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.

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 71% of people opting to fly with this airline when travelling 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 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$ 377 Cheap Flights from London to Washington, D.C. in 2026

1 adult

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:10 a.m. - 12:01 p.m.

YXU

DCA

6h 51m

2 stops

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

DCA

YXU

8h 23m

2 stops

C$ 699Air Canada

Mon, 30 Mar - Tue, 31 Mar

9:25 a.m. - 3:34 p.m.

YXU

IAD

6h 09m

1 stop

4:30 p.m. - 9:18 p.m.

IAD

YXU

4h 48m

1 stop

C$ 699Air Canada

Mon, 30 Mar - Tue, 31 Mar

5:10 a.m. - 12:01 p.m.

YXU

DCA

6h 51m

2 stops

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

DCA

YXU

8h 23m

2 stops

C$ 702Air Canada

Mon, 30 Mar - Tue, 31 Mar

9:25 a.m. - 3:34 p.m.

YXU

IAD

6h 09m

1 stop

4:30 p.m. - 9:18 p.m.

IAD

YXU

4h 48m

1 stop

C$ 702Air Canada

Mon, 30 Mar - Tue, 31 Mar

9:25 a.m. - 7:40 p.m.

YXU

IAD

10h 15m

2 stops

4:30 p.m. - 9:18 p.m.

IAD

YXU

4h 48m

1 stop

C$ 703Air Canada

Mon, 30 Mar - Tue, 31 Mar

9:25 a.m. - 7:40 p.m.

YXU

IAD

10h 15m

2 stops

4:30 p.m. - 9:18 p.m.

IAD

YXU

4h 48m

1 stop

C$ 706Air Canada

Mon, 30 Mar - Tue, 31 Mar

9:25 a.m. - 9:17 p.m.

YXU

BWI

11h 52m

2 stops

10:30 a.m. - 9:21 p.m.

BWI

YXU

10h 51m

2 stops

C$ 860United Airlines

Mon, 2 Mar - Wed, 4 Mar

9:25 a.m. - 9:17 p.m.

YXU

BWI

11h 52m

2 stops

10:30 a.m. - 9:21 p.m.

BWI

YXU

10h 51m

2 stops

C$ 863United Airlines

Mon, 2 Mar - Wed, 4 Mar

5:10 a.m. - 9:42 p.m.

YXU

BWI

16h 32m

2 stops

8:09 a.m. - 5:05 p.m.

BWI

YXU

8h 56m

2 stops

C$ 901United Airlines

Tue, 10 Mar - Tue, 17 Mar

7:30 a.m. - 7:14 p.m.

YXU

DCA

35h 44m

3 stops

2:59 p.m. - 6:35 a.m.

DCA

YXU

15h 36m

2 stops

C$ 1,702Multiple Airlines

Fri, 6 Feb - Thu, 12 Feb

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

30 Mar

YXU9:25 a.m.London

6h 09m

1 stop

IAD3:34 p.m.Washington, D.C. Dulles Intl

31 Mar

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

4h 48m

1 stop

YXU9:18 p.m.London

C$ 699

Air Canada

30 Mar

YXU9:25 a.m.London

6h 09m

1 stop

IAD3:34 p.m.Washington, D.C. Dulles Intl

31 Mar

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

4h 48m

1 stop

YXU9:18 p.m.London

C$ 702

Air Canada

30 Mar

YXU9:25 a.m.London

10h 15m

2 stops

IAD7:40 p.m.Washington, D.C. Dulles Intl

31 Mar

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

4h 48m

1 stop

YXU9:18 p.m.London

C$ 703

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

2 Mar

YXU9:25 a.m.London

11h 52m

2 stops

BWI9:17 p.m.Baltimore/Washington

4 Mar

BWI10:30 a.m.Baltimore/Washington

10h 51m

2 stops

YXU9:21 p.m.London

C$ 860

United Airlines

2 Mar

YXU9:25 a.m.London

11h 52m

2 stops

BWI9:17 p.m.Baltimore/Washington

4 Mar

BWI10:30 a.m.Baltimore/Washington

10h 51m

2 stops

YXU9:21 p.m.London

C$ 863

United Airlines

10 Mar

YXU5:10 a.m.London

16h 32m

2 stops

BWI9:42 p.m.Baltimore/Washington

17 Mar

BWI8:09 a.m.Baltimore/Washington

8h 56m

2 stops

YXU5:05 p.m.London

C$ 901

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 - DCA

YXUDCA

London

Mon 30/3

5:10 a.m.-12:01 p.m.

2 stops6h 51m

Washington, D.C. Reagan-National

Tue 31/3

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

2 stops8h 23m

C$ 699

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 30/3

9:25 a.m.-3:34 p.m.

1 stop6h 09m

Washington, D.C. Dulles Intl

Tue 31/3

4:30 p.m.-9:18 p.m.

1 stop4h 48m

C$ 699

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Mon 30/3

5:10 a.m.-12:01 p.m.

2 stops6h 51m

Washington, D.C. Reagan-National

Tue 31/3

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

2 stops8h 23m

C$ 702

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 30/3

9:25 a.m.-3:34 p.m.

1 stop6h 09m

Washington, D.C. Dulles Intl

Tue 31/3

4:30 p.m.-9:18 p.m.

1 stop4h 48m

C$ 702

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 30/3

9:25 a.m.-7:40 p.m.

2 stops10h 15m

Washington, D.C. Dulles Intl

Tue 31/3

4:30 p.m.-9:18 p.m.

1 stop4h 48m

C$ 703

LondonWashington, D.C.

YXU - IAD

YXUIAD

London

Mon 30/3

9:25 a.m.-7:40 p.m.

2 stops10h 15m

Washington, D.C. Dulles Intl

Tue 31/3

4:30 p.m.-9:18 p.m.

1 stop4h 48m

C$ 706

LondonBaltimore

YXU - BWI

YXUBWI

London

Mon 2/3

9:25 a.m.-9:17 p.m.

2 stops11h 52m

Baltimore/Washington

Wed 4/3

10:30 a.m.-9:21 p.m.

2 stops10h 51m

C$ 860

LondonBaltimore

YXU - BWI

YXUBWI

London

Mon 2/3

9:25 a.m.-9:17 p.m.

2 stops11h 52m

Baltimore/Washington

Wed 4/3

10:30 a.m.-9:21 p.m.

2 stops10h 51m

C$ 863

LondonBaltimore

YXU - BWI

YXUBWI

London

Tue 10/3

5:10 a.m.-9:42 p.m.

2 stops16h 32m

Baltimore/Washington

Tue 17/3

8:09 a.m.-5:05 p.m.

2 stops8h 56m

C$ 901

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Fri 6/2

7:30 a.m.-7:14 p.m.

3 stops35h 44m

Washington, D.C. Reagan-National

Thu 12/2

2:59 p.m.-6:35 a.m.

2 stops15h 36m

C$ 1,702

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

Can stopping save me money on London, Ontario to Washington, D.C. flights?

You could potentially save up to 57% on your flight if you consider stops on a London, Ontario to Washington, D.C. flight.

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	3h 45m
Direct flights	None

The fastest flight from London, Ontario to Washington, D.C. takes 3h 45m

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

Gaithersburg

Fairfax

Linthicum Heights

Bethesda

Silver Spring

National Harbor

Reston

Laurel

Herndon

Arlington

Fredericksburg

Manassas

Woodbridge

Rockville

McLean

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.