Latest deals
Insights
FAQs
Price Alerts

Cheap flights from District of Columbia to London from $605

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 5/3. 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 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 44m1 stop
Air Canada Logo
12:20 pm - 6:13 pm
YXU
-
DCA
5h 53m1 stop
$605Air Canada
Sun, May 3 - Wed, May 6
Air Canada Logo
4:30 pm - 9:18 pm
IAD
-
YXU
4h 48m1 stop
Air Canada Logo
9:25 am - 3:39 pm
YXU
-
IAD
6h 14m1 stop
$605Air Canada
Tue, Apr 21 - Fri, Apr 24
Air Canada Logo
12:45 pm - 9:38 pm
DCA
-
YXU
8h 53m2 stops
Air Canada Logo
6:10 pm - 10:28 pm
YXU
-
DCA
4h 18m1 stop
$610Air Canada
Sun, May 3 - Wed, May 6
Air Canada Logo
4:30 pm - 9:18 pm
IAD
-
YXU
4h 48m1 stop
Air Canada Logo
9:25 am - 7:40 pm
YXU
-
IAD
10h 15m2 stops
$614Air Canada
Tue, Apr 21 - Fri, Apr 24
Air Canada Logo
12:45 pm - 9:38 pm
DCA
-
YXU
8h 53m2 stops
Air Canada Logo
6:00 am - 12:01 pm
YXU
-
DCA
6h 01m2 stops
$615Air Canada
Sun, May 3 - Wed, May 6
Air Canada Logo
9:55 am - 5:03 pm
IAD
-
YXU
7h 08m2 stops
Air Canada Logo
9:25 am - 7:40 pm
YXU
-
IAD
10h 15m2 stops
$622Air Canada
Tue, Apr 21 - Fri, Apr 24
United Airlines Logo
1:18 pm - 9:20 pm
DCA
-
YXU
8h 02m2 stops
United Airlines Logo
5:10 am - 8:55 am
YXU
-
DCA
3h 45m1 stop
$701United Airlines
Wed, Feb 4 - Wed, Feb 11
United Airlines Logo
12:40 pm - 9:20 pm
IAD
-
YXU
8h 40m2 stops
United Airlines Logo
9:25 am - 3:49 pm
YXU
-
IAD
6h 24m1 stop
$701United Airlines
Wed, Feb 4 - Wed, Feb 11
United Airlines Logo
12:59 pm - 9:20 pm
DCA
-
YXU
8h 21m2 stops
United Airlines Logo
9:25 am - 5:31 pm
YXU
-
DCA
8h 06m2 stops
$716United Airlines
Wed, Feb 4 - Wed, Feb 11
Multiple Airlines Logo
11:40 am - 6:35 am
IAD
-
YXU
18h 55m3 stops
Multiple Airlines Logo
8:10 pm - 5:14 pm
YXU
-
IAD
21h 04m3 stops
$886Multiple Airlines
Wed, Feb 4 - Wed, Feb 11

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 3
DCA6:59 amWashington, D.C. Reagan-National
4h 44m
1 stop
YXU11:43 amLondon
May 6
YXU12:20 pmLondon
5h 53m
1 stop
DCA6:13 pmWashington, D.C. Reagan-National
$605
Find similar
Air Canada
May 3
DCA12:45 pmWashington, D.C. Reagan-National
8h 53m
2 stops
YXU9:38 pmLondon
May 6
YXU6:10 pmLondon
4h 18m
1 stop
DCA10:28 pmWashington, D.C. Reagan-National
$610
Find similar
Air Canada
Apr 21
IAD4:30 pmWashington, D.C. Dulles Intl
4h 48m
1 stop
YXU9:18 pmLondon
Apr 24
YXU9:25 amLondon
10h 15m
2 stops
IAD7:40 pmWashington, D.C. Dulles Intl
$614
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
Feb 4
DCA1:18 pmWashington, D.C. Reagan-National
8h 02m
2 stops
YXU9:20 pmLondon
Feb 11
YXU5:10 amLondon
3h 45m
1 stop
DCA8:55 amWashington, D.C. Reagan-National
$701
Find similar
United Airlines
Feb 4
DCA12:59 pmWashington, D.C. Reagan-National
8h 21m
2 stops
YXU9:20 pmLondon
Feb 11
YXU9:25 amLondon
8h 06m
2 stops
DCA5:31 pmWashington, D.C. Reagan-National
$716
Find similar
United Airlines
Dec 28
IAD8:15 amWashington, D.C. Dulles Intl
13h 06m
2 stops
YXU9:21 pmLondon
Jan 4
YXU5:10 amLondon
12h 20m
2 stops
IAD5:30 pmWashington, D.C. Dulles Intl
$1,202
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 December 22, 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

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sun 5/3

6:59 am-11:43 am

1 stop4h 44m

London

Wed 5/6

12:20 pm-6:13 pm

1 stop5h 53m

$605

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 4/21

4:30 pm-9:18 pm

1 stop4h 48m

London

Fri 4/24

9:25 am-3:39 pm

1 stop6h 14m

$605

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sun 5/3

12:45 pm-9:38 pm

2 stops8h 53m

London

Wed 5/6

6:10 pm-10:28 pm

1 stop4h 18m

$610

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 4/21

4:30 pm-9:18 pm

1 stop4h 48m

London

Fri 4/24

9:25 am-7:40 pm

2 stops10h 15m

$614

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Sun 5/3

12:45 pm-9:38 pm

2 stops8h 53m

London

Wed 5/6

6:00 am-12:01 pm

2 stops6h 01m

$615

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 4/21

9:55 am-5:03 pm

2 stops7h 08m

London

Fri 4/24

9:25 am-7:40 pm

2 stops10h 15m

$622

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Wed 2/4

1:18 pm-9:20 pm

2 stops8h 02m

London

Wed 2/11

5:10 am-8:55 am

1 stop3h 45m

$701

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 2/4

12:40 pm-9:20 pm

2 stops8h 40m

London

Wed 2/11

9:25 am-3:49 pm

1 stop6h 24m

$701

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Wed 2/4

12:59 pm-9:20 pm

2 stops8h 21m

London

Wed 2/11

9:25 am-5:31 pm

2 stops8h 06m

$716

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 2/4

11:40 am-6:35 am

3 stops18h 55m

London

Wed 2/11

8:10 pm-5:14 pm

3 stops21h 04m

$886

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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

Fastest flight time

4h 05m

Direct flights

None
The fastest flight from District of Columbia to London, Ontario takes 4h 05m
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.

An easier way to manage your London, Ontario 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
Wed 1/21
Wed 1/28
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Canada