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Cheap flights from Washington to London Heathrow Airport from £195

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LHR
28 Jun — 5 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Washington to Heathrow
Explore the most affordable flight options available from Washington to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 May 2026.

Wed 23/913:37
GEG
-
LHR
1 stop14h 58m
Lufthansa
Wed 14/1006:55
LHR
-
GEG
2 stops23h 21m
Lufthansa
Deal found 26/5£642
Wed 9/913:37
GEG
-
LHR
1 stop14h 58m
Lufthansa
Wed 7/1007:30
LHR
-
GEG
2 stops22h 46m
Lufthansa
Deal found 26/5£646
Wed 9/905:00
GEG
-
LHR
1 stop23h 35m
United Airlines
Wed 7/1008:40
LHR
-
GEG
2 stops21h 36m
United Airlines
Deal found 28/5£647
Tue 13/1012:50
GEG
-
LHR
1 stop14h 20m
Lufthansa
Thu 22/1007:30
LHR
-
GEG
2 stops21h 23m
Lufthansa
Deal found 26/5£651
Wed 14/1012:45
GEG
-
LHR
1 stop16h 05m
Iberia
Wed 28/1019:05
LHR
-
GEG
2 stops23h 53m
Iberia
Deal found 27/5£651
Sun 20/913:00
GEG
-
LHR
2 stops24h 40m
Scandinavian Airlines
Mon 28/919:30
LHR
-
GEG
2 stops29h 30m
Scandinavian Airlines
Deal found 28/5£652
Tue 8/913:00
GEG
-
LHR
2 stops20h 40m
Scandinavian Airlines
Mon 14/919:30
LHR
-
GEG
2 stops29h 30m
Scandinavian Airlines
Deal found 27/5£653
Mon 5/1012:28
PSC
-
LHR
1 stop13h 32m
KLM
Tue 13/1006:30
LHR
-
PSC
2 stops17h 48m
KLM
Deal found 28/5£654
Wed 14/1015:05
GEG
-
LHR
1 stop16h 30m
Delta
Wed 21/1006:30
LHR
-
GEG
2 stops16h 15m
Delta
Deal found 26/5£654
Mon 5/1006:00
PSC
-
LHR
2 stops20h 20m
Delta
Tue 13/1006:30
LHR
-
PSC
2 stops21h 22m
Delta
Deal found 26/5£657
Sun 19/718:50
SEA
-
LHR
1 stop17h 55m
Lufthansa
Tue 21/720:25
LHR
-
SEA
2 stops23h 30m
Lufthansa
Deal found 27/5£666
Mon 5/1013:55
PSC
-
LHR
1 stop15h 50m
Multiple Airlines
Tue 13/1009:50
LHR
-
PSC
1 stop15h 33m
Multiple Airlines
Deal found 25/5£667

Find flight deals from Washington to Heathrow

Keep the following information in mind while searching for Washington to Heathrow flight deals. Data was last updated 29 May 2026.

Round-trip from

£642

One-way from

£195

Popular in

June

Cheapest in

January

Average price

£679

Good round-trip deal

£732 or less

Good one-way deal

£464 or less
Lufthansa
  • Lufthansa
  • 23/9-14/10
  • 3 total stops
  • 37h 49m total
  • Washington to London
Search Deals
23/11
  • 23/11
  • 2 total stops
  • 17h 40m total
  • Washington to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£112 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Washington to London Heathrow.
Search Deals
Price to beat on a one-way flight from Washington to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 May 2026.
Use the filters below to find and compare flights from Washington to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PascoLondon

