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Cheap flights from District of Columbia to London from £150

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 5/10. 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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Cheap return flights

Scandinavian Airlines Logo
22:05 - 12:55IAD-LHR
33h 50m2 stops
Scandinavian Airlines Logo
06:40 - 19:59LHR-IAD
18h 19m1 stop
£282Scandinavian Airlines
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Mon, 20 Oct - Thu, 23 Oct
Scandinavian Airlines Logo
22:05 - 12:55IAD-LHR
33h 50m2 stops
Scandinavian Airlines Logo
07:05 - 19:59LHR-IAD
17h 54m2 stops
£309Scandinavian Airlines
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Mon, 6 Oct - Thu, 9 Oct
Scandinavian Airlines Logo
22:05 - 08:55IAD-LHR
29h 50m2 stops
Scandinavian Airlines Logo
06:40 - 19:59LHR-IAD
18h 19m1 stop
£310Scandinavian Airlines
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Sat, 4 Oct - Tue, 7 Oct
TAP AIR PORTUGAL Logo
17:50 - 18:50IAD-LHR
20h 00m1 stop
TAP AIR PORTUGAL Logo
06:00 - 20:50LHR-IAD
19h 50m1 stop
£312TAP AIR PORTUGAL
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Wed, 8 Oct - Thu, 16 Oct
TAP AIR PORTUGAL Logo
18:30 - 21:35IAD-LHR
23h 05m1 stop
TAP AIR PORTUGAL Logo
06:00 - 15:15LHR-IAD
14h 15m1 stop
£313TAP AIR PORTUGAL
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Mon, 27 Oct - Thu, 6 Nov
British Airways Logo
19:25 - 07:45IAD-LHR
7h 20mdirect
British Airways Logo
14:25 - 17:30LHR-IAD
8h 05mdirect
£364British Airways
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Wed, 8 Oct - Wed, 15 Oct
British Airways Logo
17:50 - 06:15IAD-LHR
7h 25mdirect
British Airways Logo
14:30 - 17:35LHR-IAD
8h 05mdirect
£365British Airways
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Mon, 6 Oct - Tue, 14 Oct
Logo
20:45 - 16:25IAD-LHR
14h 40m1 stop
Logo
19:30 - 14:35LHR-IAD
24h 05m1 stop
£366
Find Deal
Wed, 10 Sep - Mon, 15 Sep
SWISS Logo
20:45 - 16:25IAD-LHR
14h 40m1 stop
SWISS Logo
18:40 - 16:15LHR-IAD
26h 35m1 stop
£367SWISS
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Wed, 3 Sep - Wed, 10 Sep
Logo
09:40 - 06:30DCA-LHR
15h 50m1 stop
Logo
11:10 - 21:56LHR-DCA
15h 46m2 stops
£458
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Tue, 30 Sep - Wed, 12 Nov

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
26 Aug
IAD20:30Washington, D.C. Dulles Intl
10h 25m
1 stop
LHR11:55London Heathrow
15 Sept
LHR21:25London Heathrow
26h 55m
1 stop
IAD19:20Washington, D.C. Dulles Intl
£378
Find similar
Icelandair
25 Aug
IAD23:15Washington, D.C. Dulles Intl
31h 40m
1 stop
LHR11:55London Heathrow
4 Sept
LHR13:05London Heathrow
11h 15m
1 stop
IAD19:20Washington, D.C. Dulles Intl
£415
Find similar
Icelandair
26 Aug
IAD20:30Washington, D.C. Dulles Intl
10h 25m
1 stop
LHR11:55London Heathrow
9 Sept
LHR21:25London Heathrow
26h 55m
1 stop
IAD19:20Washington, D.C. Dulles Intl
£430
Find similar

