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Cheap flights from District of Columbia to London from $345

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to London departing on 8/28. 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
1 adult, Economy, 0 bags

Find the cheapest flights from District of Columbia to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
9:40 am - 2:42 pm
DCA
-
YXU
5h 02m
1 stop
Air Canada Logo
3:20 pm - 7:58 pm
YXU
-
DCA
4h 38m
1 stop
$724Air Canada
Sat, Dec 5 - Wed, Dec 9
Air Canada Logo
9:55 am - 2:55 pm
IAD
-
YXU
5h 00m
1 stop
Air Canada Logo
10:05 am - 3:25 pm
YXU
-
IAD
5h 20m
1 stop
$724Air Canada
Fri, Oct 16 - Tue, Oct 20
Air Canada Logo
9:40 am - 2:42 pm
DCA
-
YXU
5h 02m
1 stop
Air Canada Logo
5:30 am - 12:19 pm
YXU
-
DCA
6h 49m
2 stops
$729Air Canada
Sat, Dec 5 - Wed, Dec 9
Air Canada Logo
4:00 pm - 9:40 pm
IAD
-
YXU
5h 40m
1 stop
Air Canada Logo
10:05 am - 7:00 pm
YXU
-
IAD
8h 55m
2 stops
$732Air Canada
Fri, Oct 16 - Tue, Oct 20
Air Canada Logo
12:55 pm - 9:47 pm
DCA
-
YXU
8h 52m
2 stops
Air Canada Logo
5:30 am - 12:19 pm
YXU
-
DCA
6h 49m
2 stops
$734Air Canada
Sat, Dec 5 - Wed, Dec 9
Air Canada Logo
9:45 am - 5:45 pm
IAD
-
YXU
8h 00m
2 stops
Air Canada Logo
5:40 am - 3:00 pm
YXU
-
IAD
9h 20m
2 stops
$741Air Canada
Fri, Oct 16 - Tue, Oct 20
Multiple Airlines Logo
8:59 am - 5:20 am
IAD
-
YXU
20h 21m
2 stops
Multiple Airlines Logo
5:55 pm - 6:10 pm
YXU
-
IAD
24h 15m
1 stop
$771Multiple Airlines
Sun, Aug 30 - Sun, Sep 6
United Airlines Logo
6:00 am - 2:50 pm
DCA
-
YXU
8h 50m
2 stops
United Airlines Logo
3:30 pm - 7:57 pm
YXU
-
DCA
4h 27m
1 stop
$841United Airlines
Thu, Aug 27 - Thu, Sep 3
United Airlines Logo
6:15 am - 2:50 pm
IAD
-
YXU
8h 35m
2 stops
United Airlines Logo
10:05 am - 4:07 pm
YXU
-
IAD
6h 02m
1 stop
$841United Airlines
Thu, Aug 27 - Thu, Sep 3
United Airlines Logo
6:00 am - 2:50 pm
DCA
-
YXU
8h 50m
2 stops
United Airlines Logo
5:40 am - 2:23 pm
YXU
-
DCA
8h 43m
2 stops
$856United Airlines
Thu, Aug 27 - Thu, Sep 3

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United Airlines flights from District of Columbia to London, Ontario

Our best United Airlines deals on District of Columbia to London, Ontario flight tickets
United Airlines
Aug 27
DCA6:00 amWashington, D.C. Reagan-National
8h 50m
2 stops
YXU2:50 pmLondon
Sep 3
YXU3:30 pmLondon
4h 27m
1 stop
DCA7:57 pmWashington, D.C. Reagan-National
$841
United Airlines
Aug 27
DCA6:00 amWashington, D.C. Reagan-National
8h 50m
2 stops
YXU2:50 pmLondon
Sep 3
YXU5:40 amLondon
8h 43m
2 stops
DCA2:23 pmWashington, D.C. Reagan-National
$856
United Airlines
Oct 30
IAD6:05 amWashington, D.C. Dulles Intl
8h 42m
2 stops
YXU2:47 pmLondon
Nov 2
YXU9:15 amLondon
8h 17m
2 stops
IAD5:32 pmWashington, D.C. Dulles Intl
$964

