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Cheap flights from London, Ontario to Washington, D.C. from $273

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 6/2. 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
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
5:10 am - 12:00 pm
YXU
-
DCA
6h 50m
2 stops
Air Canada Logo
12:40 pm - 9:37 pm
DCA
-
YXU
8h 57m
2 stops
$514Air Canada
Wed, Jun 24 - Sat, Jun 27
Air Canada Logo
9:30 am - 3:24 pm
YXU
-
IAD
5h 54m
1 stop
Air Canada Logo
9:55 am - 2:55 pm
IAD
-
YXU
5h 00m
1 stop
$514Air Canada
Tue, Jun 30 - Sat, Jul 4
Air Canada Logo
5:10 am - 12:00 pm
YXU
-
DCA
6h 50m
2 stops
Air Canada Logo
12:40 pm - 9:37 pm
DCA
-
YXU
8h 57m
2 stops
$515Air Canada
Wed, Jun 24 - Sat, Jun 27
Air Canada Logo
9:30 am - 3:24 pm
YXU
-
IAD
5h 54m
1 stop
Air Canada Logo
4:20 pm - 9:40 pm
IAD
-
YXU
5h 20m
1 stop
$515Air Canada
Tue, Jun 30 - Sat, Jul 4
Air Canada Logo
12:20 pm - 6:13 pm
YXU
-
DCA
5h 53m
1 stop
Air Canada Logo
6:59 am - 11:43 am
DCA
-
YXU
4h 44m
1 stop
$516Air Canada
Thu, Jun 4 - Thu, Jun 11
Air Canada Logo
5:10 am - 3:01 pm
YXU
-
IAD
9h 51m
2 stops
Air Canada Logo
9:55 am - 2:55 pm
IAD
-
YXU
5h 00m
1 stop
$518Air Canada
Tue, Jun 30 - Sat, Jul 4
United Airlines Logo
5:10 am - 1:04 pm
YXU
-
DCA
7h 54m
2 stops
United Airlines Logo
6:59 am - 11:43 am
DCA
-
YXU
4h 44m
1 stop
$604United Airlines
Thu, Jun 4 - Thu, Jun 11
United Airlines Logo
12:20 pm - 8:10 pm
YXU
-
DCA
7h 50m
2 stops
United Airlines Logo
7:30 am - 2:58 pm
DCA
-
YXU
7h 28m
2 stops
$634United Airlines
Thu, Jun 4 - Thu, Jun 11
United Airlines Logo
12:20 pm - 4:13 pm
YXU
-
IAD
3h 53m
1 stop
United Airlines Logo
6:33 am - 2:58 pm
IAD
-
YXU
8h 25m
2 stops
$647United Airlines
Thu, Jun 4 - Thu, Jun 11
Multiple Airlines Logo
5:55 pm - 8:35 am
YXU
-
BWI
38h 40m
3 stops
Multiple Airlines Logo
12:25 pm - 5:20 am
BWI
-
YXU
16h 55m
3 stops
$903Multiple Airlines
Thu, Jun 4 - Thu, Jun 11

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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
Jun 30
YXU9:30 amLondon
5h 54m
1 stop
IAD3:24 pmWashington, D.C. Dulles Intl
Jul 4
IAD9:55 amWashington, D.C. Dulles Intl
5h 00m
1 stop
YXU2:55 pmLondon
$514
Air Canada
Jun 30
YXU9:30 amLondon
5h 54m
1 stop
IAD3:24 pmWashington, D.C. Dulles Intl
Jul 4
IAD4:20 pmWashington, D.C. Dulles Intl
5h 20m
1 stop
YXU9:40 pmLondon
$515
Air Canada
Jun 4
YXU12:20 pmLondon
5h 53m
1 stop
DCA6:13 pmWashington, D.C. Reagan-National
Jun 11
DCA6:59 amWashington, D.C. Reagan-National
4h 44m
1 stop
YXU11:43 amLondon
$516

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
Jun 4
YXU5:10 amLondon
7h 54m
2 stops
DCA1:04 pmWashington, D.C. Reagan-National
Jun 11
DCA6:59 amWashington, D.C. Reagan-National
4h 44m
1 stop
YXU11:43 amLondon
$604
United Airlines
Jun 4
YXU12:20 pmLondon
7h 50m
2 stops
DCA8:10 pmWashington, D.C. Reagan-National
Jun 11
DCA7:30 amWashington, D.C. Reagan-National
7h 28m
2 stops
YXU2:58 pmLondon
$634
United Airlines
Jun 4
YXU12:20 pmLondon
3h 53m
1 stop
IAD4:13 pmWashington, D.C. Dulles Intl
Jun 11
IAD6:33 amWashington, D.C. Dulles Intl
8h 25m
2 stops
YXU2:58 pmLondon
$647

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 April 21, 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

Wed 6/24

5:10 am-12:00 pm

2 stops6h 50m

Washington, D.C. Reagan-National

Sat 6/27

12:40 pm-9:37 pm

2 stops8h 57m

$514

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 6/30

9:30 am-3:24 pm

1 stop5h 54m

Washington, D.C. Dulles Intl

Sat 7/4

9:55 am-2:55 pm

1 stop5h 00m

$514

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Wed 6/24

5:10 am-12:00 pm

2 stops6h 50m

Washington, D.C. Reagan-National

Sat 6/27

12:40 pm-9:37 pm

2 stops8h 57m

$515

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 6/30

9:30 am-3:24 pm

1 stop5h 54m

Washington, D.C. Dulles Intl

Sat 7/4

4:20 pm-9:40 pm

1 stop5h 20m

$515
Quickest round-trip

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 6/4

12:20 pm-6:13 pm

1 stop5h 53m

Washington, D.C. Reagan-National

Thu 6/11

6:59 am-11:43 am

1 stop4h 44m

$516

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 6/30

5:10 am-3:01 pm

2 stops9h 51m

Washington, D.C. Dulles Intl

Sat 7/4

9:55 am-2:55 pm

1 stop5h 00m

$518

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 6/4

5:10 am-1:04 pm

2 stops7h 54m

Washington, D.C. Reagan-National

Thu 6/11

6:59 am-11:43 am

1 stop4h 44m

$604

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 6/4

12:20 pm-8:10 pm

2 stops7h 50m

Washington, D.C. Reagan-National

Thu 6/11

7:30 am-2:58 pm

2 stops7h 28m

$634

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Thu 6/4

12:20 pm-4:13 pm

1 stop3h 53m

Washington, D.C. Dulles Intl

Thu 6/11

6:33 am-2:58 pm

2 stops8h 25m

$647

LondonBaltimore

YXU - BWI

YXUBWI

London

Thu 6/4

5:55 pm-8:35 am

3 stops38h 40m

Baltimore/Washington

Thu 6/11

12:25 pm-5:20 am

3 stops16h 55m

$903

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

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 69% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 6 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 43m

Direct flights

None
The fastest flight from London, Ontario to Washington, D.C. takes 3h 43m
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

Frequently asked questions about flying 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 43m, 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
Laurel
Colonial Beach
Gaithersburg
Towson
Fredericksburg
Silver Spring
Rockville
Manassas
Tysons
Linthicum Heights
Bethesda
Fairfax
Springfield
College Park

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.
Start using Trips
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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