£206 Find Cheap Flights from Washington 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 2/12. 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.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Washington to Heathrow

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Washington 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.

Recent return flight deals from Washington to Heathrow

Wed, 1 Apr - Wed, 8 Apr
Icelandair Logo
15:45 - 11:55SEA-LHR
12h 10m1 stop
Icelandair Logo
13:05 - 20:45LHR-SEA
15h 40m1 stop
£387Icelandair
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Tue, 4 Nov - Tue, 25 Nov
Icelandair Logo
14:35 - 19:30SEA-LHR
20h 55m1 stop
Icelandair Logo
12:15 - 17:00LHR-SEA
12h 45m1 stop
£390Icelandair
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Mon, 3 Nov - Wed, 19 Nov
Virgin Atlantic Logo
15:19 - 12:50PDX-LHR
13h 31m1 stop
Virgin Atlantic Logo
06:30 - 11:25LHR-PDX
12h 55m1 stop
£405Virgin Atlantic
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Mon, 3 Nov - Wed, 19 Nov
Virgin Atlantic Logo
15:19 - 12:50PDX-LHR
13h 31m1 stop
Virgin Atlantic Logo
06:30 - 11:25LHR-PDX
12h 55m1 stop
£407Virgin Atlantic
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Wed, 3 Dec - Wed, 10 Dec
Lufthansa Logo
15:10 - 13:00SEA-LHR
13h 50m1 stop
Lufthansa Logo
07:40 - 13:20LHR-SEA
13h 40m1 stop
£427Lufthansa
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Wed, 26 Nov - Fri, 5 Dec
Lufthansa Logo
10:05 - 11:50SEA-LHR
17h 45m1 stop
Lufthansa Logo
07:40 - 19:16LHR-SEA
19h 36m2 stops
£430Lufthansa
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Tue, 4 Nov - Fri, 21 Nov
Multiple Airlines Logo
19:00 - 11:50PDX-LHR
32h 50m1 stop
Multiple Airlines Logo
07:40 - 18:30LHR-PDX
18h 50m2 stops
£430Multiple Airlines
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Wed, 14 Jan - Wed, 21 Jan
Iberia Logo
17:45 - 11:20PDX-LHR
9h 35mdirect
Iberia Logo
19:40 - 11:45LHR-PDX
24h 05m2 stops
£431Iberia
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Wed, 14 Jan - Wed, 21 Jan
Iberia Logo
07:40 - 08:15PDX-LHR
16h 35m1 stop
Iberia Logo
19:05 - 11:45LHR-PDX
24h 40m2 stops
£434Iberia
Find Deal
Mon, 3 Nov - Wed, 19 Nov
Multiple Airlines Logo
19:00 - 11:50PDX-LHR
32h 50m1 stop
Multiple Airlines Logo
06:30 - 18:30LHR-PDX
20h 00m2 stops
£434Multiple Airlines
Find Deal

Everything you should know

Cheapest return fare
£387
Overall average: £510
Icelandair
Wed 1/4Wed 8/4
SEA - LHR • 1 stop
Cheapest direct flights
£417
Typical prices: £481-£741
Virgin Atlantic
Tue 11/11Tue 25/11
SEA - 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!
Useful Info

Good to know - Cheap tickets from Washington to London Heathrow Airport

Low seasonFebruary
Cheapest flight£206
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly (10% more expensive on average)
Flight from Portland to London Heathrow Airport

Flights from Washington to Heathrow: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Washington to Heathrow 
Learn how KAYAK collects reviews and tips from users.
Verified travelerFlew with British AirwaysSEA-LHRApr 2025
Make sure you have plenty of time between flights if you are delayed.
Verified travelerFlew with British AirwaysSEA-LHRApr 2024
Bring a sack lunch -- airport food was very expensive.

FAQs for booking Washington to London Heathrow Airport flights

  • How does KAYAK find such low prices on flights from Washington 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 Washington to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington 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 Washington 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 Washington 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 Washington with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington 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 Washington 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
Hounslow
Southend-on-Sea
Northampton
Swindon
Slough
Croydon
Winchester
Stansted
Poole
Folkestone
Chichester
Maidstone
Colchester
Salisbury
Chelmsford
Crawley

Everything you need to know for your flight to Heathrow

Information on your arrival and departure airports

London Heathrow Airport (LHR)

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