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

Airlines like Scandinavian Airlines, Alaska Airlines, and Delta fly from State of Washington to London Heathrow Airport in about 11h 53m. The time it takes to get you to your destination can typically vary by up to 10h 56m. State of Washington and London Heathrow Airport are separated by a distance of 4763 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines to fly from State of Washington to London Heathrow Airport one-way?

One-way options have recently been found by users for as low as £126 on Icelandair. Other airlines that offer cheap prices include Virgin Atlantic from £215 and British Airways from £240 one-way.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 cheapest flights from State of Washington to London Heathrow Airport?

The cheapest flight price from State of Washington to London Heathrow Airport is £239. On average you can expect to pay £519. The most popular route, (Seattle/Tacoma Intl - London Heathrow), can usually be booked for £397.

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: SAUDIA (97%), Scandinavian Airlines (90%), KLM (88%).

What are the most popular airlines that fly from State of Washington to London Heathrow Airport?

Virgin Atlantic, British Airways and Alaska Airlines are the most popular airlines when flying from State of Washington to London Heathrow Airport.

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.

£203+ Cheap Flights from Washington to London Heathrow Airport

Cheap flight deals from Washington to Heathrow

Enter your travel dates to find the best prices.

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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 August 2026.

Fri 2/1015:55 -

2 stops16h 30m

Fri 9/1017:10 -

3 stops28h 35m

Deal found 24/8£483

Sun 4/1015:55 -

1 stop18h 35m

Sun 11/1006:40 -

2 stops15h 05m

Deal found 24/8£505

Tue 6/1015:55 -

1 stop16h 05m

Tue 13/1006:40 -

2 stops21h 24m

Deal found 24/8£521

Fri 25/915:55 -

1 stop16h 05m

Mon 5/1017:30 -

2 stops28h 15m

Deal found 24/8£535

Tue 22/915:55 -

1 stop17h 45m

Sat 10/1006:40 -

2 stops15h 05m

Deal found 24/8£537

Sun 11/1015:55 -

1 stop18h 35m

Mon 19/1007:05 -

2 stops23h 59m

Deal found 24/8£538

Tue 13/1019:00 -

2 stops18h 35m

Mon 19/1007:05 -

2 stops18h 50m

Deal found 24/8£539

Wed 21/1015:40 -

2 stops22h 00m

Mon 26/1020:35 -

1 stop28h 25m

Deal found 24/8£541

Mon 19/1015:40 -

1 stop12h 15m

Wed 4/1112:15 -

1 stop12h 45m

Deal found 25/8£542

Tue 1/1206:00 -

1 stop20h 00m

Wed 9/1217:25 -

2 stops26h 36m

Deal found 26/8£626

Wed 9/1216:27 -

1 stop11h 53m

Fri 11/1214:45 -

1 stop26h 20m

Deal found 28/8£649

Wed 9/1205:15 -

1 stop20h 25m

Fri 11/1215:00 -

2 stops38h 14m

Deal found 27/8£658

Best flights from Washington to Heathrow
Discover carefully curated flight deals from Washington to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.

