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>

£160 CHEAP FLIGHTS from District of Columbia to London Heathrow (LHR)

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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

Thu, 16 Oct - Sun, 19 Oct

22:05 - 09:20IAD-LHR

30h 15m1 stop

06:40 - 19:59LHR-IAD

18h 19m2 stops

£298Scandinavian Airlines

Find Deal

Tue, 9 Sep - Wed, 19 Nov

17:00 - 10:20IAD-LHR

12h 20m1 stop

18:30 - 15:15LHR-IAD

25h 45m1 stop

£310TAP AIR PORTUGAL

Find Deal

Mon, 13 Oct - Thu, 13 Nov

22:05 - 18:30IAD-LHR

15h 25m1 stop

06:40 - 17:15LHR-IAD

15h 35m2 stops

£311Scandinavian Airlines

Find Deal

Mon, 11 Aug - Wed, 20 Aug

17:50 - 06:20IAD-LHR

7h 30mdirect

06:30 - 15:35LHR-IAD

14h 05m1 stop

£341Virgin Atlantic

Find Deal

Fri, 7 Nov - Sun, 9 Nov

09:55 - 07:10IAD-LHR

16h 15m1 stop

06:00 - 16:30LHR-IAD

15h 30m1 stop

£344

Find Deal

Mon, 11 Aug - Wed, 20 Aug

17:50 - 06:20IAD-LHR

7h 30mdirect

12:35 - 16:00LHR-IAD

8h 25mdirect

£345Virgin Atlantic

Find Deal

Sun, 10 Aug - Tue, 19 Aug

17:31 - 10:10IAD-LHR

11h 39m1 stop

06:50 - 14:25LHR-IAD

12h 35m1 stop

£349United Airlines

Find Deal

Wed, 13 Aug - Wed, 27 Aug

15:29 - 06:45DCA-LHR

10h 16m1 stop

14:05 - 21:48LHR-DCA

12h 43m1 stop

£350Lufthansa

Find Deal

Sun, 10 Aug - Tue, 19 Aug

17:31 - 10:10IAD-LHR

11h 39m1 stop

06:50 - 14:25LHR-IAD

12h 35m1 stop

£351United Airlines

Find Deal

Tue, 19 Aug - Tue, 26 Aug

09:40 - 06:30DCA-LHR

15h 50m1 stop

06:50 - 15:48LHR-DCA

13h 58m2 stops

£352

Find Deal

Useful Info

Low season	February
High season	July
Cheapest flight	£160

Best time to beat the crowds (8% less expensive on average)

Most popular time to fly (11% more expensive on average)

Flight from Washington Dulles Airport to London Heathrow Airport

DeeFlew with United AirlinesIAD-LHRFeb 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 AirwaysIAD-LHROct 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 AirlinesIAD-LHRJun 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

Luton

Swindon

Northampton

Southend-on-Sea

Winchester

Slough

Croydon

Stansted

Poole

Folkestone

Chichester

Maidstone

Colchester

Salisbury

Chelmsford

Crawley

Bedford

Everything you need to know for your flight to Heathrow

Airports

Cabin class

Complete your trip

Direct flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on your arrival and departure airports

London Heathrow Airport (LHR)

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£160 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

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

Choose which airport to fly into in London

Find deals for your return flight