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Cheap flights from District of Columbia to London from $360

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 5/2. 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.
Scandinavian Airlines Logo
8:20 pm - 4:25 pm
IAD
-
LHR
15h 05m
2 stops
Scandinavian Airlines Logo
6:40 am - 5:00 pm
LHR
-
IAD
15h 20m
1 stop
$664Scandinavian Airlines
Sun, Apr 26 - Thu, Apr 30
TAP AIR PORTUGAL Logo
10:35 pm - 10:00 pm
IAD
-
LHR
18h 25m
1 stop
TAP AIR PORTUGAL Logo
6:45 pm - 3:10 pm
LHR
-
IAD
25h 25m
1 stop
$670TAP AIR PORTUGAL
Sun, Apr 26 - Tue, May 5
Scandinavian Airlines Logo
8:20 pm - 4:00 pm
IAD
-
LHR
14h 40m
1 stop
Scandinavian Airlines Logo
7:30 pm - 5:00 pm
LHR
-
IAD
26h 30m
1 stop
$674Scandinavian Airlines
Sun, Apr 26 - Thu, May 7
Scandinavian Airlines Logo
8:20 pm - 9:40 pm
IAD
-
LHR
20h 20m
1 stop
Scandinavian Airlines Logo
6:40 am - 5:00 pm
LHR
-
IAD
15h 20m
1 stop
$675Scandinavian Airlines
Sun, Apr 26 - Fri, May 1
Scandinavian Airlines Logo
8:20 pm - 4:00 pm
IAD
-
LHR
14h 40m
1 stop
Scandinavian Airlines Logo
7:30 pm - 5:00 pm
LHR
-
IAD
26h 30m
1 stop
$677Scandinavian Airlines
Mon, Apr 27 - Thu, May 7
Scandinavian Airlines Logo
8:20 pm - 4:00 pm
IAD
-
LHR
14h 40m
1 stop
Scandinavian Airlines Logo
6:40 am - 5:00 pm
LHR
-
IAD
15h 20m
1 stop
$678Scandinavian Airlines
Mon, Apr 27 - Thu, May 7
TAP AIR PORTUGAL Logo
10:35 pm - 10:00 pm
IAD
-
LHR
18h 25m
1 stop
TAP AIR PORTUGAL Logo
7:50 pm - 3:10 pm
LHR
-
IAD
24h 20m
1 stop
$683TAP AIR PORTUGAL
Sun, Apr 26 - Tue, May 5
JetBlue Logo
7:00 am - 6:30 am
DCA
-
LHR
18h 30m
1 stop
JetBlue Logo
8:40 am - 3:42 pm
LHR
-
DCA
12h 02m
1 stop
$788JetBlue
Mon, May 4 - Fri, May 8
JetBlue Logo
6:00 am - 8:45 pm
DCA
-
LHR
9h 45m
1 stop
JetBlue Logo
8:40 am - 4:42 pm
LHR
-
DCA
13h 02m
1 stop
$794JetBlue
Sun, May 3 - Thu, May 7
JetBlue Logo
6:00 am - 9:30 am
DCA
-
LHR
22h 30m
1 stop
JetBlue Logo
8:15 am - 10:59 pm
LHR
-
DCA
19h 44m
1 stop
$795JetBlue
Sun, May 10 - Wed, May 13

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 26
IAD8:20 pmWashington, D.C. Dulles Intl
15h 05m
2 stops
LHR4:25 pmLondon Heathrow
Apr 30
LHR6:40 amLondon Heathrow
15h 20m
1 stop
IAD5:00 pmWashington, D.C. Dulles Intl
$664
Scandinavian Airlines
Apr 26
IAD8:20 pmWashington, D.C. Dulles Intl
14h 40m
1 stop
LHR4:00 pmLondon Heathrow
May 7
LHR7:30 pmLondon Heathrow
26h 30m
1 stop
IAD5:00 pmWashington, D.C. Dulles Intl
$674
Scandinavian Airlines
Apr 26
IAD8:20 pmWashington, D.C. Dulles Intl
20h 20m
1 stop
LHR9:40 pmLondon Heathrow
May 1
LHR6:40 amLondon Heathrow
15h 20m
1 stop
IAD5:00 pmWashington, D.C. Dulles Intl
$675

