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Cheap flights from District of Columbia to London from $593

This is the cheapest round-trip 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 1/14. 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
4:30 pm - 9:21 pmIAD-YXU
4h 51m1 stop
Air Canada Logo
9:25 am - 3:46 pmYXU-IAD
6h 21m1 stop
$593Air Canada
Find Deal
Wed, Jan 14 - Fri, Jan 16
Air Canada Logo
4:30 pm - 9:18 pmIAD-YXU
4h 48m1 stop
Air Canada Logo
9:25 am - 3:39 pmYXU-IAD
6h 14m1 stop
$594Air Canada
Find Deal
Tue, Apr 7 - Tue, Apr 14
Air Canada Logo
8:40 pm - 8:46 amDCA-YXU
12h 06m1 stop
Air Canada Logo
5:10 am - 8:55 amYXU-DCA
3h 45m1 stop
$617Air Canada
Find Deal
Sun, Dec 21 - Sun, Dec 28
Air Canada Logo
9:00 am - 5:05 pmIAD-YXU
8h 05m1 stop
Air Canada Logo
5:10 am - 3:46 pmYXU-IAD
10h 36m1 stop
$640Air Canada
Find Deal
Sun, Dec 21 - Sun, Dec 28
Multiple Airlines Logo
12:35 pm - 5:05 pmIAD-YXU
4h 30m1 stop
Multiple Airlines Logo
9:25 am - 4:13 pmYXU-IAD
6h 48m2 stops
$685Multiple Airlines
Find Deal
Wed, Jan 14 - Fri, Jan 16
United Airlines Logo
6:00 am - 5:05 pmDCA-YXU
11h 05m2 stops
United Airlines Logo
5:10 am - 8:55 amYXU-DCA
3h 45m1 stop
$689United Airlines
Find Deal
Wed, Jan 14 - Fri, Jan 16
Multiple Airlines Logo
7:00 am - 5:05 pmDCA-YXU
10h 05m2 stops
Multiple Airlines Logo
5:10 am - 3:28 pmYXU-DCA
10h 18m2 stops
$694Multiple Airlines
Find Deal
Wed, Jan 14 - Fri, Jan 16
United Airlines Logo
6:00 am - 5:05 pmIAD-YXU
11h 05m2 stops
United Airlines Logo
5:10 am - 3:46 pmYXU-IAD
10h 36m1 stop
$736United Airlines
Find Deal
Sun, Dec 21 - Sun, Dec 28
WestJet Logo
12:37 pm - 6:34 amDCA-YXU
17h 57m2 stops
WestJet Logo
8:10 pm - 11:37 amYXU-DCA
15h 27m2 stops
$1,664WestJet
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Mon, Dec 22 - Mon, Dec 29
WestJet Logo
12:58 pm - 6:34 amIAD-YXU
17h 36m2 stops
WestJet Logo
8:10 pm - 12:13 pmYXU-IAD
16h 03m2 stops
$1,664WestJet
Find Deal
Mon, Dec 22 - Mon, Dec 29

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
Jan 14
IAD4:30 pmWashington, D.C. Dulles Intl
4h 51m
1 stop
YXU9:21 pmLondon
Jan 16
YXU9:25 amLondon
6h 21m
1 stop
IAD3:46 pmWashington, D.C. Dulles Intl
$593
Find similar
Air Canada
Apr 7
IAD4:30 pmWashington, D.C. Dulles Intl
4h 48m
1 stop
YXU9:18 pmLondon
Apr 14
YXU9:25 amLondon
6h 14m
1 stop
IAD3:39 pmWashington, D.C. Dulles Intl
$594
Find similar
Air Canada
Dec 21
DCA8:40 pmWashington, D.C. Reagan-National
12h 06m
1 stop
YXU8:46 amLondon
Dec 28
YXU5:10 amLondon
3h 45m
1 stop
DCA8:55 amWashington, D.C. Reagan-National
$617
Find similar

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
Jan 14
DCA6:00 amWashington, D.C. Reagan-National
11h 05m
2 stops
YXU5:05 pmLondon
Jan 16
YXU5:10 amLondon
3h 45m
1 stop
DCA8:55 amWashington, D.C. Reagan-National
$689
Find similar
United Airlines
Dec 21
IAD6:00 amWashington, D.C. Dulles Intl
11h 05m
2 stops
YXU5:05 pmLondon
Dec 28
YXU5:10 amLondon
10h 36m
1 stop
IAD3:46 pmWashington, D.C. Dulles Intl
$736
Find similar
United Airlines
Dec 22
DCA6:50 pmWashington, D.C. Reagan-National
13h 56m
1 stop
YXU8:46 amLondon
Dec 29
YXU5:10 amLondon
15h 49m
2 stops
DCA8:59 pmWashington, D.C. Reagan-National
$857
Find similar

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 November 6, 2025.
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

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 1/14

4:30 pm-9:21 pm

1 stop4h 51m

London

Fri 1/16

9:25 am-3:46 pm

1 stop6h 21m

$593

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 4/7

4:30 pm-9:18 pm

1 stop4h 48m

London

Tue 4/14

9:25 am-3:39 pm

1 stop6h 14m

$594

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sun 12/21

8:40 pm-8:46 am

1 stop12h 06m

London

Sun 12/28

5:10 am-8:55 am

1 stop3h 45m

$617

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 12/21

9:00 am-5:05 pm

1 stop8h 05m

London

Sun 12/28

5:10 am-3:46 pm

1 stop10h 36m

$640

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 1/14

12:35 pm-5:05 pm

1 stop4h 30m

London

Fri 1/16

9:25 am-4:13 pm

2 stops6h 48m

$685

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Wed 1/14

6:00 am-5:05 pm

2 stops11h 05m

London

Fri 1/16

5:10 am-8:55 am

1 stop3h 45m

$689

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Wed 1/14

7:00 am-5:05 pm

2 stops10h 05m

London

Fri 1/16

5:10 am-3:28 pm

2 stops10h 18m

$694

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 12/21

6:00 am-5:05 pm

2 stops11h 05m

London

Sun 12/28

5:10 am-3:46 pm

1 stop10h 36m

$736

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Mon 12/22

12:37 pm-6:34 am

2 stops17h 57m

London

Mon 12/29

8:10 pm-11:37 am

2 stops15h 27m

$1,664

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Mon 12/22

12:58 pm-6:34 am

2 stops17h 36m

London

Mon 12/29

8:10 pm-12:13 pm

2 stops16h 03m

$1,664

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 day to depart on your flight to London, Ontario?

According to our data, Friday is the cheapest day to fly to London, Ontario from District of Columbia. The lowest ticket price found for a Friday departure recently was $534. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London, Ontario on Saturday is $556.

What is the cheapest time of day to depart on your flight to London, Ontario?

In the afternoon is the cheapest time of day to fly from District of Columbia to London, Ontario when you can find flight prices for as low as $534. Flying to London, Ontario in the afternoon is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to London, Ontario, so prices are often more expensive at around $685 per ticket.

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

Direct flights

None
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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  • 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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