How does KAYAK find such low prices on flights from District of Columbia to London Heathrow Airport?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to London Heathrow Airport.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to London Heathrow Airport?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from District of Columbia is likely to change within 7 days, so travellers know whether to wait or book now.

What is the Hacker Fare option on flights from District of Columbia to London Heathrow Airport?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to District of Columbia with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to London Heathrow Airport?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

£249 CHEAP FLIGHTS from District of Columbia to London Heathrow (LHR)

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Cheap Flights from District of Columbia to Heathrow

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Last minute

Direct

Recent return flight deals from District of Columbia to Heathrow

Fri, 27 Nov - Wed, 2 Dec

19:40 - 19:30IAD Washington, D.C. Dulles Intl-LHR London Heathrow

18h 50m1 stop Reykjavik Keflavik Intl

20:35 - 18:30LHR London Heathrow-IAD Washington, D.C. Dulles Intl

26h 55m1 stop Reykjavik Keflavik Intl

£521Icelandair

Wed, 2 Dec - Mon, 14 Dec

19:40 - 19:30IAD Washington, D.C. Dulles Intl-LHR London Heathrow

18h 50m1 stop Reykjavik Keflavik Intl

20:35 - 18:30LHR London Heathrow-IAD Washington, D.C. Dulles Intl

26h 55m1 stop Reykjavik Keflavik Intl

£521Icelandair

Sat, 5 Dec - Mon, 7 Dec

20:30 - 21:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

19h 50m2 stops Kastrup Copenhagen Stockholm Arlanda

19:30 - 11:49LHR London Heathrow-IAD Washington, D.C. Dulles Intl

45h 19m2 stops Kastrup Copenhagen New York John F Kennedy Intl

£521Scandinavian Airlines

Sat, 5 Dec - Mon, 7 Dec

20:30 - 21:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

19h 50m2 stops Kastrup Copenhagen Stockholm Arlanda

17:00 - 11:49LHR London Heathrow-IAD Washington, D.C. Dulles Intl

47h 49m2 stops Kastrup Copenhagen New York John F Kennedy Intl

£521Scandinavian Airlines

Sun, 24 Jan - Tue, 26 Jan

22:15 - 10:50IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mdirect

09:00 - 17:00LHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 00m1 stop Zurich

£552United Airlines

Wed, 20 Jan - Fri, 22 Jan

22:15 - 10:50IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mdirect

09:00 - 17:00LHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 00m1 stop Zurich

£552United Airlines

Wed, 28 Oct - Thu, 5 Nov

22:55 - 10:10IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 15mdirect

16:25 - 19:55LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 30mdirect

£553British Airways

Wed, 27 Jan - Thu, 4 Feb

18:05 - 06:15IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 10mdirect

06:15 - 16:20LHR London Heathrow-IAD Washington, D.C. Dulles Intl

15h 05m1 stop Madrid Barajas

£587British Airways

Thu, 12 Nov - Wed, 18 Nov

20:45 - 09:10IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mdirect

10:00 - 15:55LHR London Heathrow-IAD Washington, D.C. Dulles Intl

10h 55m1 stop Amsterdam Schiphol

£618Virgin Atlantic

Wed, 11 Nov - Wed, 18 Nov

18:55 - 07:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mdirect

06:30 - 15:55LHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 25m1 stop Amsterdam Schiphol

£629Virgin Atlantic

Recent last minute flight deals from District of Columbia to Heathrow

Sun, 11 Oct - Tue, 20 Oct

17:00 - 16:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

18h 20m1 stop Madrid Barajas

09:15 - 18:50LHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 35m1 stop Madrid Barajas

£525Iberia

Sun, 11 Oct - Sat, 24 Oct

20:20 - 21:40IAD Washington, D.C. Dulles Intl-LHR London Heathrow

20h 20m1 stop Kastrup Copenhagen

06:40 - 17:00LHR London Heathrow-IAD Washington, D.C. Dulles Intl

15h 20m1 stop Kastrup Copenhagen

£586Scandinavian Airlines

Tue, 6 Oct - Wed, 21 Oct

20:30 - 11:55IAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 25m1 stop Reykjavik Keflavik Intl

21:25 - 19:20LHR London Heathrow-IAD Washington, D.C. Dulles Intl

26h 55m1 stop Reykjavik Keflavik Intl

£650Icelandair

Tue, 6 Oct - Tue, 20 Oct

20:30 - 11:55IAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 25m1 stop Reykjavik Keflavik Intl

21:25 - 22:15LHR London Heathrow-IAD Washington, D.C. Dulles Intl

29h 50m1 stop Reykjavik Keflavik Intl

£650Icelandair

Tue, 6 Oct - Tue, 20 Oct

17:45 - 06:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mdirect

11:30 - 18:50LHR London Heathrow-IAD Washington, D.C. Dulles Intl

12h 20m1 stop Madrid Barajas

£700British Airways

Tue, 6 Oct - Wed, 14 Oct

17:45 - 06:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mdirect

17:05 - 20:20LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 15mdirect

£701British Airways

Tue, 6 Oct - Wed, 21 Oct

22:05 - 10:40IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mdirect

06:15 - 16:05LHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 50m1 stop Paris Charles de Gaulle

