Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from London, Ontario to Washington, D.C. from $400

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 9/24. 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
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? 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 London, Ontario to Washington, D.C.

Cheap round-trip flights

Multiple Airlines Logo
YXU-DCA
359 mimulti-stop
Multiple Airlines Logo
DCA-YXU
359 mimulti-stop
Multiple Airlines
Find Deal

Air Canada flights from London, Ontario to Washington, D.C. Reagan-National Airport

Our best Air Canada deals on London, Ontario to Washington, D.C. Reagan-National Airport flight tickets
Air Canada
Sep 20
YXU3:50 pmLondon
3h 54m
1 stop
DCA7:44 pmWashington, D.C. Reagan-National
Sep 24
DCA11:00 amWashington, D.C. Reagan-National
4h 17m
1 stop
YXU3:17 pmLondon
$1,016
Find similar
Air Canada
Sep 19
YXU3:50 pmLondon
3h 54m
1 stop
DCA7:44 pmWashington, D.C. Reagan-National
Sep 26
DCA6:59 amWashington, D.C. Reagan-National
8h 18m
1 stop
YXU3:17 pmLondon
$1,429
Find similar

United Airlines flights from London, Ontario to Washington, D.C. Reagan-National Airport

Our best United Airlines deals on London, Ontario to Washington, D.C. Reagan-National Airport flight tickets
United Airlines
Sep 19
YXU3:50 pmLondon
3h 54m
1 stop
DCA7:44 pmWashington, D.C. Reagan-National
Sep 24
DCA6:00 amWashington, D.C. Reagan-National
9h 17m
2 stops
YXU3:17 pmLondon
$912
Find similar
United Airlines
Sep 19
YXU6:10 amLondon
8h 06m
2 stops
DCA2:16 pmWashington, D.C. Reagan-National
Sep 24
DCA6:00 amWashington, D.C. Reagan-National
9h 17m
2 stops
YXU3:17 pmLondon
$918
Find similar
United Airlines
Sep 19
YXU3:50 pmLondon
3h 54m
1 stop
DCA7:44 pmWashington, D.C. Reagan-National
Sep 26
DCA6:00 amWashington, D.C. Reagan-National
15h 29m
2 stops
YXU9:29 pmLondon
$948
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London, Ontario to Washington, D.C. Reagan-National 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 September 16, 2025.
Use the filters below to find and compare flights from London, Ontario to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Wed 9/24

3:50 pm-7:44 pm

1 stop3h 54m

$400

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Wed 9/24

6:10 am-12:59 pm

2 stops6h 49m

$405

LondonWashington, D.C.

YXU - DCA

YXUDCA

London

Wed 9/24

8:00 pm-7:30 pm

3 stops47h 30m

$469

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from London, Ontario to Washington, D.C. Reagan-National 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. Reagan-National?

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

What airlines fly to Washington, D.C. Reagan-National Airport?

Air Canada, American Airlines and United Airlines are the top three most popular airlines that fly to Washington, D.C. Reagan-National Airport from London, Ontario according to our data. Air Canada is the first choice among our users, with 74% of people opting to fly with this airline when traveling to Washington, D.C. Reagan-National Airport. Keep in mind that there are 3 different airlines that fly to Washington, D.C. Reagan-National Airport on a routine basis, so you have a few additional options to choose from.

When to book flights from London, Ontario to Washington, D.C. Reagan-National Airport

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

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

Direct flights

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

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

    London and Washington, D.C. Reagan-National are 359.4 mi apart from one another.

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

    Prices for flights from London Airport to Washington, D.C. Reagan-National Airport were last updated today.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Airport to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The necessary travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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
National Harbor
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Manassas
Reston
Fairfax
Glen Burnie
Gaithersburg
Springfield
Linthicum Heights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Washington, D.C.. momondo saves you time and could save you money on your trip.

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.?

Once all potential London to Washington, D.C. 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 London to Washington, D.C. right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from London and alert you when they change.

An easier way to manage your Washington, D.C. Reagan-National Airport 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
Thu 10/16
Thu 10/23
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.