PSC - LHR

PSCLHR

Pasco Tri Cities

Mon 7/9

06:00-07:15

2 stops17h 15m

London Heathrow

Tue 22/9

06:30-14:44

2 stops16h 14m

£657

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Sat 3/10

11:30-21:20

2 stops25h 50m

London Heathrow

Tue 27/10

06:35-23:38

2 stops24h 03m

£657

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Fri 25/9

13:00-16:00

2 stops19h 00m

London Heathrow

Tue 6/10

07:05-18:48

3 stops19h 43m

£659

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 9/9

14:33-15:05

1 stop16h 32m

London Heathrow

Wed 7/10

17:00-23:54

1 stop14h 54m

£661

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Sun 11/10

05:00-06:30

2 stops17h 30m

London Heathrow

Thu 22/10

07:30-20:53

2 stops21h 23m

£664

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 18/8

18:20-12:10

Nonstop9h 50m

London Heathrow

Wed 30/9

06:30-11:47

1 stop13h 17m

£671

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 1/9

13:01-15:35

1 stop18h 34m

London Heathrow

Tue 29/9

12:25-23:04

1 stop18h 39m

£675
Fastest return journey

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Fri 11/9

21:45-15:05

Nonstop9h 20m

London Heathrow

Wed 30/9

17:00-18:55

Nonstop9h 55m

£680

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sat 5/9

21:45-15:05

Nonstop9h 20m

London Heathrow

Wed 30/9

17:00-18:55

Nonstop9h 55m

£680

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 6/9

21:45-15:05

Nonstop9h 20m

London Heathrow

Mon 2/11

14:45-16:50

Nonstop10h 05m

£681

Flights are sorted by cheapest return flights first.

Deals found on 24/5

Showing 1-10 of 56 resultsSorted by cheapest first
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Best time to book a flight from Washington to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Washington with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to London Heathrow Airport

What is the cheapest month to book a flight from State of Washington to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from State of Washington to London Heathrow Airport (average of £238). Flying from State of Washington to London Heathrow Airport in September is currently the most expensive (average of £1,971). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to LHR?

Find hourly flight availability from Washington to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 May 2026.

When flying from State of Washington to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from State of Washington to London Heathrow Airport

Explore weekly flight availability from Washington to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 29 May 2026.

The most flights from USWA to LHR are scheduled on a Wednesday (23 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (13 on average).

How much does it cost for a return flight from State of Washington to London Heathrow Airport?

How far ahead should I book a flight from State of Washington to London Heathrow Airport?

The price you pay for your flight from State of Washington to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 64 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

Find useful and relevant information for your journey from Washington to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from State of Washington to London Heathrow Airport?

    Airlines like United Airlines, Delta, and KLM fly from State of Washington to London Heathrow Airport in about 9h 50m. The time it takes to get you to your destination can typically vary by up to 8h 25m. State of Washington and London Heathrow Airport are separated by a distance of 4783 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from State of Washington to London Heathrow Airport?

    When deciding which route to take from State of Washington to London Heathrow Airport consider Seattle/Tacoma Intl - London Heathrow, Portland - London Heathrow or Spokane - London Heathrow as they are the most popular.

  • What are the most reliable airlines from State of Washington to London Heathrow Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from State of Washington to London Heathrow Airport on time: KLM (96%), Air France (96%), Delta (95%).

  • What are the cheapest flights from State of Washington to London Heathrow Airport?

    The cheapest flight price from State of Washington to London Heathrow Airport is £259. On average you can expect to pay £700. The most popular route, (Seattle/Tacoma Intl - London Heathrow), can usually be booked for £496.

  • Can I find deals for flights from Washington to Heathrow that include hotel bookings?

    Yes. In addition to deals on Washington to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Washington to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Heathrow.

  • Can I find deals for business class flights from Washington to Heathrow?

    Yes. Cheapflights offers flight deals from Washington to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to London Heathrow Airport (average of £238). Flying from State of Washington to London Heathrow Airport in September is currently the most expensive (average of £1,971). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Northampton
Wembley
Luton
Gatwick
Croydon
Ilford
Slough
Hayes
Brentford
Colchester
Kingston upon Thames
Eastbourne
Ipswich
Watford
Swindon
Romford
Guildford
Borehamwood

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Newark to London City flights
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Boston to London City flights
Philadelphia to Heathrow flights
Boston to Stansted flights
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Los Angeles to Gatwick flights
Denver to Heathrow flights
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Los Angeles to Stansted flights
Baltimore to Gatwick flights
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San Francisco to Gatwick flights
Los Angeles to London City flights
Orlando to Gatwick flights
O'Hare Intl to Stansted flights
San Francisco to Stansted flights
O'Hare Intl to Gatwick flights
Seattle to Gatwick flights
San Francisco to London City flights
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Top 2 airlines flying from Washington to Heathrow

Discover the top 2 airlines that operate flights from Washington to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 May 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£353Average£519FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£367Average£584FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Washington to Heathrow?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Washington to Heathrow?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Washington.

Can Cheapflights find flights from Washington to Heathrow with no change fees?

Need flexible booking options for your flight to Heathrow from Washington? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Washington to Heathrow become cheaper?

Of course! You can now track prices for flights from Washington to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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