Wed 21/1010:51 -

2 stops22h 49m

Sat 31/1006:40 -

2 stops20h 24m

Deal found 24/8£624

Wed 9/1216:27 -

1 stop11h 53m

Fri 11/1214:45 -

1 stop26h 20m

Deal found 28/8£649

Mon 11/110:05 -

2 stops16h 25m

Fri 15/106:30 -

2 stops20h 18m

Deal found 28/8£657

Wed 9/1205:15 -

2 stops17h 55m

Fri 11/1215:00 -

2 stops38h 14m

Deal found 28/8£660

Mon 5/1015:25 -

1 stop11h 55m

Mon 12/1006:30 -

2 stops21h 05m

Deal found 29/8£705

Sun 11/1021:50 -

Nonstop9h 45m

Mon 26/1012:20 -

Nonstop10h 34m

Deal found 26/8£724

Tue 29/908:30 -

2 stops40h 05m

Sun 4/1020:05 -

2 stops31h 06m

Deal found 28/8£741

Wed 20/107:20 -

2 stops24h 40m

Wed 27/118:40 -

2 stops35h 40m

Deal found 28/8£624

Tue 2/208:46 -

2 stops18h 04m

Tue 9/206:35 -

2 stops19h 03m

Deal found 26/8£663

Wed 18/1116:25 -

1 stop16h 05m

Wed 25/1108:40 -

2 stops19h 29m

Deal found 27/8£669

Wed 18/1107:23 -

1 stop20h 57m

Wed 25/1114:45 -

1 stop14h 19m

Deal found 28/8£691

Sun 17/107:20 -

2 stops24h 40m

Fri 29/110:20 -

2 stops20h 00m

Deal found 28/8£635

Sun 11/1015:30 -

1 stop16h 05m

Sun 18/1018:30 -

1 stop13h 29m

Deal found 29/8£726

Tue 13/1013:00 -

1 stop16h 15m

Fri 23/1011:45 -

2 stops20h 05m

Deal found 26/8£669

Sat 3/1013:05 -

1 stop34h 20m

Tue 27/1013:00 -

2 stops30h 29m

Deal found 24/8£680

Sat 16/118:55 -

Nonstop9h 25m

Sat 30/114:45 -

Nonstop10h 05m

Deal found 28/8£712

Thu 10/908:59 -

2 stops23h 01m

Tue 6/1006:40 -

1 stop15h 05m

Deal found 24/8£650

Fri 9/1014:17 -

1 stop15h 28m

Fri 16/1009:50 -

1 stop22h 03m

Deal found 24/8£801

Tue 27/1011:18 -

2 stops17h 22m

Wed 4/1106:30 -

2 stops18h 28m

Deal found 25/8£673

Mon 12/1013:35 -

1 stop16h 35m

Mon 19/1017:40 -

2 stops35h 00m

Deal found 28/8£716

Thu 8/1021:40 -

Nonstop9h 25m

Wed 21/1017:00 -

Nonstop10h 00m

Deal found 26/8£724

Sat 28/1112:31 -

2 stops21h 59m

Fri 11/1206:40 -

2 stops25h 21m

Deal found 28/8£676

Mon 30/1111:32 -

2 stops18h 13m

Mon 7/1206:30 -

2 stops18h 49m

Deal found 28/8£696

Wed 7/1019:18 -

1 stop11h 47m

Wed 14/1013:05 -

2 stops37h 33m

Deal found 24/8£851

Fri 9/1013:35 -

1 stop13h 35m

Fri 16/1017:40 -

2 stops35h 00m

Deal found 25/8£717

Wed 13/107:01 -

1 stop21h 19m

Sun 17/114:45 -

1 stop14h 16m

Deal found 24/8£759

Wed 2/1211:32 -

2 stops18h 13m

Sun 20/1208:55 -

2 stops18h 01m

Deal found 27/8£702

Sat 17/1019:15 -

1 stop34h 05m

Sat 24/1007:30 -

2 stops18h 07m

Deal found 27/8£719

Sun 4/1021:50 -

Nonstop9h 45m

Sat 10/1006:30 -

1 stop13h 22m

Deal found 27/8£703

Sat 16/107:00 -

3 stops23h 35m

Fri 29/106:40 -

2 stops23h 46m

Deal found 28/8£779

Find flight deals from Washington to Heathrow

Round-trip from	£483
One-way from	£203
Popular in	June
Cheapest in	January
Average price	£652
Good round-trip deal	£666 or less
Good one-way deal	£265 or less

2/10-9/10
5 total stops
45h 05m total
Washington to London

Search Deals

12/10
2 total stops
22h 10m total
Washington to London

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (£111 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Price to beat on a round-trip flight from Washington to London Heathrow.

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Price to beat on a one-way flight from Washington to London Heathrow.

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Cheapflights Fare Finder

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

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Wed 21/10

10:51-17:40

2 stops22h 49m

London Heathrow

Sat 31/10

06:40-20:04

2 stops20h 24m

£624

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Wed 20/1

07:20-16:00

2 stops24h 40m

London Heathrow

Wed 27/1

18:40-22:20

2 stops35h 40m

£624

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Sun 17/1

07:20-16:00

2 stops24h 40m

London Heathrow

Fri 29/1

10:20-22:20

2 stops20h 00m

£635

PascoLondon

PSC Pasco Tri Cities - LHR London Heathrow

PSCLHR

Pasco Tri Cities

Wed 9/12

16:27-12:20

1 stop11h 53m

London Heathrow

Fri 11/12

14:45-09:05

1 stop26h 20m

£649

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Thu 10/9

08:59-16:00

2 stops23h 01m

London Heathrow

Tue 6/10

06:40-13:45

1 stop15h 05m

£650

SpokaneLondon

GEG Spokane - LHR London Heathrow

GEGLHR

Spokane

Mon 11/1

10:05-10:30

2 stops16h 25m

London Heathrow

Fri 15/1

06:30-18:48

2 stops20h 18m

£657

PascoLondon

PSC Pasco Tri Cities - LHR London Heathrow

PSCLHR

Pasco Tri Cities

Wed 9/12

05:15-07:10

2 stops17h 55m

London Heathrow

Fri 11/12

15:00-21:14

2 stops38h 14m

£660

PortlandLondon

PDX Portland - LHR London Heathrow

PDXLHR

Portland

Tue 2/2

08:46-10:50

2 stops18h 04m

London Heathrow

Tue 9/2

06:35-17:38

2 stops19h 03m

£663

SpokaneLondon

GEG Spokane - LHR London Heathrow

GEGLHR

Spokane

Wed 18/11

16:25-16:30

1 stop16h 05m

London Heathrow

Wed 25/11

08:40-20:09

2 stops19h 29m

£669

SpokaneLondon

GEG Spokane - LHR London Heathrow

GEGLHR

Spokane

Tue 13/10

13:00-13:15

1 stop16h 15m

London Heathrow

Fri 23/10

11:45-23:50

2 stops20h 05m

£669

Flights are sorted by cheapest return flights first.

