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>

£249 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

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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.

Round-trip

One-way

Last minute

Direct

Recent return flight deals from District of Columbia to Heathrow

Thu, 16 Apr - Sun, 26 Apr

20:20 - 21:40

IAD

LHR

20h 20m

1 stop

18:40 - 17:00

LHR

IAD

27h 20m

1 stop

£448Scandinavian Airlines

Sat, 9 May - Sun, 10 May

20:20 - 16:00

IAD

LHR

14h 40m

1 stop

21:05 - 17:00

LHR

IAD

24h 55m

2 stops

£449Scandinavian Airlines

Wed, 6 May - Wed, 20 May

20:30 - 11:55

IAD

LHR

10h 25m

1 stop

21:25 - 19:20

LHR

IAD

26h 55m

1 stop

£450Icelandair

Sat, 18 Apr - Sun, 26 Apr

20:20 - 21:35

IAD

LHR

20h 15m

2 stops

19:30 - 17:00

LHR

IAD

26h 30m

1 stop

£450Scandinavian Airlines

Wed, 15 Apr - Wed, 22 Apr

20:20 - 18:30

IAD

LHR

17h 10m

1 stop

07:05 - 17:00

LHR

IAD

14h 55m

2 stops

£452Scandinavian Airlines

Mon, 20 Apr - Mon, 4 May

20:20 - 17:40

IAD

LHR

16h 20m

1 stop

07:05 - 17:00

LHR

IAD

14h 55m

2 stops

£453Scandinavian Airlines

Wed, 9 Sep - Wed, 23 Sep

20:30 - 20:20

IAD

LHR

18h 50m

1 stop

13:05 - 19:20

LHR

IAD

11h 15m

1 stop

£453Icelandair

Mon, 6 Apr - Wed, 15 Apr

12:55 - 06:30

DCA

LHR

12h 35m

1 stop

09:30 - 15:30

LHR

DCA

11h 00m

1 stop

£531Air Canada

Mon, 30 Mar - Tue, 7 Apr

12:55 - 06:30

DCA

LHR

12h 35m

1 stop

14:05 - 21:55

LHR

DCA

12h 50m

1 stop

£532Air Canada

Mon, 6 Apr - Wed, 15 Apr

12:55 - 06:30

DCA

LHR

12h 35m

1 stop

14:10 - 12:01

LHR

DCA

26h 51m

1 stop

£532Air Canada

Useful Info

Low season	January
High season	July
Cheapest flight	£249

Best time to beat the crowds (12% less expensive on average)

Most popular time to fly (8% 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

Northampton

Swindon

Slough

Winchester

Croydon

Stansted

Folkestone

Poole

Chichester

Maidstone

Colchester

Salisbury

Chelmsford

Crawley

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London Heathrow Airport (LHR)

£249 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

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Cabin class types available on flights to Heathrow

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

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Flights from domestic origins to District of Columbia

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