£161 Find Cheap Flights from District of Columbia to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Heathrow departing on 13/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flight Deals 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.

Recent return flight deals from District of Columbia to Heathrow

KAYAK's recommended return flight deals from the most popular airlines that fly from District of Columbia to Heathrow.
Discover the best prices for you by selecting your travel dates on KAYAK.
Scandinavian Airlines Logo
22:05 - 17:40IAD-LHR
14h 35m1 stop
Scandinavian Airlines Logo
19:30 - 19:59LHR-IAD
29h 29m1 stop
£315Scandinavian Airlines
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Wed, 3 Sep - Sun, 7 Sep
Scandinavian Airlines Logo
22:05 - 21:35IAD-LHR
18h 30m2 stops
Scandinavian Airlines Logo
17:30 - 19:59LHR-IAD
31h 29m2 stops
£320Scandinavian Airlines
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Tue, 23 Sep - Mon, 6 Oct
TAP AIR PORTUGAL Logo
17:00 - 10:20IAD-LHR
12h 20m1 stop
TAP AIR PORTUGAL Logo
06:00 - 15:20LHR-IAD
14h 20m1 stop
£389TAP AIR PORTUGAL
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Fri, 10 Oct - Wed, 22 Oct
Iberia Logo
17:55 - 06:15IAD-LHR
7h 20mdirect
Iberia Logo
06:10 - 15:00LHR-IAD
13h 50m1 stop
£410Iberia
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Mon, 11 Aug - Tue, 26 Aug
Icelandair Logo
20:30 - 20:20IAD-LHR
18h 50m1 stop
Icelandair Logo
13:05 - 19:20LHR-IAD
11h 15m1 stop
£418Icelandair
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Fri, 19 Sep - Fri, 3 Oct
Icelandair Logo
20:30 - 20:20IAD-LHR
18h 50m1 stop
Icelandair Logo
21:25 - 19:20LHR-IAD
26h 55m1 stop
£423Icelandair
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Fri, 10 Oct - Sun, 19 Oct
Iberia Logo
17:55 - 06:15IAD-LHR
7h 20mdirect
Iberia Logo
12:45 - 15:55LHR-IAD
8h 10mdirect
£425Iberia
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Wed, 20 Aug - Wed, 27 Aug
TAP AIR PORTUGAL Logo
22:20 - 17:45IAD-LHR
14h 25m1 stop
TAP AIR PORTUGAL Logo
06:00 - 15:20LHR-IAD
14h 20m1 stop
£433TAP AIR PORTUGAL
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Thu, 25 Sep - Fri, 3 Oct
Delta Logo
17:50 - 06:20IAD-LHR
7h 30mdirect
Delta Logo
06:15 - 16:20LHR-IAD
15h 05m1 stop
£437Delta
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Wed, 24 Sep - Wed, 1 Oct
Delta Logo
19:50 - 13:30IAD-LHR
12h 40m1 stop
Delta Logo
11:30 - 19:15LHR-IAD
12h 45m1 stop
£441Delta
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Wed, 24 Sep - Wed, 1 Oct
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Good to know - Cheap tickets from District of Columbia to London Heathrow Airport

Low season

February

High season

July

Cheapest flight

£161
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly (19% more expensive on average)
Flight from Washington Dulles Airport to London Heathrow Airport

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

Insights shared by verified travellers who flew the route from District of Columbia to Heathrow 
Verified travelerFlew with British AirwaysIAD-LHRApr 2025
Have no basis for comparison, but British Airlines does a good job.
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.
NancyFlew with British AirwaysIAD-LHRNov 2024
Looking at schedules and prices, I settled on BA years ago. I have yet to meet an employee who wasn't at the very least pleasant. Most go out of their way in difficult situations to be kind and cheery.
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.
Verified travelerFlew with British AirwaysIAD-LHRSept 2024
Process to get to connecting flights at Heathrow is convoluted/complicated.
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.
SaraFlew with British AirwaysIAD-LHRJul 2024
British Airways baggage policy was on top. Boarding was well organized and food was pretty good.
Verified travelerFlew with IberiaIAD-LHRAug 2024
British Airways offered an excellent service . Thank you !

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?

    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.

Travelling to a place near Heathrow?

Book flights to Heathrow if you plan to visit one of these locations
Gatwick
Milton Keynes
Eastbourne
Luton
Swindon
Northampton
Southend-on-Sea
Winchester
Croydon
Slough
Stansted
Poole
Chichester
Maidstone
Folkestone
Salisbury
Colchester
Crawley
Chelmsford
Hastings

Everything you need to know for your flight to Heathrow

Information on your arrival and departure airports

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