Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Washington, D.C. to London from C$ 283

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to London departing on 16/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington, D.C. to London

Cheap round-trip flights

Air Canada Logo
11:00 a.m. - 3:02 p.m.DCA-YXU
4h 02m1 stop
Air Canada Logo
5:40 p.m. - 10:35 p.m.YXU-DCA
4h 55m1 stop
C$ 683Air Canada
Find Deal
sex, 24 out - sex, 31 out
Air Canada Logo
10:20 a.m. - 3:02 p.m.IAD-YXU
4h 42m1 stop
Air Canada Logo
9:25 a.m. - 8:29 p.m.YXU-IAD
11h 04m1 stop
C$ 715Air Canada
Find Deal
sex, 24 out - sex, 31 out
Air Canada Logo
4:25 p.m. - 9:21 p.m.IAD-YXU
4h 56m1 stop
Air Canada Logo
9:25 a.m. - 3:51 p.m.YXU-IAD
6h 26m1 stop
C$ 716Air Canada
Find Deal
ter, 25 nov - sex, 28 nov
Air Canada Logo
9:45 a.m. - 5:05 p.m.IAD-YXU
7h 20m2 stops
Air Canada Logo
9:25 a.m. - 8:26 p.m.YXU-IAD
11h 01m1 stop
C$ 723Air Canada
Find Deal
ter, 25 nov - sex, 28 nov
United Airlines Logo
11:00 a.m. - 3:02 p.m.DCA-YXU
4h 02m1 stop
United Airlines Logo
9:25 a.m. - 5:25 p.m.YXU-DCA
8h 00m2 stops
C$ 867United Airlines
Find Deal
sex, 24 out - sex, 31 out
United Airlines Logo
10:20 a.m. - 3:02 p.m.IAD-YXU
4h 42m1 stop
United Airlines Logo
9:25 a.m. - 8:57 p.m.YXU-IAD
11h 32m2 stops
C$ 867United Airlines
Find Deal
sex, 24 out - sex, 31 out
Logo
9:15 a.m. - 5:12 a.m.IAD-YXU
19h 57m2 stops
Logo
6:00 a.m. - 5:50 p.m.YXU-IAD
11h 50m1 stop
C$ 874
Find Deal
ter, 23 set - sex, 26 set
Logo
4:30 p.m. - 9:21 p.m.IAD-YXU
4h 51m1 stop
Logo
5:45 a.m. - 4:21 p.m.YXU-IAD
10h 36m2 stops
C$ 905
Find Deal
qua, 10 dez - sex, 12 dez
WestJet Logo
6:45 p.m. - 5:12 a.m.IAD-YXU
10h 27m1 stop
WestJet Logo
8:00 p.m. - 5:50 p.m.YXU-IAD
21h 50m1 stop
C$ 1,164WestJet
Find Deal
sex, 26 set - dom, 28 set
WestJet Logo
6:45 p.m. - 5:12 a.m.IAD-YXU
10h 27m1 stop
WestJet Logo
6:00 a.m. - 5:50 p.m.YXU-IAD
11h 50m1 stop
C$ 1,321WestJet
Find Deal
sex, 10 out - sex, 17 out

United Airlines flights from Washington, D.C. to London, Ontario

Our best United Airlines deals on Washington, D.C. to London, Ontario flight tickets
United Airlines
24 Oct
DCA11:00 a.m.Washington, D.C. Reagan-National
4h 02m
1 stop
YXU3:02 p.m.London
31 Oct
YXU9:25 a.m.London
8h 00m
2 stops
DCA5:25 p.m.Washington, D.C. Reagan-National
C$ 867
Find similar
United Airlines
10 Dec
DCA9:05 a.m.Washington, D.C. Reagan-National
8h 00m
2 stops
YXU5:05 p.m.London
12 Dec
YXU5:40 p.m.London
4h 55m
1 stop
DCA10:35 p.m.Washington, D.C. Reagan-National
C$ 910
Find similar
United Airlines
24 Oct
IAD6:15 a.m.Washington, D.C. Dulles Intl
8h 47m
2 stops
YXU3:02 p.m.London
31 Oct
YXU9:25 a.m.London
8h 05m
2 stops
IAD5:30 p.m.Washington, D.C. Dulles Intl
C$ 919
Find similar