Deals found on 24/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

SEA-LHR

PSC-LHR

GEG-LHR

PDX-LHR

BLI-LHR

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

USWA-LHR

SEA-LHR

PSC-LHR

GEG-LHR

PDX-LHR

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 £486). Flying from State of Washington to London Heathrow Airport in June is currently the most expensive (average of £921). 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?

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

The most flights from USWA to LHR are scheduled on a Friday (25 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (14 on average).

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

Airfare is below average for this route at the moment.

State of Washington to London Heathrow Airport flights typically cost between £530 and £752 in October.
The cheapest return price found within the last 5 days was £483 on Multiple Airlines (2 Oct–9 Oct).

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

How long is the flight from State of Washington to London Heathrow Airport?
Airlines like Scandinavian Airlines, Alaska Airlines, and Delta fly from State of Washington to London Heathrow Airport in about 11h 53m. The time it takes to get you to your destination can typically vary by up to 10h 56m. State of Washington and London Heathrow Airport are separated by a distance of 4763 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines to fly from State of Washington to London Heathrow Airport one-way?
One-way options have recently been found by users for as low as £126 on Icelandair. Other airlines that offer cheap prices include Virgin Atlantic from £215 and British Airways from £240 one-way.
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: SAUDIA (97%), Scandinavian Airlines (90%), KLM (88%).
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 £239. On average you can expect to pay £519. The most popular route, (Seattle/Tacoma Intl - London Heathrow), can usually be booked for £397.
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 £486). Flying from State of Washington to London Heathrow Airport in June is currently the most expensive (average of £921). 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.

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Top 3 airlines flying from Washington to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£456	Average£649	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Alaska Airlines	Cheapest£486	Average£724	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
Virgin Atlantic	Cheapest£493	Average£618	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

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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?

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Cheap flights from Washington to London Heathrow Airport from £203

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Washington to Heathrow

Cheapest flights from Washington to HeathrowExplore 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 August 2026.

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 August 2026.

Best flights from Washington to HeathrowDiscover carefully curated flight deals from Washington to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.

Discover carefully curated flight deals from Washington to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.

Direct flights from Washington to HeathrowExplore direct flight options from Washington to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 August 2026.

Explore direct flight options from Washington to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 August 2026.

Last-minute flights from Washington to HeathrowDiscover last-minute flight deals from Washington to Heathrow. Data last updated 29 August 2026 and is based on user searches.

Discover last-minute flight deals from Washington to Heathrow. Data last updated 29 August 2026 and is based on user searches.

One-way flights from Washington to HeathrowSearch for one-way flight options from Washington to Heathrow. Find affordable one-way fares based on user searches. Data last updated 29 August 2026.

Search for one-way flight options from Washington to Heathrow. Find affordable one-way fares based on user searches. Data last updated 29 August 2026.

Find flight deals from Washington to Heathrow

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One-way from

Popular in

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Use the filters below to find and compare flights from Washington to London Heathrow Airport that are best for you.

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.

Cheapflights Insights

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

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 August 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 August 2026.

The most flights from USWA to LHR are scheduled on a Friday (25 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (14 on average).

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

Airfare is below average for this route at the moment.

State of Washington to London Heathrow Airport flights typically cost between £530 and £752 in October.The cheapest return price found within the last 5 days was £483 on Multiple Airlines (2 Oct–9 Oct).

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

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

What are the cheapest airlines to fly from State of Washington to London Heathrow Airport one-way?

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

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

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

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

How can I find direct flights from Washington to Heathrow?

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

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

Travelling to a place near London Heathrow Airport?

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Alternative routes for Washington to Heathrow

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Complete your trip

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Other flights to Heathrow

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

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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 August 2026.

Best flights from Washington to Heathrow
Discover carefully curated flight deals from Washington to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.

Direct flights from Washington to Heathrow
Explore direct flight options from Washington to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 August 2026.

Last-minute flights from Washington to Heathrow
Discover last-minute flight deals from Washington to Heathrow. Data last updated 29 August 2026 and is based on user searches.

One-way flights from Washington to Heathrow
Search for one-way flight options from Washington to Heathrow. Find affordable one-way fares based on user searches. Data last updated 29 August 2026.

State of Washington to London Heathrow Airport flights typically cost between £530 and £752 in October.
The cheapest return price found within the last 5 days was £483 on Multiple Airlines (2 Oct–9 Oct).