Cheap flights from London, Ontario to Washington, D.C. from $275

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 3/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Air Canada Logo
5:10 am - 8:53 am
YXU
-
DCA
3h 43m
1 stop
Air Canada Logo
12:55 pm - 9:18 pm
DCA
-
YXU
8h 23m
2 stops
$430Air Canada
Mon, Mar 30 - Tue, Mar 31
Air Canada Logo
9:25 am - 3:34 pm
YXU
-
IAD
6h 09m
1 stop
Air Canada Logo
4:30 pm - 9:18 pm
IAD
-
YXU
4h 48m
1 stop
$430Air Canada
Mon, Mar 30 - Tue, Mar 31
Air Canada Logo
5:40 pm - 10:35 pm
YXU
-
DCA
4h 55m
1 stop
Air Canada Logo
12:55 pm - 9:21 pm
DCA
-
YXU
8h 26m
2 stops
$433Air Canada
Sun, Mar 1 - Sun, Mar 8
Air Canada Logo
9:25 am - 7:40 pm
YXU
-
IAD
10h 15m
2 stops
Air Canada Logo
4:30 pm - 9:18 pm
IAD
-
YXU
4h 48m
1 stop
$433Air Canada
Mon, Mar 30 - Tue, Mar 31
Air Canada Logo
9:25 am - 7:40 pm
YXU
-
IAD
10h 15m
2 stops
Air Canada Logo
4:30 pm - 9:18 pm
IAD
-
YXU
4h 48m
1 stop
$434Air Canada
Mon, Mar 30 - Tue, Mar 31
Air Canada Logo
5:10 am - 12:19 pm
YXU
-
DCA
7h 09m
2 stops
Air Canada Logo
12:55 pm - 9:21 pm
DCA
-
YXU
8h 26m
2 stops
$438Air Canada
Sun, Mar 1 - Sun, Mar 8
Air Canada Logo
5:10 am - 8:55 am
YXU
-
DCA
3h 45m
1 stop
Air Canada Logo
8:40 pm - 8:46 am
DCA
-
YXU
12h 06m
1 stop
$452Air Canada
Sun, Mar 1 - Sun, Mar 8
Air Canada Logo
5:40 pm - 10:43 pm
YXU
-
DCA
5h 03m
1 stop
Air Canada Logo
9:40 am - 5:03 pm
DCA
-
YXU
7h 23m
1 stop
$467Air Canada
Mon, Mar 30 - Tue, Mar 31
United Airlines Logo
9:25 am - 9:17 pm
YXU
-
BWI
11h 52m
2 stops
United Airlines Logo
10:30 am - 9:21 pm
BWI
-
YXU
10h 51m
2 stops
$666United Airlines
Mon, Mar 2 - Wed, Mar 4
United Airlines Logo
9:25 am - 9:17 pm
YXU
-
BWI
11h 52m
2 stops
United Airlines Logo
10:30 am - 9:21 pm
BWI
-
YXU
10h 51m
2 stops
$667United Airlines
Mon, Mar 2 - Wed, Mar 4

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
Mar 30
YXU9:25 amLondon
6h 09m
1 stop
IAD3:34 pmWashington, D.C. Dulles Intl
Mar 31
IAD4:30 pmWashington, D.C. Dulles Intl
4h 48m
1 stop
YXU9:18 pmLondon
$430
Air Canada
Mar 30
YXU9:25 amLondon
10h 15m
2 stops
IAD7:40 pmWashington, D.C. Dulles Intl
Mar 31
IAD4:30 pmWashington, D.C. Dulles Intl
4h 48m
1 stop
YXU9:18 pmLondon
$433
Air Canada
Mar 30
YXU9:25 amLondon
10h 15m
2 stops
IAD7:40 pmWashington, D.C. Dulles Intl
Mar 31
IAD4:30 pmWashington, D.C. Dulles Intl
4h 48m
1 stop
YXU9:18 pmLondon
$434

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 2
YXU9:25 amLondon
11h 52m
2 stops
BWI9:17 pmBaltimore/Washington
Mar 4
BWI10:30 amBaltimore/Washington
10h 51m
2 stops
YXU9:21 pmLondon
$666
United Airlines
Mar 2
YXU5:10 amLondon
16h 07m
2 stops
BWI9:17 pmBaltimore/Washington
Mar 4
BWI10:30 amBaltimore/Washington
10h 51m
2 stops
YXU9:21 pmLondon
$667
United Airlines
Mar 2
YXU5:10 amLondon
16h 07m
2 stops
BWI9:17 pmBaltimore/Washington
Mar 4
BWI12:37 pmBaltimore/Washington
28h 28m
3 stops
YXU5:05 pmLondon
$828

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 January 16, 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

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Mon 3/30

5:10 am-8:53 am

1 stop3h 43m

Washington, D.C. Reagan-National

Tue 3/31

12:55 pm-9:18 pm

2 stops8h 23m

$430

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 3/30

9:25 am-3:34 pm

1 stop6h 09m

Washington, D.C. Dulles Intl

Tue 3/31

4:30 pm-9:18 pm

1 stop4h 48m

$430

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sun 3/1

5:40 pm-10:35 pm

1 stop4h 55m

Washington, D.C. Reagan-National

Sun 3/8

12:55 pm-9:21 pm

2 stops8h 26m

$433

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 3/30

9:25 am-7:40 pm

2 stops10h 15m

Washington, D.C. Dulles Intl

Tue 3/31

4:30 pm-9:18 pm

1 stop4h 48m

$433

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 3/30

9:25 am-7:40 pm

2 stops10h 15m

Washington, D.C. Dulles Intl

Tue 3/31

4:30 pm-9:18 pm

1 stop4h 48m

$434

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sun 3/1

5:10 am-12:19 pm

2 stops7h 09m

Washington, D.C. Reagan-National

Sun 3/8

12:55 pm-9:21 pm

2 stops8h 26m

$438

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sun 3/1

5:10 am-8:55 am

1 stop3h 45m

Washington, D.C. Reagan-National

Sun 3/8

8:40 pm-8:46 am

1 stop12h 06m

$452

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Mon 3/30

5:40 pm-10:43 pm

1 stop5h 03m

Washington, D.C. Reagan-National

Tue 3/31

9:40 am-5:03 pm

1 stop7h 23m

$467

LondonBaltimore

YXU - BWI

YXUBWI

London

Mon 3/2

9:25 am-9:17 pm

2 stops11h 52m

Baltimore/Washington

Wed 3/4

10:30 am-9:21 pm

2 stops10h 51m

$666

LondonBaltimore

YXU - BWI

YXUBWI

London

Mon 3/2

9:25 am-9:17 pm

2 stops11h 52m

Baltimore/Washington

Wed 3/4

10:30 am-9:21 pm

2 stops10h 51m

$667

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.

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.?

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

What airlines fly to Washington, D.C.?

Air Canada, United Airlines and American Airlines 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 74% 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

3h 41m

Direct flights

None
The fastest flight from London, Ontario to Washington, D.C. takes 3h 41m
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 41m, 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
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Fairfax
Glen Burnie
Linthicum Heights
Reston

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
Sun 2/15
Sun 2/22

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.