TAP AIR PORTUGAL flights from District of Columbia to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on District of Columbia to London Heathrow Airport flight tickets
TAP AIR PORTUGAL
Apr 26
IAD10:35 pmWashington, D.C. Dulles Intl
18h 25m
1 stop
LHR10:00 pmLondon Heathrow
May 5
LHR6:45 pmLondon Heathrow
25h 25m
1 stop
IAD3:10 pmWashington, D.C. Dulles Intl
$670
TAP AIR PORTUGAL
Apr 19
IAD10:35 pmWashington, D.C. Dulles Intl
18h 25m
1 stop
LHR10:00 pmLondon Heathrow
Apr 29
LHR7:50 pmLondon Heathrow
24h 20m
1 stop
IAD3:10 pmWashington, D.C. Dulles Intl
$681
TAP AIR PORTUGAL
Apr 26
IAD10:35 pmWashington, D.C. Dulles Intl
18h 25m
1 stop
LHR10:00 pmLondon Heathrow
May 5
LHR7:50 pmLondon Heathrow
24h 20m
1 stop
IAD3:10 pmWashington, D.C. Dulles Intl
$683

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 April 13, 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

Cheapest round-trip

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 4/26

8:20 pm-4:25 pm

2 stops15h 05m

London Heathrow

Thu 4/30

6:40 am-5:00 pm

1 stop15h 20m

$664

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 4/26

10:35 pm-10:00 pm

1 stop18h 25m

London Heathrow

Tue 5/5

6:45 pm-3:10 pm

1 stop25h 25m

$670

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 4/26

8:20 pm-4:00 pm

1 stop14h 40m

London Heathrow

Thu 5/7

7:30 pm-5:00 pm

1 stop26h 30m

$674

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 4/26

8:20 pm-9:40 pm

1 stop20h 20m

London Heathrow

Fri 5/1

6:40 am-5:00 pm

1 stop15h 20m

$675

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 4/27

8:20 pm-4:00 pm

1 stop14h 40m

London Heathrow

Thu 5/7

7:30 pm-5:00 pm

1 stop26h 30m

$677

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 4/27

8:20 pm-4:00 pm

1 stop14h 40m

London Heathrow

Thu 5/7

6:40 am-5:00 pm

1 stop15h 20m

$678

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 4/26

10:35 pm-10:00 pm

1 stop18h 25m

London Heathrow

Tue 5/5

7:50 pm-3:10 pm

1 stop24h 20m

$683

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 5/4

7:00 am-6:30 am

1 stop18h 30m

London Heathrow

Fri 5/8

8:40 am-3:42 pm

1 stop12h 02m

$788
Quickest round-trip

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 5/3

6:00 am-8:45 pm

1 stop9h 45m

London Heathrow

Thu 5/7

8:40 am-4:42 pm

1 stop13h 02m

$794

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 5/10

6:00 am-9:30 am

1 stop22h 30m

London Heathrow

Wed 5/13

8:15 am-10:59 pm

1 stop19h 44m

$795

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 $658. 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 $665.

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 $763. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $888.

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 $809. 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 $830.

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

Fly from Washington, D.C. Dulles Intl 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 $781 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 $729 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 36% 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

$498

Fastest flight time

7h 15m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from District of Columbia in the past 72 hours is $498. The best round-trip flight deal from District of Columbia to London Heathrow Airport found on momondo in the last 72 hours is $901.
The fastest flight from District of Columbia to London Heathrow Airport takes 7h 15m
Direct flights go from District of Columbia to London Heathrow Airport every day.
Search flight deals

Frequently asked questions about flying from District of Columbia to London Heathrow Airport

  • 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
IcelandairPriceFrom $398Free CancellationRating
7.0
632 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom $411Free CancellationRating
7.1
2,203 reviews
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesPriceFrom $454Free CancellationRating
7.3
1,749 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $462Free CancellationRating
7.4
9,582 reviews
Search United Airlines flights
Virgin AtlanticPriceFrom $471Free CancellationRating
7.5
687 reviews
Search Virgin Atlantic flights
American AirlinesPriceFrom $497Free CancellationRating
7.1
11,572 reviews
Search American Airlines flights
IberiaPriceFrom $527Free CancellationRating
7.0
3,179 reviews
Search Iberia flights
British AirwaysPriceFrom $529Free CancellationRating
6.7
7,883 reviews
Search British Airways flights
DeltaPriceFrom $530Free CancellationRating
7.9
8,406 reviews
Search Delta flights
Aer LingusPriceFrom $561Free CancellationRating
7.2
1,507 reviews
Search Aer Lingus 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
Hayes
Slough
Stratford-upon-Avon
Wembley
Crawley
Stansted
Croydon
Dartford
Brentwood
Cobham
Folkestone
Guildford
Romford
Harrow
Watford

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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