Which airlines fly to Washington, D.C.?

Air Canada, United Airlines and WestJet 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 70% of people opting to fly with this airline when travelling to Washington, D.C.. Keep in mind that there are 7 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from London to Washington, D.C.?

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

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. refresh daily.

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

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..

What documentation or ID do you need to fly to Washington, D.C.?

The travel and health documents required for your trip to Washington, D.C. 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 Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 356 Cheap Flights from London to Washington, D.C. in 2025/26

1 adult

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

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:25 a.m. - 3:46 p.m.YXU-IAD

6h 21m1 stop

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

4h 51m1 stop

C$ 621Air Canada

Find Deal

Thu, 18 Dec - Thu, 25 Dec

5:10 a.m. - 12:19 p.m.YXU-DCA

7h 09m2 stops

9:40 a.m. - 5:05 p.m.DCA-YXU

7h 25m1 stop

C$ 648Air Canada

Find Deal

Thu, 18 Dec - Thu, 25 Dec

5:10 a.m. - 8:55 a.m.YXU-DCA

3h 45m1 stop

9:40 a.m. - 9:21 p.m.DCA-YXU

11h 41m1 stop

C$ 651Air Canada

Find Deal

Thu, 18 Dec - Thu, 25 Dec

5:10 a.m. - 8:59 a.m.YXU-DCA

3h 49m1 stop

12:55 p.m. - 9:18 p.m.DCA-YXU

8h 23m2 stops

C$ 655Air Canada

Find Deal

Fri, 24 Apr - Mon, 27 Apr

9:25 a.m. - 3:39 p.m.YXU-IAD

6h 14m1 stop

9:55 a.m. - 9:18 p.m.IAD-YXU

11h 23m2 stops

C$ 655Air Canada

Find Deal

Fri, 24 Apr - Tue, 28 Apr

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

11h 01m1 stop

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

4h 51m1 stop

C$ 686Air Canada

Find Deal

Sat, 27 Dec - Wed, 31 Dec

5:10 a.m. - 8:55 a.m.YXU-DCA

3h 45m1 stop

6:00 a.m. - 5:05 p.m.DCA-YXU

11h 05m2 stops

C$ 739United Airlines

Find Deal

Thu, 1 Jan - Thu, 8 Jan

9:25 a.m. - 3:46 p.m.YXU-IAD

6h 21m1 stop

8:15 a.m. - 9:21 p.m.IAD-YXU

13h 06m2 stops

C$ 771United Airlines

Find Deal

Sat, 27 Dec - Wed, 31 Dec

9:25 a.m. - 11:06 p.m.YXU-IAD

13h 41m2 stops

8:15 a.m. - 9:21 p.m.IAD-YXU

13h 06m2 stops

C$ 796United Airlines

Find Deal

Sat, 27 Dec - Wed, 31 Dec

5:10 a.m. - 12:19 p.m.YXU-DCA

7h 09m2 stops

6:59 a.m. - 6:34 a.m.DCA-YXU

23h 35m3 stops

C$ 1,666Multiple Airlines

Find Deal

Thu, 18 Dec - Thu, 25 Dec

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

1 Jan

YXU5:10 a.m.London

3h 45m

1 stop

DCA8:55 a.m.Washington, D.C. Reagan-National

8 Jan

DCA6:00 a.m.Washington, D.C. Reagan-National

11h 05m

2 stops

YXU5:05 p.m.London

C$ 739

Find similar

United Airlines

27 Dec

YXU9:25 a.m.London

6h 21m

1 stop

IAD3:46 p.m.Washington, D.C. Dulles Intl

31 Dec

IAD8:15 a.m.Washington, D.C. Dulles Intl

13h 06m

2 stops

YXU9:21 p.m.London

C$ 771

Find similar

United Airlines

27 Dec

YXU9:25 a.m.London

13h 41m

2 stops

IAD11:06 p.m.Washington, D.C. Dulles Intl

31 Dec

IAD8:15 a.m.Washington, D.C. Dulles Intl

13h 06m

2 stops

YXU9:21 p.m.London

C$ 796

Find similar

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

18 Dec

YXU9:25 a.m.London

6h 21m

1 stop

IAD3:46 p.m.Washington, D.C. Dulles Intl

25 Dec

IAD4:30 p.m.Washington, D.C. Dulles Intl

4h 51m

1 stop

YXU9:21 p.m.London

C$ 621

Find similar

Air Canada

18 Dec

YXU5:10 a.m.London

7h 09m

2 stops

DCA12:19 p.m.Washington, D.C. Reagan-National

25 Dec

DCA9:40 a.m.Washington, D.C. Reagan-National

7h 25m

1 stop

YXU5:05 p.m.London

C$ 648

Find similar

Air Canada

18 Dec

YXU5:10 a.m.London

3h 45m

1 stop

DCA8:55 a.m.Washington, D.C. Reagan-National

25 Dec

DCA9:40 a.m.Washington, D.C. Reagan-National