£763Virgin Atlantic

Wed, 7 Oct - Wed, 21 Oct

22:20 - 13:45IAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 25m1 stop Paris Charles de Gaulle

15:50 - 19:15LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mdirect

£769Virgin Atlantic

Sun, 11 Oct - Tue, 20 Oct

18:35 - 06:55IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 20mdirect

08:45 - 16:45LHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 00m1 stop Zurich

£772United Airlines

Tue, 6 Oct - Tue, 13 Oct

22:10 - 08:35IAD Washington, D.C. Dulles Intl-LHR London Heathrow

29h 25m1 stop Ottawa

08:45 - 16:45LHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 00m1 stop Zurich

£772United Airlines

Recent direct flight deals from District of Columbia to Heathrow

Wed, 28 Oct - Thu, 5 Nov

22:55 - 10:10IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 15mdirect

16:25 - 19:55LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 30mdirect

£553British Airways

Sat, 12 Dec - Tue, 2 Mar

18:05 - 06:15IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 10mdirect

12:15 - 15:40LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mdirect

£597British Airways

Sun, 31 Jan - Sun, 7 Feb

18:55 - 07:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mdirect

12:15 - 15:40LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mdirect

£609Multiple Airlines

Wed, 6 Jan - Wed, 3 Feb

18:55 - 07:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mdirect

12:15 - 15:40LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mdirect

£610Multiple Airlines

Sun, 8 Nov - Tue, 17 Nov

18:55 - 07:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mdirect

13:20 - 17:00LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 40mdirect

£639Virgin Atlantic

Mon, 2 Nov - Tue, 10 Nov

22:15 - 10:50IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mdirect

16:20 - 20:15LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 55mdirect

£658United Airlines

Mon, 2 Nov - Tue, 10 Nov

22:15 - 10:50IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mdirect

16:20 - 20:15LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 55mdirect

£661United Airlines

Wed, 4 Nov - Thu, 12 Nov

18:55 - 07:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mdirect

13:20 - 17:00LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 40mdirect

£662Delta

Mon, 16 Nov - Thu, 26 Nov

18:55 - 07:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mdirect

13:20 - 17:00LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 40mdirect

£662Delta

Wed, 2 Dec - Wed, 9 Dec

18:55 - 07:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mdirect

13:20 - 17:00LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 40mdirect

£666Virgin Atlantic

Useful Info

Low season	January
High season	July
Cheapest flight	£249

Best time to beat the crowds (27% less expensive on average)

Most popular time to fly (15% more expensive on average)

Flight from Reagan Washington National Airport to London Heathrow Airport

DeeFlew with United Airlines-Feb 2025

For me the best route to LHR is the late night departure on UAL. The flight is often roughly 6.5 hours so I skip dinner, use an eye mask and earplugs and try to sleep.

EllenFlew with British Airways-Oct 2024

Do not check your bag if at all possible, especially if you have a connecting flight. Your bag will not make it.

CraigFlew with United Airlines-Jun 2024

Get to beginning of boarding group early. Bring as little on board as possible due to small overhead bin space.

How does KAYAK find such low prices on flights from District of Columbia to London Heathrow Airport?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to London Heathrow Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to London Heathrow Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from District of Columbia is likely to change within 7 days, so travellers know whether to wait or book now.
What is the Hacker Fare option on flights from District of Columbia to London Heathrow Airport?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to District of Columbia with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to London Heathrow Airport?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Gatwick

Eastbourne

Milton Keynes

Hounslow

Luton

Northampton

Southend-on-Sea

Newport

Folkestone

Poole

Winchester

Swindon

Croydon

Slough

Stansted

Colchester

Crawley

Chichester

Maidstone

Salisbury

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£249 Find Cheap Flights from District of Columbia to London Heathrow Airport – Compare and Save

Cheap Flights from District of Columbia to Heathrow

Recent return flight deals from District of Columbia to Heathrow

Recent one-way flight deals from District of Columbia to Heathrow

Recent last minute flight deals from District of Columbia to Heathrow

Recent direct flight deals from District of Columbia to Heathrow

Good to know - Cheap tickets from District of Columbia to London Heathrow Airport

Low season

High season

Cheapest flight

Flights from District of Columbia to Heathrow: the best tips from KAYAK users

FAQs for booking District of Columbia to London Heathrow Airport flights

Travelling to a place near Heathrow?

More options for your flight to Heathrow

Complete your trip to Heathrow with a hotel stay or car hire

Information on your arrival and departure airports

Cabin class types available on flights to Heathrow

Find direct flights for Heathrow

Flights from domestic origins to District of Columbia

Choose which airport to fly into in London

Flights to other popular destinations

Find deals for your return flight