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Cheap flights from London, Ontario to Washington, D.C. from $296

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 9/10. 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

WestJet Logo
6:00 am - 5:50 pmYXU-IAD
11h 50m1 stop
WestJet Logo
6:45 pm - 5:12 amIAD-YXU
10h 27m1 stop
$362WestJet
Find Deal
Mon, Sep 22 - Mon, Sep 29
Logo
6:00 am - 5:50 pmYXU-IAD
11h 50m1 stop
Logo
9:45 am - 5:12 amIAD-YXU
19h 27m3 stops
$417
Find Deal
Mon, Sep 22 - Mon, Sep 29
Logo
6:00 am - 5:50 pmYXU-IAD
11h 50m1 stop
Logo
2:25 pm - 5:12 amIAD-YXU
14h 47m2 stops
$418
Find Deal
Mon, Sep 22 - Mon, Sep 29
Logo
9:55 am - 2:25 pmYXU-IAD
4h 30m1 stop
Logo
3:41 pm - 9:29 pmIAD-YXU
5h 48m1 stop
$626
Find Deal
Wed, Sep 3 - Mon, Sep 8
Logo
9:55 am - 4:28 pmYXU-IAD
6h 33m2 stops
Logo
3:41 pm - 9:29 pmIAD-YXU
5h 48m1 stop
$647
Find Deal
Wed, Sep 3 - Mon, Sep 8
Air Canada Logo
9:55 am - 4:28 pmYXU-IAD
6h 33m2 stops
Air Canada Logo
8:16 am - 3:17 pmIAD-YXU
7h 01m2 stops
$668Air Canada
Find Deal
Wed, Sep 3 - Mon, Sep 8
Air Canada Logo
9:25 am - 3:54 pmYXU-IAD
6h 29m1 stop
Air Canada Logo
4:30 pm - 9:21 pmIAD-YXU
4h 51m1 stop
$729Air Canada
Find Deal
Sun, Nov 16 - Sun, Nov 23
United Airlines Logo
5:40 pm - 7:27 amYXU-IAD
13h 47m2 stops
United Airlines Logo
6:30 am - 5:06 pmIAD-YXU
10h 36m2 stops
$741United Airlines
Find Deal
Sun, Nov 16 - Sun, Nov 23

Air Canada flights from London, Ontario to Washington, D.C. Dulles Intl Airport

Our best Air Canada deals on London, Ontario to Washington, D.C. Dulles Intl Airport flight tickets
Air Canada
Sep 3
YXU9:55 amLondon
6h 33m
2 stops
IAD4:28 pmWashington, D.C. Dulles Intl
Sep 8
IAD8:16 amWashington, D.C. Dulles Intl
7h 01m
2 stops
YXU3:17 pmLondon
$668
Find similar
Air Canada
Nov 16
YXU9:25 amLondon
6h 29m
1 stop
IAD3:54 pmWashington, D.C. Dulles Intl
Nov 23
IAD4:30 pmWashington, D.C. Dulles Intl
4h 51m
1 stop
YXU9:21 pmLondon
$729
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London, Ontario to Washington, D.C. Dulles Intl Airport 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 August 2, 2025.
Use the filters below to find and compare flights from London, Ontario to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 9/22

6:00 am-5:50 pm

1 stop11h 50m

Washington, D.C. Dulles Intl

Mon 9/29

6:45 pm-5:12 am

1 stop10h 27m

$362

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 9/22

6:00 am-5:50 pm

1 stop11h 50m

Washington, D.C. Dulles Intl

Mon 9/29

9:45 am-5:12 am

3 stops19h 27m

$417

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 9/22

6:00 am-5:50 pm

1 stop11h 50m

Washington, D.C. Dulles Intl

Mon 9/29

2:25 pm-5:12 am

2 stops14h 47m

$418

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 9/3

9:55 am-2:25 pm

1 stop4h 30m

Washington, D.C. Dulles Intl

Mon 9/8

3:41 pm-9:29 pm

1 stop5h 48m

$626

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 9/3

9:55 am-4:28 pm

2 stops6h 33m

Washington, D.C. Dulles Intl

Mon 9/8

3:41 pm-9:29 pm

1 stop5h 48m

$647

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 9/3

9:55 am-4:28 pm

2 stops6h 33m

Washington, D.C. Dulles Intl

Mon 9/8

8:16 am-3:17 pm

2 stops7h 01m

$668

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sun 11/16

9:25 am-3:54 pm

1 stop6h 29m

Washington, D.C. Dulles Intl

Sun 11/23

4:30 pm-9:21 pm

1 stop4h 51m

$729

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sun 11/16

5:40 pm-7:27 am

2 stops13h 47m

Washington, D.C. Dulles Intl

Sun 11/23

6:30 am-5:06 pm

2 stops10h 36m

$741

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Wed 9/10

6:00 am-10:16 am

2 stops28h 16m

$296

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Tue 9/16

10:00 am-2:25 pm

1 stop4h 25m

$327

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. Dulles Intl Airport

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. Dulles Intl?

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

When to book flights from London, Ontario to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London, Ontario to Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport (YXU to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London, Ontario to Washington, D.C. Dulles Intl Airport

Best Price Found

$296

Fastest flight time

3h 38m

Direct flights

None
The best one-way flight to Washington, D.C. Dulles Intl Airport from London, Ontario in the past 72 hours is $296. The best round-trip flight deal from London, Ontario to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $362.
The fastest flight from London, Ontario to Washington, D.C. Dulles Intl Airport takes 3h 38m
There are no direct flights from London, Ontario to Washington, D.C. Dulles Intl Airport. Popular non-direct route for this connection is London Airport - Washington, D.C. Dulles Intl Airport.
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  • How far is London to Washington, D.C. Dulles Intl by plane?

    Washington, D.C. Dulles Intl is 341.3 mi away from London. Flights usually cover this in 4h 30m, 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. Dulles Intl Airport?

    Prices for flights from London Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted 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
Gettysburg
Arlington
National Harbor
Winchester
Woodbridge
Laurel
Tysons
Silver Spring
Waldorf
Fredericksburg
Manassas
Harpers Ferry
Towson
Rockville
Colonial Beach
Gaithersburg
Fairfax
Reston
Glen Burnie

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington, D.C.?

Finding the right flight to Washington, D.C. from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Washington, D.C. flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Washington, D.C. from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of London to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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

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