11h 41m

1 stop

YXU9:21 p.m.London

C$ 651

Find similar

momondo Fare Finder

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

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Thu 18/12

9:25 a.m.-3:46 p.m.

1 stop6h 21m

Washington, D.C. Dulles Intl

Thu 25/12

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

1 stop4h 51m

C$ 621

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 18/12

5:10 a.m.-12:19 p.m.

2 stops7h 09m

Washington, D.C. Reagan-National

Thu 25/12

9:40 a.m.-5:05 p.m.

1 stop7h 25m

C$ 648

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 18/12

5:10 a.m.-8:55 a.m.

1 stop3h 45m

Washington, D.C. Reagan-National

Thu 25/12

9:40 a.m.-9:21 p.m.

1 stop11h 41m

C$ 651

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Fri 24/4

5:10 a.m.-8:59 a.m.

1 stop3h 49m

Washington, D.C. Reagan-National

Mon 27/4

12:55 p.m.-9:18 p.m.

2 stops8h 23m

C$ 655

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Fri 24/4

9:25 a.m.-3:39 p.m.

1 stop6h 14m

Washington, D.C. Dulles Intl

Tue 28/4

9:55 a.m.-9:18 p.m.

2 stops11h 23m

C$ 655

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sat 27/12

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

1 stop11h 01m

Washington, D.C. Dulles Intl

Wed 31/12

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

1 stop4h 51m

C$ 686

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 1/1

5:10 a.m.-8:55 a.m.

1 stop3h 45m

Washington, D.C. Reagan-National

Thu 8/1

6:00 a.m.-5:05 p.m.

2 stops11h 05m

C$ 739

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sat 27/12

9:25 a.m.-3:46 p.m.

1 stop6h 21m

Washington, D.C. Dulles Intl

Wed 31/12

8:15 a.m.-9:21 p.m.

2 stops13h 06m

C$ 771

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sat 27/12

9:25 a.m.-11:06 p.m.

2 stops13h 41m

Washington, D.C. Dulles Intl

Wed 31/12

8:15 a.m.-9:21 p.m.

2 stops13h 06m

C$ 796

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Thu 18/12

5:10 a.m.-12:19 p.m.

2 stops7h 09m

Washington, D.C. Reagan-National

Thu 25/12

6:59 a.m.-6:34 a.m.

3 stops23h 35m

C$ 1,666

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the morning is the cheapest time of day to fly from London, Ontario to Washington, D.C. when you can find flight prices for as low as C$ 652. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. At noon is when there is more demand to fly to Washington, D.C., so prices are often more expensive at around C$ 689 per ticket.

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.

Direct flights	None

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?
London and Washington, D.C. are 573.8 km apart from one another. A reasonable flight in good conditions will take 3h 45m.
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. refresh daily.
How old do you have to be to fly from London Airport to Washington, D.C.?
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..
What documentation or ID do you need to fly to Washington, D.C.?
The travel and health documents required for your trip to Washington, D.C. 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 Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Gettysburg

Alexandria

Fairfax

Linthicum Heights

Silver Spring

Bethesda

Reston

Herndon

Laurel

Capitol Heights

Arlington

Manassas

Fredericksburg

Woodbridge

Rockville

McLean

National Harbor

Tysons

Why use momondo?

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

It is quick and easy to find London to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.

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

All flight searches from London to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between London and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Washington, D.C. from London. 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.