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Cheap flights from London, Ontario to Washington, D.C. from $272

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 4/19. 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
5:40 am - 12:01 pm
YXU
-
DCA
6h 21m
2 stops
Air Canada Logo
6:59 am - 11:43 am
DCA
-
YXU
4h 44m
1 stop
$461Air Canada
Sun, May 3 - Wed, May 6
Air Canada Logo
9:40 am - 3:34 pm
YXU
-
IAD
5h 54m
1 stop
Air Canada Logo
4:30 pm - 9:19 pm
IAD
-
YXU
4h 49m
1 stop
$461Air Canada
Tue, Mar 31 - Tue, Apr 7
Air Canada Logo
5:40 pm - 10:43 pm
YXU
-
DCA
5h 03m
1 stop
Air Canada Logo
6:00 am - 5:03 pm
DCA
-
YXU
11h 03m
2 stops
$464Air Canada
Mon, Mar 30 - Tue, Mar 31
Air Canada Logo
5:40 pm - 10:43 pm
YXU
-
DCA
5h 03m
1 stop
Air Canada Logo
6:00 am - 5:03 pm
DCA
-
YXU
11h 03m
2 stops
$465Air Canada
Mon, Mar 30 - Tue, Mar 31
Air Canada Logo
5:40 am - 3:03 pm
YXU
-
IAD
9h 23m
2 stops
Air Canada Logo
4:05 pm - 9:38 pm
IAD
-
YXU
5h 33m
1 stop
$465Air Canada
Wed, May 6 - Fri, May 8
Air Canada Logo
5:10 am - 3:30 pm
YXU
-
DCA
10h 20m
2 stops
Air Canada Logo
6:00 am - 5:03 pm
DCA
-
YXU
11h 03m
2 stops
$467Air Canada
Mon, Mar 30 - Tue, Mar 31
United Airlines Logo
5:10 am - 8:53 am
YXU
-
DCA
3h 43m
1 stop
United Airlines Logo
10:30 am - 9:19 pm
DCA
-
YXU
10h 49m
2 stops
$530United Airlines
Tue, Mar 31 - Tue, Apr 7
United Airlines Logo
9:40 am - 7:23 pm
YXU
-
IAD
9h 43m
2 stops
United Airlines Logo
8:23 am - 5:04 pm
IAD
-
YXU
8h 41m
2 stops
$536United Airlines
Tue, Mar 31 - Tue, Apr 7
United Airlines Logo
5:10 am - 5:33 pm
YXU
-
BWI
12h 23m
2 stops
United Airlines Logo
6:00 am - 9:19 pm
BWI
-
YXU
15h 19m
2 stops
$655United Airlines
Thu, Apr 23 - Fri, Apr 24
Multiple Airlines Logo
5:40 pm - 10:20 pm
YXU
-
BWI
28h 40m
3 stops
Multiple Airlines Logo
9:59 pm - 5:20 am
BWI
-
YXU
31h 21m
3 stops
$699Multiple Airlines
Mon, Apr 20 - Mon, Apr 27

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 31
YXU9:40 amLondon
5h 54m
1 stop
IAD3:34 pmWashington, D.C. Dulles Intl
Apr 7
IAD4:30 pmWashington, D.C. Dulles Intl
4h 49m
1 stop
YXU9:19 pmLondon
$461
Air Canada
Mar 30
YXU5:40 pmLondon
5h 03m
1 stop
DCA10:43 pmWashington, D.C. Reagan-National
Mar 31
DCA6:00 amWashington, D.C. Reagan-National
11h 03m
2 stops
YXU5:03 pmLondon
$464
Air Canada
May 6
YXU5:40 amLondon
9h 23m
2 stops
IAD3:03 pmWashington, D.C. Dulles Intl
May 8
IAD4:05 pmWashington, D.C. Dulles Intl
5h 33m
1 stop
YXU9:38 pmLondon
$465

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 31
YXU5:10 amLondon
3h 43m
1 stop
DCA8:53 amWashington, D.C. Reagan-National
Apr 7
DCA10:30 amWashington, D.C. Reagan-National
10h 49m
2 stops
YXU9:19 pmLondon
$530
United Airlines
Mar 31
YXU9:40 amLondon
9h 43m
2 stops
IAD7:23 pmWashington, D.C. Dulles Intl
Apr 7
IAD8:23 amWashington, D.C. Dulles Intl
8h 41m
2 stops
YXU5:04 pmLondon
$536
United Airlines
Apr 23
YXU5:10 amLondon
12h 23m
2 stops
BWI5:33 pmBaltimore/Washington
Apr 24
BWI6:00 amBaltimore/Washington
15h 19m
2 stops
YXU9:19 pmLondon
$655

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 March 7, 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

Sun 5/3

5:40 am-12:01 pm

2 stops6h 21m

Washington, D.C. Reagan-National

Wed 5/6

6:59 am-11:43 am

1 stop4h 44m

$461
Quickest round-trip

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 3/31

9:40 am-3:34 pm

1 stop5h 54m

Washington, D.C. Dulles Intl

Tue 4/7

4:30 pm-9:19 pm

1 stop4h 49m

$461

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

6:00 am-5:03 pm

2 stops11h 03m

$464

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

6:00 am-5:03 pm

2 stops11h 03m

$465

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 5/6

5:40 am-3:03 pm

2 stops9h 23m

Washington, D.C. Dulles Intl

Fri 5/8

4:05 pm-9:38 pm

1 stop5h 33m

$465

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Mon 3/30

5:10 am-3:30 pm

2 stops10h 20m

Washington, D.C. Reagan-National

Tue 3/31

6:00 am-5:03 pm

2 stops11h 03m

$467

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Tue 3/31

5:10 am-8:53 am

1 stop3h 43m

Washington, D.C. Reagan-National

Tue 4/7

10:30 am-9:19 pm

2 stops10h 49m

$530

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 3/31

9:40 am-7:23 pm

2 stops9h 43m

Washington, D.C. Dulles Intl

Tue 4/7

8:23 am-5:04 pm

2 stops8h 41m

$536

LondonBaltimore

YXU - BWI

YXUBWI

London

Thu 4/23

5:10 am-5:33 pm

2 stops12h 23m

Baltimore/Washington

Fri 4/24

6:00 am-9:19 pm

2 stops15h 19m

$655

LondonBaltimore

YXU - BWI

YXUBWI

London

Mon 4/20

5:40 pm-10:20 pm

3 stops28h 40m

Baltimore/Washington

Mon 4/27

9:59 pm-5:20 am

3 stops31h 21m

$699

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 and Air Canada 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 69% 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

5h 03m

Direct flights

None
The fastest flight from London, Ontario to Washington, D.C. takes 5h 03m
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..
Search flight deals

  • 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 5h 03m, 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
Colonial Beach
Laurel
Towson
Silver Spring
Gaithersburg
Fredericksburg
Rockville
Tysons
Manassas
Springfield
Bethesda
Fairfax
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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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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 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport