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Cheap flights from London, Ontario to Washington, D.C. from $280

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 7/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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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
10:05 am - 3:24 pm
YXU
-
IAD
5h 19m
1 stop
Air Canada Logo
4:20 pm - 8:32 pm
IAD
-
YXU
4h 12m
1 stop
$501Air Canada
Thu, Jul 23 - Sat, Aug 1
Air Canada Logo
10:05 am - 7:01 pm
YXU
-
IAD
8h 56m
2 stops
Air Canada Logo
9:55 am - 2:52 pm
IAD
-
YXU
4h 57m
1 stop
$504Air Canada
Thu, Jul 23 - Sat, Aug 1
Air Canada Logo
3:25 pm - 7:57 pm
YXU
-
DCA
4h 32m
1 stop
Air Canada Logo
9:40 am - 3:06 pm
DCA
-
YXU
5h 26m
1 stop
$597Air Canada
Wed, Dec 2 - Sat, Dec 5
Air Canada Logo
9:45 am - 3:50 pm
YXU
-
IAD
6h 05m
1 stop
Air Canada Logo
4:30 pm - 9:46 pm
IAD
-
YXU
5h 16m
1 stop
$597Air Canada
Wed, Dec 2 - Sat, Dec 5
Air Canada Logo
9:45 am - 8:23 pm
YXU
-
IAD
10h 38m
2 stops
Air Canada Logo
9:55 am - 3:06 pm
IAD
-
YXU
5h 11m
1 stop
$601Air Canada
Wed, Dec 2 - Sat, Dec 5
Air Canada Logo
5:10 am - 8:52 am
YXU
-
DCA
3h 42m
1 stop
Air Canada Logo
11:00 am - 2:52 pm
DCA
-
YXU
3h 52m
1 stop
$608Air Canada
Fri, Jul 3 - Fri, Jul 10
Air Canada Logo
10:05 am - 3:24 pm
YXU
-
IAD
5h 19m
1 stop
Air Canada Logo
9:55 am - 2:57 pm
IAD
-
YXU
5h 02m
1 stop
$608Air Canada
Fri, Jun 19 - Sun, Jun 21
Air Canada Logo
3:30 pm - 9:48 pm
YXU
-
DCA
6h 18m
2 stops
Air Canada Logo
11:00 am - 2:52 pm
DCA
-
YXU
3h 52m
1 stop
$616Air Canada
Sat, Jul 18 - Sat, Jul 25
United Airlines Logo
10:05 am - 10:54 pm
YXU
-
DCA
12h 49m
2 stops
United Airlines Logo
11:00 am - 2:52 pm
DCA
-
YXU
3h 52m
1 stop
$679United Airlines
Fri, Jul 3 - Fri, Jul 10
United Airlines Logo
9:45 am - 8:57 pm
YXU
-
BWI
11h 12m
2 stops
United Airlines Logo
10:45 am - 9:46 pm
BWI
-
YXU
11h 01m
2 stops
$772United Airlines
Wed, Dec 2 - Sat, Dec 5

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
Aug 24
YXU3:30 pmLondon
4h 54m
1 stop
IAD8:24 pmWashington, D.C. Dulles Intl
Sep 3
IAD6:16 amWashington, D.C. Dulles Intl
8h 39m
2 stops
YXU2:55 pmLondon
$701
United Airlines
Aug 24
YXU3:30 pmLondon
7h 29m
2 stops
IAD10:59 pmWashington, D.C. Dulles Intl
Sep 3
IAD6:16 amWashington, D.C. Dulles Intl
8h 39m
2 stops
YXU2:55 pmLondon
$706
United Airlines
Jul 3
YXU10:05 amLondon
5h 19m
1 stop
IAD3:24 pmWashington, D.C. Dulles Intl
Jul 10
IAD10:20 pmWashington, D.C. Dulles Intl
16h 32m
2 stops
YXU2:52 pmLondon
$724

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
Jul 23
YXU10:05 amLondon
5h 19m
1 stop
IAD3:24 pmWashington, D.C. Dulles Intl
Aug 1
IAD4:20 pmWashington, D.C. Dulles Intl
4h 12m
1 stop
YXU8:32 pmLondon
$501
Air Canada
Jul 23
YXU10:05 amLondon
8h 56m
2 stops
IAD7:01 pmWashington, D.C. Dulles Intl
Aug 1
IAD9:55 amWashington, D.C. Dulles Intl
4h 57m
1 stop
YXU2:52 pmLondon
$504
Air Canada
Dec 2
YXU9:45 amLondon
6h 05m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
Dec 5
IAD4:30 pmWashington, D.C. Dulles Intl
5h 16m
1 stop
YXU9:46 pmLondon
$624

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 June 8, 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 - IAD

YXUIAD

London

Thu 7/23

10:05 am-3:24 pm

1 stop5h 19m

Washington, D.C. Dulles Intl

Sat 8/1

4:20 pm-8:32 pm

1 stop4h 12m

$501

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Thu 7/23

10:05 am-7:01 pm

2 stops8h 56m

Washington, D.C. Dulles Intl

Sat 8/1

9:55 am-2:52 pm

1 stop4h 57m

$504

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Wed 12/2

3:25 pm-7:57 pm

1 stop4h 32m

Washington, D.C. Reagan-National

Sat 12/5

9:40 am-3:06 pm

1 stop5h 26m

$597

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 12/2

9:45 am-3:50 pm

1 stop6h 05m

Washington, D.C. Dulles Intl

Sat 12/5

4:30 pm-9:46 pm

1 stop5h 16m

$597

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 12/2

9:45 am-8:23 pm

2 stops10h 38m

Washington, D.C. Dulles Intl

Sat 12/5

9:55 am-3:06 pm

1 stop5h 11m

$601
Quickest round-trip

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Fri 7/3

5:10 am-8:52 am

1 stop3h 42m

Washington, D.C. Reagan-National

Fri 7/10

11:00 am-2:52 pm

1 stop3h 52m

$608

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Fri 6/19

10:05 am-3:24 pm

1 stop5h 19m

Washington, D.C. Dulles Intl

Sun 6/21

9:55 am-2:57 pm

1 stop5h 02m

$608

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sat 7/18

3:30 pm-9:48 pm

2 stops6h 18m

Washington, D.C. Reagan-National

Sat 7/25

11:00 am-2:52 pm

1 stop3h 52m

$616

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Fri 7/3

10:05 am-10:54 pm

2 stops12h 49m

Washington, D.C. Reagan-National

Fri 7/10

11:00 am-2:52 pm

1 stop3h 52m

$679

LondonBaltimore

YXU - BWI

YXUBWI

London

Wed 12/2

9:45 am-8:57 pm

2 stops11h 12m

Baltimore/Washington

Sat 12/5

10:45 am-9:46 pm

2 stops11h 01m

$772

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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

4h 11m

Direct flights

None
The fastest flight from London, Ontario to Washington, D.C. takes 4h 11m
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 4h 11m, 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
Gaithersburg
Fredericksburg
Colonial Beach
Silver Spring
Rockville
Towson
Linthicum Heights
Manassas
Tysons
Springfield
Fairfax
Bethesda
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