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Cheap flights from District of Columbia to London from $187

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 4/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
6:59 am - 11:45 am
DCA
-
YXU
4h 46m
1 stop
Air Canada Logo
3:30 pm - 7:57 pm
YXU
-
DCA
4h 27m
1 stop
$547Air Canada
Tue, Jul 14 - Fri, Jul 17
Air Canada Logo
4:30 pm - 9:18 pm
IAD
-
YXU
4h 48m
1 stop
Air Canada Logo
9:25 am - 3:39 pm
YXU
-
IAD
6h 14m
1 stop
$547Air Canada
Wed, Apr 8 - Wed, Apr 15
Air Canada Logo
12:55 pm - 9:19 pm
DCA
-
YXU
8h 24m
2 stops
Air Canada Logo
5:10 am - 8:53 am
YXU
-
DCA
3h 43m
1 stop
$552Air Canada
Tue, Apr 28 - Wed, Apr 29
Air Canada Logo
4:30 pm - 9:19 pm
IAD
-
YXU
4h 49m
1 stop
Air Canada Logo
9:25 am - 7:40 pm
YXU
-
IAD
10h 15m
2 stops
$556Air Canada
Tue, Apr 28 - Wed, Apr 29
Air Canada Logo
12:55 pm - 9:19 pm
DCA
-
YXU
8h 24m
2 stops
Air Canada Logo
5:10 am - 12:01 pm
YXU
-
DCA
6h 51m
2 stops
$558Air Canada
Tue, Apr 28 - Wed, Apr 29
Air Canada Logo
9:55 am - 5:04 pm
IAD
-
YXU
7h 09m
2 stops
Air Canada Logo
9:25 am - 7:40 pm
YXU
-
IAD
10h 15m
2 stops
$564Air Canada
Tue, Apr 28 - Wed, Apr 29
Air Canada Logo
6:50 pm - 8:44 am
DCA
-
YXU
13h 54m
1 stop
Air Canada Logo
5:40 pm - 10:43 pm
YXU
-
DCA
5h 03m
1 stop
$572Air Canada
Tue, Apr 28 - Wed, Apr 29
Air Canada Logo
4:30 pm - 9:19 pm
IAD
-
YXU
4h 49m
1 stop
Air Canada Logo
9:25 am - 8:29 pm
YXU
-
IAD
11h 04m
1 stop
$572Air Canada
Tue, Apr 28 - Wed, Apr 29
United Airlines Logo
4:30 pm - 9:19 pm
IAD
-
YXU
4h 49m
1 stop
United Airlines Logo
5:40 pm - 9:25 pm
YXU
-
IAD
3h 45m
1 stop
$644United Airlines
Mon, Apr 13 - Mon, Apr 20
United Airlines Logo
6:00 am - 5:03 pm
DCA
-
YXU
11h 03m
2 stops
United Airlines Logo
5:10 am - 8:53 am
YXU
-
DCA
3h 43m
1 stop
$654United Airlines
Wed, Apr 8 - Wed, Apr 15

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
Apr 13
IAD4:30 pmWashington, D.C. Dulles Intl
4h 49m
1 stop
YXU9:19 pmLondon
Apr 20
YXU5:40 pmLondon
3h 45m
1 stop
IAD9:25 pmWashington, D.C. Dulles Intl
$644
United Airlines
Apr 8
DCA6:00 amWashington, D.C. Reagan-National
11h 03m
2 stops
YXU5:03 pmLondon
Apr 15
YXU5:10 amLondon
3h 43m
1 stop
DCA8:53 amWashington, D.C. Reagan-National
$654
United Airlines
Jul 17
DCA6:59 amWashington, D.C. Reagan-National
4h 46m
1 stop
YXU11:45 amLondon
Jul 21
YXU6:00 amLondon
9h 52m
2 stops
DCA3:52 pmWashington, D.C. Reagan-National
$659

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
Apr 8
IAD4:30 pmWashington, D.C. Dulles Intl
4h 48m
1 stop
YXU9:18 pmLondon
Apr 15
YXU9:25 amLondon
6h 14m
1 stop
IAD3:39 pmWashington, D.C. Dulles Intl
$547
Air Canada
Apr 28
DCA12:55 pmWashington, D.C. Reagan-National
8h 24m
2 stops
YXU9:19 pmLondon
Apr 29
YXU5:40 pmLondon
5h 03m
1 stop
DCA10:43 pmWashington, D.C. Reagan-National
$552
Air Canada
Apr 28
IAD4:30 pmWashington, D.C. Dulles Intl
4h 49m
1 stop
YXU9:19 pmLondon
Apr 29
YXU9:25 amLondon
10h 15m
2 stops
IAD7:40 pmWashington, D.C. Dulles Intl
$556

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 February 27, 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

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Tue 7/14

6:59 am-11:45 am

1 stop4h 46m

London

Fri 7/17

3:30 pm-7:57 pm

1 stop4h 27m

$547

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 4/8

4:30 pm-9:18 pm

1 stop4h 48m

London

Wed 4/15

9:25 am-3:39 pm

1 stop6h 14m

$547

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Tue 4/28

12:55 pm-9:19 pm

2 stops8h 24m

London

Wed 4/29

5:10 am-8:53 am

1 stop3h 43m

$552

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 4/28

4:30 pm-9:19 pm

1 stop4h 49m

London

Wed 4/29

9:25 am-7:40 pm

2 stops10h 15m

$556

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Tue 4/28

12:55 pm-9:19 pm

2 stops8h 24m

London

Wed 4/29

5:10 am-12:01 pm

2 stops6h 51m

$558

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 4/28

9:55 am-5:04 pm

2 stops7h 09m

London

Wed 4/29

9:25 am-7:40 pm

2 stops10h 15m

$564

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Tue 4/28

6:50 pm-8:44 am

1 stop13h 54m

London

Wed 4/29

5:40 pm-10:43 pm

1 stop5h 03m

$572

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 4/28

4:30 pm-9:19 pm

1 stop4h 49m

London

Wed 4/29

9:25 am-8:29 pm

1 stop11h 04m

$572

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Mon 4/13

4:30 pm-9:19 pm

1 stop4h 49m

London

Mon 4/20

5:40 pm-9:25 pm

1 stop3h 45m

$644

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Wed 4/8

6:00 am-5:03 pm

2 stops11h 03m

London

Wed 4/15

5:10 am-8:53 am

1 stop3h 43m

$654

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?

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 60% 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

4h 46m

Direct flights

None
The fastest flight from District of Columbia to London, Ontario takes 4h 46m
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.
Search flight deals

  • 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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