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Cheap flights from District of Columbia to London from $412

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 5/9. 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 - 11:43 am
DCA
-
YXU
4h 44m
1 stop
Air Canada Logo
6:10 pm - 10:28 pm
YXU
-
DCA
4h 18m
1 stop
$644Air Canada
Fri, May 1 - Sat, May 9
Multiple Airlines Logo
12:40 pm - 5:20 am
IAD
-
YXU
40h 40m
2 stops
Multiple Airlines Logo
6:10 am - 6:10 pm
YXU
-
IAD
12h 00m
1 stop
$645Multiple Airlines
Sat, Jul 4 - Fri, Jul 10
Air Canada Logo
12:45 pm - 9:38 pm
DCA
-
YXU
8h 53m
2 stops
Air Canada Logo
5:10 am - 8:53 am
YXU
-
DCA
3h 43m
1 stop
$649Air Canada
Fri, May 1 - Sat, May 9
Air Canada Logo
12:45 pm - 9:38 pm
DCA
-
YXU
8h 53m
2 stops
Air Canada Logo
5:10 am - 12:01 pm
YXU
-
DCA
6h 51m
2 stops
$654Air Canada
Fri, May 1 - Sat, May 9
Air Canada Logo
11:00 am - 2:55 pm
DCA
-
YXU
3h 55m
1 stop
Air Canada Logo
6:20 pm - 10:31 pm
YXU
-
DCA
4h 11m
1 stop
$703Air Canada
Sat, Jul 4 - Fri, Jul 10
Air Canada Logo
9:55 am - 2:55 pm
IAD
-
YXU
5h 00m
1 stop
Air Canada Logo
9:30 am - 3:24 pm
YXU
-
IAD
5h 54m
1 stop
$703Air Canada
Mon, Jul 13 - Fri, Jul 17
Air Canada Logo
6:59 am - 11:43 am
DCA
-
YXU
4h 44m
1 stop
Air Canada Logo
5:10 am - 8:53 am
YXU
-
DCA
3h 43m
1 stop
$704Air Canada
Sun, May 31 - Sun, Jun 7
United Airlines Logo
11:00 am - 2:58 pm
DCA
-
YXU
3h 58m
1 stop
United Airlines Logo
5:10 am - 8:53 am
YXU
-
DCA
3h 43m
1 stop
$800United Airlines
Fri, Jun 12 - Wed, Jun 17
United Airlines Logo
9:30 am - 9:40 pm
DCA
-
YXU
12h 10m
2 stops
United Airlines Logo
5:10 am - 8:52 am
YXU
-
DCA
3h 42m
1 stop
$810United Airlines
Sat, Jul 4 - Fri, Jul 10
United Airlines Logo
8:15 am - 9:40 pm
IAD
-
YXU
13h 25m
2 stops
United Airlines Logo
3:30 pm - 9:26 pm
YXU
-
IAD
5h 56m
1 stop
$810United Airlines
Fri, Jul 31 - Sun, Aug 2

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
May 1
DCA6:59 amWashington, D.C. Reagan-National
4h 44m
1 stop
YXU11:43 amLondon
May 9
YXU6:10 pmLondon
4h 18m
1 stop
DCA10:28 pmWashington, D.C. Reagan-National
$644
Air Canada
May 1
DCA12:45 pmWashington, D.C. Reagan-National
8h 53m
2 stops
YXU9:38 pmLondon
May 9
YXU5:10 amLondon
3h 43m
1 stop
DCA8:53 amWashington, D.C. Reagan-National
$649
Air Canada
May 1
DCA12:45 pmWashington, D.C. Reagan-National
8h 53m
2 stops
YXU9:38 pmLondon
May 9
YXU5:10 amLondon
6h 51m
2 stops
DCA12:01 pmWashington, D.C. Reagan-National
$654

WestJet flights from District of Columbia to London, Ontario

Our best WestJet deals on District of Columbia to London, Ontario flight tickets
WestJet
Jul 31
DCA6:00 amWashington, D.C. Reagan-National
23h 20m
2 stops
YXU5:20 amLondon
Aug 2
YXU2:40 pmLondon
9h 16m
2 stops
DCA11:56 pmWashington, D.C. Reagan-National
$1,108
WestJet
May 29
IAD7:00 pmWashington, D.C. Dulles Intl
21h 45m
1 stop
YXU4:45 pmLondon
May 31
YXU5:55 pmLondon
24h 15m
1 stop
IAD6:10 pmWashington, D.C. Dulles Intl
$1,291
WestJet
Jul 31
IAD3:02 pmWashington, D.C. Dulles Intl
14h 18m
2 stops
YXU5:20 amLondon
Aug 2
YXU5:55 pmLondon
29h 26m
2 stops
IAD11:21 pmWashington, D.C. Dulles Intl
$1,560

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 April 17, 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

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Fri 5/1

6:59 am-11:43 am

1 stop4h 44m

London

Sat 5/9

6:10 pm-10:28 pm

1 stop4h 18m

$644

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sat 7/4

12:40 pm-5:20 am

2 stops40h 40m

London

Fri 7/10

6:10 am-6:10 pm

1 stop12h 00m

$645

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Fri 5/1

12:45 pm-9:38 pm

2 stops8h 53m

London

Sat 5/9

5:10 am-8:53 am

1 stop3h 43m

$649

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Fri 5/1

12:45 pm-9:38 pm

2 stops8h 53m

London

Sat 5/9

5:10 am-12:01 pm

2 stops6h 51m

$654

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sat 7/4

11:00 am-2:55 pm

1 stop3h 55m

London

Fri 7/10

6:20 pm-10:31 pm

1 stop4h 11m

$703

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Mon 7/13

9:55 am-2:55 pm

1 stop5h 00m

London

Fri 7/17

9:30 am-3:24 pm

1 stop5h 54m

$703

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sun 5/31

6:59 am-11:43 am

1 stop4h 44m

London

Sun 6/7

5:10 am-8:53 am

1 stop3h 43m

$704
Quickest round-trip

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Fri 6/12

11:00 am-2:58 pm

1 stop3h 58m

London

Wed 6/17

5:10 am-8:53 am

1 stop3h 43m

$800

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sat 7/4

9:30 am-9:40 pm

2 stops12h 10m

London

Fri 7/10

5:10 am-8:52 am

1 stop3h 42m

$810

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Fri 7/31

8:15 am-9:40 pm

2 stops13h 25m

London

Sun 8/2

3:30 pm-9:26 pm

1 stop5h 56m

$810

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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?

United Airlines is the most popular carrier 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 59% 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 58m

Direct flights

None
The fastest flight from District of Columbia to London, Ontario takes 3h 58m
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

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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