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

Our best Air Canada deals on Washington, D.C. to London, Ontario flight tickets
Air Canada
24 Oct
DCA11:00 a.m.Washington, D.C. Reagan-National
4h 02m
1 stop
YXU3:02 p.m.London
31 Oct
YXU5:40 p.m.London
4h 55m
1 stop
DCA10:35 p.m.Washington, D.C. Reagan-National
C$ 683
Find similar
Air Canada
24 Oct
IAD10:20 a.m.Washington, D.C. Dulles Intl
4h 42m
1 stop
YXU3:02 p.m.London
31 Oct
YXU9:25 a.m.London
11h 04m
1 stop
IAD8:29 p.m.Washington, D.C. Dulles Intl
C$ 715
Find similar
Air Canada
25 Nov
IAD4:25 p.m.Washington, D.C. Dulles Intl
4h 56m
1 stop
YXU9:21 p.m.London
28 Nov
YXU9:25 a.m.London
6h 26m
1 stop
IAD3:51 p.m.Washington, D.C. Dulles Intl
C$ 716
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to London, Ontario 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 96,600 searches. Data last updated 11 setembro 2025.
Use the filters below to find and compare flights from Washington, D.C. to London, Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

sex 24/10

11:00 a.m.-3:02 p.m.

1 stop4h 02m

London

sex 31/10

5:40 p.m.-10:35 p.m.

1 stop4h 55m

C$ 683

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

sex 24/10

10:20 a.m.-3:02 p.m.

1 stop4h 42m

London

sex 31/10

9:25 a.m.-8:29 p.m.

1 stop11h 04m

C$ 715

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

ter 25/11

4:25 p.m.-9:21 p.m.

1 stop4h 56m

London

sex 28/11

9:25 a.m.-3:51 p.m.

1 stop6h 26m

C$ 716

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

ter 25/11

9:45 a.m.-5:05 p.m.

2 stops7h 20m

London

sex 28/11

9:25 a.m.-8:26 p.m.

1 stop11h 01m

C$ 723

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

sex 24/10

11:00 a.m.-3:02 p.m.

1 stop4h 02m

London

sex 31/10

9:25 a.m.-5:25 p.m.

2 stops8h 00m

C$ 867

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

sex 24/10

10:20 a.m.-3:02 p.m.

1 stop4h 42m

London

sex 31/10

9:25 a.m.-8:57 p.m.

2 stops11h 32m

C$ 867

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

ter 23/9

9:15 a.m.-5:12 a.m.

2 stops19h 57m

London

sex 26/9

6:00 a.m.-5:50 p.m.

1 stop11h 50m

C$ 874

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

qua 10/12

4:30 p.m.-9:21 p.m.

1 stop4h 51m

London

sex 12/12

5:45 a.m.-4:21 p.m.

2 stops10h 36m

C$ 905

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

sex 26/9

6:45 p.m.-5:12 a.m.

1 stop10h 27m

London

dom 28/9

8:00 p.m.-5:50 p.m.

1 stop21h 50m

C$ 1,164

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

sex 10/10

6:45 p.m.-5:12 a.m.

1 stop10h 27m

London

sex 17/10

6:00 a.m.-5:50 p.m.

1 stop11h 50m

C$ 1,321

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. to London, Ontario

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 Washington, D.C. to London?

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

Which airlines fly to London, Ontario?

Air Canada, United Airlines and WestJet are the top three most popular airlines that fly to London, Ontario from Washington, D.C. according to our data. Air Canada is the first choice among our users, with 70% of people opting to fly with this airline when travelling to London, Ontario. Keep in mind that there are 3 different airlines that fly to London, Ontario on a routine basis, so you have a few additional options to choose from.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to London, Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to London, Ontario (WAS to YXU) flight deals and tips

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

Direct flights

None
There are no direct flights from Washington, D.C. to London, Ontario. There are no popular flight routes from Washington, D.C. to London, Ontario.
Search flight deals

  • How far is Washington, D.C. to London by plane?

    Washington, D.C. and London are 573.8 km apart from one another. In terms of flight time, this usually takes a little over 4h 02m.

  • When did momondo last update prices for flights from Washington, D.C. to London Airport?

    Prices for flights from Washington, D.C. to London Airport refresh daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to London Airport.

  • What documentation or ID do you need to fly to London Airport?

    The travel and health documents required for your trip to London Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend
Port Stanley

Why use momondo?

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

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 London from Washington, D.C..

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

momondo does allow users to show only those flights to London from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Washington, D.C. to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to London from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London, Ontario 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
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
sáb 11/10
sáb 18/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Canada