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.

£248 CHEAP FLIGHTS from District of Columbia to London Heathrow (LHR)

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Flight Deals

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

Thu, 3 Dec - Fri, 11 Dec

20:30 - 18:50IAD Washington, D.C. Dulles Intl-LHR London Heathrow

17h 20m2 stops Kastrup Copenhagen Oslo Gardermoen

13:55 - 18:50LHR London Heathrow-IAD Washington, D.C. Dulles Intl

33h 55m2 stops Stockholm Arlanda Kastrup Copenhagen

£514Scandinavian Airlines

Mon, 28 Dec - Thu, 7 Jan

20:30 - 21:40IAD Washington, D.C. Dulles Intl-LHR London Heathrow

20h 10m1 stop Kastrup Copenhagen

10:20 - 17:15LHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 55m1 stop Kastrup Copenhagen

£514Scandinavian Airlines

Wed, 25 Nov - Wed, 2 Dec

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

18h 50m1 stop Reykjavik Keflavik Intl

12:15 - 18:30LHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 15m1 stop Reykjavik Keflavik Intl

£533Icelandair

Wed, 9 Dec - Wed, 16 Dec

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

18h 50m1 stop Reykjavik Keflavik Intl

12:15 - 18:30LHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 15m1 stop Reykjavik Keflavik Intl

£533Icelandair

Wed, 6 Jan - Wed, 13 Jan

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

7h 10mdirect

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

8h 30mdirect

£539British Airways

Wed, 31 Mar - Fri, 2 Apr

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

7h 30mdirect

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

13h 00m1 stop Zurich

£552United Airlines

Sun, 11 Apr - Tue, 13 Apr

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

7h 30mdirect

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

13h 00m1 stop Zurich

£552United Airlines

Thu, 28 Jan - Tue, 2 Feb

21:45 - 10:00IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 15mdirect

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

8h 25mdirect

£579British Airways

Sun, 21 Mar - Thu, 25 Mar

19:40 - 10:30IAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 50m1 stop Paris Charles de Gaulle

08:40 - 16:45LHR London Heathrow-IAD Washington, D.C. Dulles Intl

12h 05m1 stop Amsterdam Schiphol

£626Virgin Atlantic

Sun, 21 Mar - Thu, 25 Mar

19:55 - 07:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mdirect

08:40 - 16:45LHR London Heathrow-IAD Washington, D.C. Dulles Intl

12h 05m1 stop Amsterdam Schiphol

£638Virgin Atlantic

Recent last minute flight deals from District of Columbia to Heathrow

Sun, 18 Oct - Fri, 23 Oct

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

17h 10m1 stop Kastrup Copenhagen

07:05 - 17:00LHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 55m2 stops Oslo Gardermoen Kastrup Copenhagen

£567Scandinavian Airlines

Thu, 15 Oct - Fri, 20 Nov

17:45 - 11:00IAD Washington, D.C. Dulles Intl-LHR London Heathrow

12h 15m1 stop Lisbon Humberto Delgado

12:25 - 20:30LHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 05m1 stop Lisbon Humberto Delgado

£569TAP AIR PORTUGAL

Thu, 15 Oct - Thu, 29 Oct

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

10h 25m1 stop Reykjavik Keflavik Intl

12:15 - 19:30LHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 15m1 stop Reykjavik Keflavik Intl

£665Icelandair

Wed, 14 Oct - Wed, 21 Oct

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

7h 35mdirect

11:30 - 19:35LHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 05m1 stop Paris Charles de Gaulle

£680Virgin Atlantic

Wed, 14 Oct - Thu, 10 Dec

23:20 - 20:20IAD Washington, D.C. Dulles Intl-LHR London Heathrow

16h 00m1 stop Reykjavik Keflavik Intl

12:15 - 18:30LHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 15m1 stop Reykjavik Keflavik Intl

£681Icelandair

Wed, 14 Oct - Wed, 21 Oct

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

7h 35mdirect

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

8h 25mdirect

£683Virgin Atlantic

Wed, 14 Oct - Thu, 22 Oct

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

7h 35mdirect

06:30 - 15:35LHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 05m1 stop Amsterdam Schiphol

£697Delta

Sun, 18 Oct - Wed, 28 Oct

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

7h 35mdirect

06:30 - 16:55LHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 25m1 stop Amsterdam Schiphol

£697Delta

Wed, 14 Oct - Wed, 21 Oct

22:25 - 10:50IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mdirect

12:35 - 15:55LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 20mdirect

£702British Airways

Wed, 14 Oct - Tue, 20 Oct

22:25 - 10:50IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mdirect

12:35 - 15:55LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 20mdirect

£702British Airways

Recent direct flight deals from District of Columbia to Heathrow

Wed, 6 Jan - Wed, 13 Jan

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

7h 10mdirect

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

8h 30mdirect

£539British Airways

Thu, 28 Jan - Tue, 2 Feb

21:45 - 10:00IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 15mdirect

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

8h 25mdirect

£579British Airways

Sun, 17 Jan - Sun, 24 Jan

21:45 - 10:00IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 15mdirect

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

8h 30mdirect

£611Iberia

Wed, 3 Feb - Wed, 10 Feb

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

7h 10mdirect

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

8h 30mdirect

£611Multiple Airlines

Tue, 30 Mar - Tue, 6 Apr

22:35 - 11:00IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mdirect

17:10 - 20:40LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 30mdirect

£658Virgin Atlantic

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

£666Virgin Atlantic

Mon, 8 Mar - Thu, 18 Mar

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

7h 25mdirect

13:20 - 18:00LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 40mdirect

£674Delta

Mon, 8 Mar - Tue, 16 Mar

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

7h 25mdirect

13:20 - 18:00LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 40mdirect

£674Delta

Wed, 17 Mar - Wed, 31 Mar

19:20 - 06:40IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 20mdirect

12:15 - 15:30LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 15mdirect

£674United Airlines

Sun, 14 Mar - Tue, 30 Mar

23:35 - 10:50IAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 15mdirect

12:15 - 15:30LHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 15mdirect

£674United Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	£249

Best time to beat the crowds (28% 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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£248 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