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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

£276 CHEAP FLIGHTS from District of Columbia to London Heathrow (LHR)

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

...and more

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41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest return fare

£427

Typical prices: £477-£623

Scandinavian Airlines

Mon 12/1Mon 19/1

IAD - LHR • 1 stop

Cheapest direct flights

£457

Typical prices: £492-£637

Virgin Atlantic

Tue 13/1Tue 20/1

IAD - LHR • Direct

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KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you love your trip to Heathrow!

Flight Deals

Cheap Flights from District of Columbia to Heathrow

Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from District of Columbia to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

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

Round-trip

One-way

Last minute

Direct

Recent return flight deals from District of Columbia to Heathrow

Mon, 12 Jan - Mon, 19 Jan

20:30 - 18:30

IAD

LHR

17h 00m1 stop

21:05 - 17:15

LHR

IAD

49h 10m2 stops

£427Scandinavian Airlines

Mon, 12 Jan - Mon, 26 Jan

20:30 - 18:50

IAD

LHR

17h 20m2 stops

06:40 - 15:20

LHR

IAD

13h 40m1 stop

£428Scandinavian Airlines

Wed, 18 Feb - Tue, 24 Feb

20:30 - 16:25

IAD

LHR

14h 55m2 stops

19:50 - 17:15

LHR

IAD

26h 25m2 stops

£429Scandinavian Airlines

Thu, 8 Jan - Sun, 11 Jan

19:40 - 10:50

IAD

LHR

10h 10m1 stop

20:35 - 18:30

LHR

IAD

26h 55m1 stop

£430Icelandair

Sat, 28 Feb - Sun, 8 Mar

20:30 - 21:35

IAD

LHR

20h 05m2 stops

19:50 - 18:15

LHR

IAD

26h 25m2 stops

£430Scandinavian Airlines

Thu, 19 Feb - Sun, 22 Feb

19:40 - 10:50

IAD

LHR

10h 10m1 stop

12:15 - 18:30

LHR

IAD

11h 15m1 stop

£433Icelandair

Thu, 12 Feb - Sat, 21 Feb

17:17 - 11:15

IAD

LHR

12h 58m1 stop

08:30 - 15:50

LHR

IAD

12h 20m1 stop

£434Multiple Airlines

Sun, 8 Feb - Tue, 24 Feb

12:55 - 09:20

DCA

LHR

15h 25m1 stop

06:50 - 15:33

LHR

DCA

13h 43m2 stops

£442Air Canada

Thu, 29 Jan - Thu, 5 Feb

16:15 - 07:10

DCA

LHR

9h 55m1 stop

06:50 - 15:33

LHR

DCA

13h 43m2 stops

£444Air Canada

Thu, 29 Jan - Thu, 5 Feb

12:55 - 07:10

DCA

LHR

13h 15m2 stops

06:50 - 15:33

LHR

DCA

13h 43m2 stops

£447Multiple Airlines

Useful Info

Low season	February
High season	July
Cheapest flight	£276

Best time to beat the crowds (7% less expensive on average)

Most popular time to fly (9% more expensive on average)

Flight from Washington Dulles Airport to London Heathrow Airport

DeeFlew with United Airlines

IAD

LHR

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

IAD

LHR

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

IAD

LHR

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

Milton Keynes

Eastbourne

Hounslow

Luton

Southend-on-Sea

Swindon

Northampton

Slough

Winchester

Croydon

Stansted

Poole

Folkestone

Chichester

Maidstone

Salisbury

Colchester

Chelmsford

Crawley

Everything you need to know for your flight to Heathrow

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London Heathrow Airport (LHR)

£276 Find Cheap Flights from District of Columbia to London Heathrow Airport

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

Everything you should know

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

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

FAQs for booking District of Columbia to London Heathrow Airport flights

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?

Travelling to a place near Heathrow?

Everything you need to know for your flight to Heathrow

Information on your arrival and departure airports

Cabin class types available on flights to Heathrow

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

Find direct flights for Heathrow

Flights to other popular destinations

Flights from domestic origins to District of Columbia

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