Air Canada flights from District of Columbia to London, Ontario

Our best Air Canada deals on District of Columbia to London, Ontario flight tickets
Air Canada
Dec 5
DCA9:40 amWashington, D.C. Reagan-National
5h 02m
1 stop
YXU2:42 pmLondon
Dec 9
YXU3:20 pmLondon
4h 38m
1 stop
DCA7:58 pmWashington, D.C. Reagan-National
$724
Air Canada
Dec 5
DCA9:40 amWashington, D.C. Reagan-National
5h 02m
1 stop
YXU2:42 pmLondon
Dec 9
YXU5:30 amLondon
6h 49m
2 stops
DCA12:19 pmWashington, D.C. Reagan-National
$729
Air Canada
Oct 16
IAD4:00 pmWashington, D.C. Dulles Intl
5h 40m
1 stop
YXU9:40 pmLondon
Oct 20
YXU10:05 amLondon
8h 55m
2 stops
IAD7:00 pmWashington, D.C. Dulles Intl
$732

momondo Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 832,500 searches. Data last updated July 18, 2026.
Use the filters below to find and compare flights from District of Columbia to London, Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sat 12/5

9:40 am-2:42 pm

1 stop5h 02m

London

Wed 12/9

3:20 pm-7:58 pm

1 stop4h 38m

$724

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Fri 10/16

9:55 am-2:55 pm

1 stop5h 00m

London

Tue 10/20

10:05 am-3:25 pm

1 stop5h 20m

$724

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sat 12/5

9:40 am-2:42 pm

1 stop5h 02m

London

Wed 12/9

5:30 am-12:19 pm

2 stops6h 49m

$729

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Fri 10/16

4:00 pm-9:40 pm

1 stop5h 40m

London

Tue 10/20

10:05 am-7:00 pm

2 stops8h 55m

$732

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sat 12/5

12:55 pm-9:47 pm

2 stops8h 52m

London

Wed 12/9

5:30 am-12:19 pm

2 stops6h 49m

$734

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Fri 10/16

9:45 am-5:45 pm

2 stops8h 00m

London

Tue 10/20

5:40 am-3:00 pm

2 stops9h 20m

$741

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 8/30

8:59 am-5:20 am

2 stops20h 21m

London

Sun 9/6

5:55 pm-6:10 pm

1 stop24h 15m

$771

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Thu 8/27

6:00 am-2:50 pm

2 stops8h 50m

London

Thu 9/3

3:30 pm-7:57 pm

1 stop4h 27m

$841

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Thu 8/27

6:15 am-2:50 pm

2 stops8h 35m

London

Thu 9/3

10:05 am-4:07 pm

1 stop6h 02m

$841

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Thu 8/27

6:00 am-2:50 pm

2 stops8h 50m

London

Thu 9/3

5:40 am-2:23 pm

2 stops8h 43m

$856

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from District of Columbia 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 District of Columbia to London?

WestJet, Air Canada, and United Airlines are the most popular carriers operating from District of Columbia to London

What airlines fly to London, Ontario?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to London, Ontario from District of Columbia according to our data. Air Canada is the first choice among our users, with 61% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 6 different airlines that fly to London, Ontario on a routine basis, so you have a few additional options to choose from.

Cheap District of Columbia to London, Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to London, Ontario

Fastest flight time

3h 50m

Direct flights

None
The fastest flight from District of Columbia to London, Ontario takes 3h 50m
There are no direct flights from District of Columbia to London, Ontario. There are no popular flight routes from District of Columbia to London, Ontario.
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Frequently asked questions about flying from District of Columbia to London, Ontario

  • When did momondo last update prices for flights from District of Columbia to London Airport?

    Prices for flights from District of Columbia to London Airport are refreshed on a daily basis.

  • How old do you have to be to fly from District of Columbia to London 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 District of Columbia to London Airport.

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

    The required travel and health documents for your London Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling 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 District of Columbia to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from District of Columbia to London for you.

Can I find flights from District of Columbia to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for District of Columbia to London flights to just show those with flexible booking policies.

How can momondo help me find flights from District of Columbia to London?

Once all potential District of Columbia 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 District of Columbia to London right now. Can momondo alert me if prices change?

Yes. momondo can track prices for District of Columbia to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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