Intl
Jan 26
IAD4:30 pmWashington, D.C. Dulles Intl
4h 50m
1 stop
YXU9:20 pmLondon

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
Mar 22
YXU9:25 amLondon
13h 54m
2 stops
IAD11:19 pmWashington, D.C. Dulles Intl
Mar 28
IAD4:30 pmWashington, D.C. Dulles Intl
4h 51m
1 stop
YXU9:21 pmLondon
United Airlines
Mar 22
YXU9:25 amLondon
13h 54m
2 stops
IAD11:19 pmWashington, D.C. Dulles Intl
Mar 28
IAD6:00 amWashington, D.C. Dulles Intl
15h 21m
2 stops
YXU9:21 pmLondon
United Airlines
Jan 20
YXU5:10 amLondon
9h 01m
2 stops
BWI2:11 pmBaltimore/Washington
Jan 22
BWI10:05 amBaltimore/Washington
11h 16m
2 stops
YXU9:21 pmLondon

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 832,500 searches. Data last updated December 3, 2025.
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

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 1/22

5:40 pm-10:35 pm

1 stop4h 55m

Washington, D.C. Reagan-National

Sat 1/24

11:05 am-9:20 pm

2 stops10h 15m

$374

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Thu 1/22

9:50 am-3:46 pm

1 stop5h 56m

Washington, D.C. Dulles Intl

Mon 1/26

4:30 pm-9:20 pm

1 stop4h 50m

$374

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 1/22

5:40 pm-10:35 pm

1 stop4h 55m

Washington, D.C. Reagan-National

Sat 1/24

6:59 am-9:20 pm

1 stop14h 21m

$410

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Thu 1/22

9:50 am-3:46 pm

1 stop5h 56m

Washington, D.C. Dulles Intl

Mon 1/26

4:30 pm-9:20 pm

1 stop4h 50m

$468

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Thu 1/22

9:50 am-3:46 pm

1 stop5h 56m

Washington, D.C. Dulles Intl

Mon 1/26

4:30 pm-9:20 pm

1 stop4h 50m

$469

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 1/22

5:10 am-12:19 pm

2 stops7h 09m

Washington, D.C. Reagan-National

Sat 1/24

11:05 am-9:20 pm

2 stops10h 15m

$471

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sun 3/22

9:25 am-11:19 pm

2 stops13h 54m

Washington, D.C. Dulles Intl

Sat 3/28

4:30 pm-9:21 pm

1 stop4h 51m

$570

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sun 3/22

9:25 am-11:19 pm

2 stops13h 54m

Washington, D.C. Dulles Intl

Sat 3/28

6:00 am-9:21 pm

2 stops15h 21m

$628

LondonBaltimore

YXU - BWI

YXUBWI

London

Tue 1/20

5:10 am-2:11 pm

2 stops9h 01m

Baltimore/Washington

Thu 1/22

10:05 am-9:21 pm

2 stops11h 16m

$643

LondonBaltimore

YXU - BWI

YXUBWI

London

Sun 3/22

8:10 pm-11:59 pm

3 stops27h 49m

Baltimore/Washington

Sat 3/28

10:57 am-7:13 pm

3 stops32h 16m

$1,093

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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

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

United Airlines is the most popular carrier operating from London to Washington, D.C.

What airlines fly to Washington, D.C.?

Air Canada, United Airlines and WestJet are the top three most popular airlines that fly to Washington, D.C. from London, Ontario according to our data. Air Canada is the first choice among our users, with 72% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. 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.

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 55m

Direct flights

None
The fastest flight from London, Ontario to Washington, D.C. takes 4h 55m
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..
  • How far is London to Washington, D.C. by plane?

    The distance between London and Washington, D.C. is about 356.5 mi. Flights usually cover this in 3h 45m, depending on flying conditions and air traffic around both airports.

  • 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. are refreshed on a daily basis.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Washington, D.C. 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.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Reston
Manassas
Gaithersburg
Fairfax
Glen Burnie
Linthicum Heights
Springfield

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?

Yes. momondo enables you to select and highlight flights to Washington, D.C. from London with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Washington, D.C..

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

Price alerts on flights to Washington, D.C. from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Washington, D.C. trip

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1 adult
Fri 1/2
Fri 1/9

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 22.4 mi from Washington, D.C.