Which airlines fly to Washington, D.C.?

Air Canada, WestJet and United 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 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, United Airlines, and WestJet 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$ 343 Cheap Flights from London to Washington, D.C. in 2025/26

1 adult

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

Round-trip

One-way

Last minute

Cheap round-trip flights

6:15 a.m. - 1:38 p.m.YXU-IAD

7h 23m1 stop

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

4h 56m1 stop

C$ 659Air Canada

Find Deal

Sat, 18 Oct - Sat, 8 Nov

6:15 a.m. - 1:38 p.m.YXU-IAD

7h 23m1 stop

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

7h 20m2 stops

C$ 666Air Canada

Find Deal

Sat, 18 Oct - Sat, 8 Nov

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

4h 55m1 stop

6:30 a.m. - 5:05 p.m.DCA-YXU

10h 35m2 stops

C$ 717United Airlines

Find Deal

Sat, 1 Nov - Sat, 8 Nov

6:15 a.m. - 5:37 p.m.YXU-IAD

11h 22m2 stops

8:30 a.m. - 9:21 p.m.IAD-YXU

12h 51m2 stops

C$ 721United Airlines

Find Deal

Sat, 18 Oct - Sat, 8 Nov

9:25 a.m. - 4:46 p.m.YXU-DCA

7h 21m2 stops

7:00 a.m. - 5:05 p.m.DCA-YXU

10h 05m2 stops

C$ 724United Airlines

Find Deal

Sat, 1 Nov - Sat, 8 Nov

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

4h 55m1 stop

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

7h 25m1 stop

C$ 766United Airlines

Find Deal

Sat, 1 Nov - Sat, 8 Nov

6:00 a.m. - 7:26 p.m.YXU-IAD

13h 26m2 stops

6:13 p.m. - 7:12 p.m.IAD-YXU

48h 59m3 stops

C$ 2,138Multiple Airlines

Find Deal

Sat, 18 Oct - Sat, 8 Nov

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 Oct

YXU6:15 a.m.London

7h 23m

1 stop

IAD1:38 p.m.Washington, D.C. Dulles Intl

8 Nov

IAD4:25 p.m.Washington, D.C. Dulles Intl

4h 56m

1 stop

YXU9:21 p.m.London

C$ 659

Find similar

Air Canada

18 Oct

YXU6:15 a.m.London

7h 23m

1 stop

IAD1:38 p.m.Washington, D.C. Dulles Intl

8 Nov

IAD9:45 a.m.Washington, D.C. Dulles Intl

7h 20m

2 stops

YXU5:05 p.m.London

C$ 666

Find similar

Air Canada

20 Sep

YXU3:50 p.m.London

3h 54m

1 stop

DCA7:44 p.m.Washington, D.C. Reagan-National

24 Sep

DCA11:00 a.m.Washington, D.C. Reagan-National

4h 17m

1 stop

YXU3:17 p.m.London

C$ 1,398

Find similar

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 Nov

YXU5:40 p.m.London

4h 55m

1 stop

DCA10:35 p.m.Washington, D.C. Reagan-National

8 Nov

DCA6:30 a.m.Washington, D.C. Reagan-National

10h 35m

2 stops

YXU5:05 p.m.London

C$ 717

Find similar

United Airlines

18 Oct

YXU6:15 a.m.London

11h 22m

2 stops

IAD5:37 p.m.Washington, D.C. Dulles Intl

8 Nov

IAD8:30 a.m.Washington, D.C. Dulles Intl

12h 51m

2 stops

YXU9:21 p.m.London

C$ 721

Find similar

United Airlines

1 Nov

YXU9:25 a.m.London

7h 21m

2 stops

DCA4:46 p.m.Washington, D.C. Reagan-National

8 Nov

DCA7:00 a.m.Washington, D.C. Reagan-National

10h 05m

2 stops

YXU5:05 p.m.London

C$ 724

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

Sat 18/10

6:15 a.m.-1:38 p.m.

1 stop7h 23m

Washington, D.C. Dulles Intl

Sat 8/11

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

1 stop4h 56m

C$ 659

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sat 18/10

6:15 a.m.-1:38 p.m.

1 stop7h 23m

Washington, D.C. Dulles Intl

Sat 8/11

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

2 stops7h 20m

C$ 666

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sat 1/11

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

1 stop4h 55m

Washington, D.C. Reagan-National

Sat 8/11

6:30 a.m.-5:05 p.m.

2 stops10h 35m

C$ 717

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sat 18/10

6:15 a.m.-5:37 p.m.

2 stops11h 22m

Washington, D.C. Dulles Intl

Sat 8/11

8:30 a.m.-9:21 p.m.

2 stops12h 51m

C$ 721

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sat 1/11

9:25 a.m.-4:46 p.m.

2 stops7h 21m

Washington, D.C. Reagan-National

Sat 8/11

7:00 a.m.-5:05 p.m.

2 stops10h 05m

C$ 724

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Sat 1/11

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

1 stop4h 55m

Washington, D.C. Reagan-National

Sat 8/11

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

1 stop7h 25m

C$ 766

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Sat 18/10

6:00 a.m.-7:26 p.m.

2 stops13h 26m

Washington, D.C. Dulles Intl

Sat 8/11

6:13 p.m.-7:12 p.m.

3 stops48h 59m

C$ 2,138

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Fri 31/10

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

1 stop4h 55m

C$ 343

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Fri 31/10

5:40 p.m.-9:20 p.m.

1 stop3h 40m

C$ 385

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Fri 31/10

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

2 stops8h 00m

C$ 392

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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$ 639. 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$ 676 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 4h 55m.
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.

Alexandria

Gettysburg

Linthicum Heights

Bethesda

Silver Spring

Herndon

Reston

Fairfax

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.