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Cheap flights from District of Columbia to London from $331

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 4/13. 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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0 bags

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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.
Scandinavian Airlines Logo
8:20 pm - 9:20 am
IAD
-
LHR
32h 00m
1 stop
Scandinavian Airlines Logo
7:05 am - 5:00 pm
LHR
-
IAD
14h 55m
2 stops
$570Scandinavian Airlines
Mon, Apr 20 - Thu, Apr 23
Scandinavian Airlines Logo
8:20 pm - 9:40 pm
IAD
-
LHR
20h 20m
1 stop
Scandinavian Airlines Logo
7:05 am - 5:00 pm
LHR
-
IAD
14h 55m
2 stops
$571Scandinavian Airlines
Sun, Apr 12 - Fri, Apr 17
Scandinavian Airlines Logo
8:20 pm - 4:00 pm
IAD
-
LHR
14h 40m
1 stop
Scandinavian Airlines Logo
10:20 am - 5:00 pm
LHR
-
IAD
11h 40m
1 stop
$572Scandinavian Airlines
Sun, Apr 19 - Fri, Apr 24
Scandinavian Airlines Logo
8:20 pm - 5:40 pm
IAD
-
LHR
16h 20m
1 stop
Scandinavian Airlines Logo
7:05 am - 5:00 pm
LHR
-
IAD
14h 55m
2 stops
$573Scandinavian Airlines
Sun, Apr 12 - Fri, Apr 17
TAP AIR PORTUGAL Logo
5:05 pm - 10:20 am
IAD
-
LHR
12h 15m
1 stop
TAP AIR PORTUGAL Logo
7:50 pm - 3:10 pm
LHR
-
IAD
24h 20m
1 stop
$574TAP AIR PORTUGAL
Fri, Apr 24 - Wed, Apr 29
Icelandair Logo
8:30 pm - 8:20 pm
IAD
-
LHR
18h 50m
1 stop
Icelandair Logo
9:25 pm - 7:20 pm
LHR
-
IAD
26h 55m
1 stop
$576Icelandair
Sat, May 16 - Wed, May 20
Delta Logo
10:10 am - 7:50 am
DCA
-
LHR
17h 40m
1 stop
Delta Logo
11:45 am - 10:37 pm
LHR
-
DCA
15h 52m
2 stops
$642Delta
Wed, Mar 25 - Tue, Mar 31
Air Canada Logo
11:05 am - 7:10 am
DCA
-
LHR
16h 05m
1 stop
Air Canada Logo
8:30 am - 7:53 pm
LHR
-
DCA
16h 23m
1 stop
$644Air Canada
Tue, Mar 24 - Tue, Mar 31
Air Canada Logo
12:55 pm - 8:35 am
DCA
-
LHR
14h 40m
1 stop
Air Canada Logo
6:50 am - 3:39 pm
LHR
-
DCA
13h 49m
2 stops
$645Air Canada
Wed, Apr 22 - Tue, May 19
Delta Logo
10:00 am - 6:50 am
DCA
-
LHR
16h 50m
1 stop
Delta Logo
11:45 am - 11:44 pm
LHR
-
DCA
15h 59m
2 stops
$652Delta
Mon, Mar 16 - Wed, Mar 25

Scandinavian Airlines flights from District of Columbia to London Heathrow Airport

Our best Scandinavian Airlines deals on District of Columbia to London Heathrow Airport flight tickets
Scandinavian Airlines
Apr 20
IAD8:20 pmWashington, D.C. Dulles Intl
32h 00m
1 stop
LHR9:20 amLondon Heathrow
Apr 23
LHR7:05 amLondon Heathrow
14h 55m
2 stops
IAD5:00 pmWashington, D.C. Dulles Intl
$570
Scandinavian Airlines
Apr 12
IAD8:20 pmWashington, D.C. Dulles Intl
20h 20m
1 stop
LHR9:40 pmLondon Heathrow
Apr 17
LHR7:05 amLondon Heathrow
14h 55m
2 stops
IAD5:00 pmWashington, D.C. Dulles Intl
$571
Scandinavian Airlines
Apr 19
IAD8:20 pmWashington, D.C. Dulles Intl
14h 40m
1 stop
LHR4:00 pmLondon Heathrow
Apr 24
LHR10:20 amLondon Heathrow
11h 40m
1 stop
IAD5:00 pmWashington, D.C. Dulles Intl
$572

Icelandair flights from District of Columbia to London Heathrow Airport

Our best Icelandair deals on District of Columbia to London Heathrow Airport flight tickets
Icelandair
May 16
IAD8:30 pmWashington, D.C. Dulles Intl
18h 50m
1 stop
LHR8:20 pmLondon Heathrow
May 20
LHR9:25 pmLondon Heathrow
26h 55m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
$576
Icelandair
May 1
IAD8:30 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
LHR11:55 amLondon Heathrow
May 12
LHR9:25 pmLondon Heathrow
29h 50m
1 stop
IAD10:15 pmWashington, D.C. Dulles Intl
$582
Icelandair
May 9
IAD8:30 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
LHR11:55 amLondon Heathrow
May 31
LHR9:25 pmLondon Heathrow
26h 55m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
$583

momondo Fare Finder

 
Customize your flight search to find flights from District of Columbia to London Heathrow Airport 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 March 2, 2026.
Use the filters below to find and compare flights from District of Columbia to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 4/20