British Airways flights from District of Columbia to London Heathrow Airport

Our best British Airways deals on District of Columbia to London Heathrow Airport flight tickets
British Airways
8 Oct
IAD19:25Washington, D.C. Dulles Intl
7h 20m
LHR07:45London Heathrow
15 Oct
LHR14:25London Heathrow
8h 05m
IAD17:30Washington, D.C. Dulles Intl
£364
Find similar
British Airways
6 Oct
IAD17:50Washington, D.C. Dulles Intl
7h 25m
LHR06:15London Heathrow
14 Oct
LHR14:30London Heathrow
8h 05m
IAD17:35Washington, D.C. Dulles Intl
£365
Find similar
British Airways
21 Sept
IAD19:25Washington, D.C. Dulles Intl
7h 20m
LHR07:45London Heathrow
7 Oct
LHR17:00London Heathrow
8h 15m
IAD20:15Washington, D.C. Dulles Intl
£369
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momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 15 August 2025.
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 20/10

22:05-12:55

2 stops33h 50m

London Heathrow

Thu 23/10

06:40-19:59

1 stop18h 19m

£282

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 6/10

22:05-12:55

2 stops33h 50m

London Heathrow

Thu 9/10

07:05-19:59

2 stops17h 54m

£309

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sat 4/10

22:05-08:55

2 stops29h 50m

London Heathrow

Tue 7/10

06:40-19:59

1 stop18h 19m

£310

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 8/10

17:50-18:50

1 stop20h 00m

London Heathrow

Thu 16/10

06:00-20:50

1 stop19h 50m

£312

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 27/10

18:30-21:35

1 stop23h 05m

London Heathrow

Thu 6/11

06:00-15:15

1 stop14h 15m

£313

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 8/10

19:25-07:45

Nonstop7h 20m

London Heathrow

Wed 15/10

14:25-17:30

Nonstop8h 05m

£364

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 6/10

17:50-06:15

Nonstop7h 25m

London Heathrow

Tue 14/10

14:30-17:35

Nonstop8h 05m

£365

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 10/9

20:45-16:25

1 stop14h 40m

London Heathrow

Mon 15/9

19:30-14:35

1 stop24h 05m

£366

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 3/9

20:45-16:25

1 stop14h 40m

London Heathrow

Wed 10/9

18:40-16:15

1 stop26h 35m

£367

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 30/9

09:40-06:30

1 stop15h 50m

London Heathrow

Wed 12/11

11:10-21:56

2 stops15h 46m

£458

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

In general, September is the cheapest month to fly from District of Columbia to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £501. The month of August is another great option to travel to London Heathrow Airport, with average flight prices from District of Columbia averaging around £504.

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

On average, the least expensive day to fly to London Heathrow Airport from District of Columbia is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £529. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Sunday is £620.

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 evening. momondo users have found flights departing from District of Columbia to London Heathrow Airport in the evening for as low as £561. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £581 on average. Flights to London Heathrow Airport from District of Columbia in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 £556 when searching weeks before you fly. 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 £511 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.

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

£150

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 £150. The best return flight deal from District of Columbia to London Heathrow Airport found on momondo in the last 72 hours is £282.
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 refresh 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 necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted 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
LufthansaPriceFrom £306Free CancellationRating
6.8
7,321 reviews
Search Lufthansa flights
IcelandairPriceFrom £353Free CancellationRating
7.0
526 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom £374Free CancellationRating
7.4
657 reviews
Search Virgin Atlantic flights
Air FrancePriceFrom £393Free CancellationRating
7.4
1,468 reviews
Search Air France flights
British AirwaysPriceFrom £403Free CancellationRating
6.6
7,267 reviews
Search British Airways flights
IberiaPriceFrom £410Free CancellationRating
7.0
2,882 reviews
Search Iberia flights
KLMPriceFrom £455Free CancellationRating
7.8
1,384 reviews
Search KLM flights
United AirlinesPriceFrom £482Free CancellationRating
7.4
8,915 reviews
Search United Airlines flights
American AirlinesPriceFrom £489Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
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Ipswich
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Dartford
Dover

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?

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?

momondo helps you find the best flight between District of Columbia and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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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