8:20 pm-9:20 am

1 stop32h 00m

London Heathrow

Thu 4/23

7:05 am-5:00 pm

2 stops14h 55m

$570

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 4/12

8:20 pm-9:40 pm

1 stop20h 20m

London Heathrow

Fri 4/17

7:05 am-5:00 pm

2 stops14h 55m

$571

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 4/19

8:20 pm-4:00 pm

1 stop14h 40m

London Heathrow

Fri 4/24

10:20 am-5:00 pm

1 stop11h 40m

$572

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 4/12

8:20 pm-5:40 pm

1 stop16h 20m

London Heathrow

Fri 4/17

7:05 am-5:00 pm

2 stops14h 55m

$573

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 4/24

5:05 pm-10:20 am

1 stop12h 15m

London Heathrow

Wed 4/29

7:50 pm-3:10 pm

1 stop24h 20m

$574

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sat 5/16

8:30 pm-8:20 pm

1 stop18h 50m

London Heathrow

Wed 5/20

9:25 pm-7:20 pm

1 stop26h 55m

$576

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 3/25

10:10 am-7:50 am

1 stop17h 40m

London Heathrow

Tue 3/31

11:45 am-10:37 pm

2 stops15h 52m

$642

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 3/24

11:05 am-7:10 am

1 stop16h 05m

London Heathrow

Tue 3/31

8:30 am-7:53 pm

1 stop16h 23m

$644

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 4/22

12:55 pm-8:35 am

1 stop14h 40m

London Heathrow

Tue 5/19

6:50 am-3:39 pm

2 stops13h 49m

$645

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 3/16

10:00 am-6:50 am

1 stop16h 50m

London Heathrow

Wed 3/25

11:45 am-11:44 pm

2 stops15h 59m

$652

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 Heathrow Airport

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 month to fly to London Heathrow Airport?

The month of August is, on average, the cheapest month to fly to London Heathrow Airport from District of Columbia, with most prices found around $657. If you’re not able to fly to London Heathrow Airport in August, then September is your next best option. Flight prices from District of Columbia to London Heathrow Airport during September average around $661.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $757. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $880.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from District of Columbia to London Heathrow Airport in the afternoon for as low as $803. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $810.

What is the cheapest District of Columbia to London Heathrow flight route?

Fly from Baltimore/Washington to London Heathrow for the best District of Columbia - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from District of Columbia when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $765 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from District of Columbia for as low as $711 on momondo.

What cabin class options are available on District of Columbia to London Heathrow flights?

There are 4 cabin classes available to choose from on District of Columbia to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on District of Columbia to London Heathrow Airport flights?

You could potentially save up to 21% on your flight if you consider stops on a District of Columbia to London Heathrow Airport flight.

Cheap District of Columbia to London Heathrow Airport flight deals and tips

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

Best Price Found

$405

Fastest flight time

7h 10m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from District of Columbia in the past 72 hours is $405. The best round-trip flight deal from District of Columbia to London Heathrow Airport found on momondo in the last 72 hours is $699.
The fastest flight from District of Columbia to London Heathrow Airport takes 7h 10m
Direct flights go from District of Columbia to London Heathrow Airport every day.
Search flight deals

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

    Prices for flights from District of Columbia to London Heathrow Airport are updated daily.

  • How many operators does momondo search for flights from District of Columbia to London Heathrow Airport?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia to London Heathrow Airport.

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

    The required travel and health documents for your London Heathrow 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 Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from District of Columbia to London Heathrow Airport?

Best airlines flying from District of Columbia to London Heathrow Airport

Compare and see reviews for airlines that fly from District of Columbia to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $31Free CancellationRating
7.2
2,895 reviews
Search JetBlue flights
TAP AIR PORTUGALPriceFrom $411Free CancellationRating
7.1
2,155 reviews
Search TAP AIR PORTUGAL flights
IcelandairPriceFrom $415Free CancellationRating
7.1
617 reviews
Search Icelandair flights
Air FrancePriceFrom $442Free CancellationRating
7.4
1,541 reviews
Search Air France flights
Scandinavian AirlinesPriceFrom $454Free CancellationRating
7.3
1,702 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $462Free CancellationRating
7.4
9,375 reviews
Search United Airlines flights
KLMPriceFrom $488Free CancellationRating
7.7
1,461 reviews
Search KLM flights
Virgin AtlanticPriceFrom $497Free CancellationRating
7.5
680 reviews
Search Virgin Atlantic flights
American AirlinesPriceFrom $497Free CancellationRating
7.1
11,371 reviews
Search American Airlines flights
IberiaPriceFrom $527Free CancellationRating
7.0
3,128 reviews
Search Iberia flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Stratford-upon-Avon
Crawley
Hayes
Wembley
Dartford
Brentwood
Croydon
Guildford
Harrow
Watford
Cobham
Folkestone
Romford
Stansted

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from District of Columbia.

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

momondo does allow users to show only those flights to London from District of Columbia which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from District of Columbia to London.

I’m not ready to book a flight from District of Columbia to London right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of District of Columbia to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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