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

Airlines like United Airlines, Scandinavian Airlines, and Virgin Atlantic fly from State of Washington to London Heathrow Airport in about 9h 45m. The time it takes to get you to your destination can typically vary by up to 27h 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 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 £127 on Icelandair. Other airlines that offer cheap prices include Virgin Atlantic from £200 and British Airways from £243 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 £243. On average you can expect to pay £317. The most popular route, (Seattle/Tacoma Intl - London Heathrow), can usually be booked for £480.

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: Scandinavian Airlines (95%), KLM (94%), SAUDIA (94%).

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

Virgin Atlantic, Alaska Airlines and British Airways 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.

£242+ 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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Direct

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One-way

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 26 October 2026.

Wed 30/1214:35 -

1 stop12h 15m

Sun 10/120:35 -

1 stop28h 25m

Deal found 22/10£556

Mon 23/1114:35 -

3 stops35h 00m

Tue 8/1206:40 -

2 stops18h 20m

Deal found 22/10£557

Sun 15/1114:35 -

1 stop20h 55m

Tue 8/1212:15 -

1 stop12h 45m

Deal found 25/10£557

Mon 16/1114:35 -

2 stops22h 45m

Mon 23/1118:20 -

3 stops30h 40m

Deal found 23/10£558

Mon 7/1214:35 -

1 stop12h 15m

Tue 26/112:15 -

1 stop12h 45m

Deal found 25/10£559

Tue 17/1114:35 -

1 stop12h 15m

Thu 10/1212:15 -

1 stop12h 45m

Deal found 21/10£560

Tue 8/1214:35 -

1 stop12h 15m

Mon 25/120:35 -

1 stop28h 25m

Deal found 25/10£560

Mon 9/1114:35 -

1 stop20h 55m

Sun 13/1220:35 -

1 stop28h 25m

Deal found 21/10£561

Sun 1/1114:35 -

1 stop20h 55m

Wed 11/1112:15 -

1 stop12h 45m

Deal found 22/10£562

Wed 25/1114:35 -

1 stop20h 55m

Fri 4/1220:35 -

1 stop28h 25m

Deal found 21/10£563

Sat 28/1114:35 -

1 stop12h 15m

Wed 9/1212:15 -

1 stop12h 45m

Deal found 22/10£563

Mon 7/1214:35 -

2 stops22h 45m

Mon 14/1220:35 -

1 stop28h 25m

Deal found 23/10£564

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 26 October 2026.

Tue 2/312:30 -

2 stops37h 10m

Fri 5/309:00 -

2 stops19h 59m

Deal found 21/10£572

Wed 14/414:30 -

2 stops19h 10m

Tue 27/407:05 -

2 stops22h 57m

Deal found 22/10£622

Wed 21/421:50 -

Nonstop9h 45m

Tue 27/417:45 -

Nonstop10h 18m

Deal found 25/10£622

Sun 18/415:00 -

Nonstop9h 50m

Fri 30/410:50 -

Nonstop10h 20m

Deal found 22/10£631

Tue 2/309:14 -

1 stop19h 06m

Fri 5/314:45 -

1 stop16h 12m

Deal found 21/10£658

Tue 8/1212:30 -

1 stop14h 45m

Tue 15/1206:35 -

2 stops19h 18m

Deal found 24/10£702

Wed 18/1110:30 -

1 stop17h 40m

Wed 25/1114:55 -

1 stop14h 09m

Deal found 21/10£723

Wed 23/1214:35 -

1 stop20h 55m

Sat 9/120:35 -

1 stop28h 25m

Deal found 22/10£752

Sun 15/1114:07 -

2 stops15h 43m

Fri 27/1106:30 -

2 stops18h 18m

Deal found 24/10£759

Tue 24/1105:06 -

1 stop17h 54m

Tue 1/1209:25 -

1 stop13h 09m

Deal found 24/10£878

Sun 18/412:00 -

2 stops21h 40m

Fri 30/407:05 -

2 stops22h 57m

Deal found 25/10£623

Fri 19/319:40 -

Nonstop9h 40m

Sat 27/314:45 -

Nonstop10h 05m

Deal found 22/10£682

Wed 7/409:50 -

2 stops23h 50m

Tue 20/407:05 -

2 stops22h 57m

Deal found 25/10£623

Fri 20/1123:47 -

1 stop23h 18m

Thu 3/1212:20 -

Nonstop10h 30m

Deal found 21/10£690

Mon 14/1216:50 -

Nonstop9h 50m

Mon 21/1212:20 -

Nonstop10h 30m

Deal found 23/10£708

Mon 11/109:15 -

2 stops19h 45m

Tue 26/107:40 -

2 stops17h 45m

Deal found 22/10£716

Tue 17/1107:00 -

1 stop16h 25m

Tue 24/1109:00 -

2 stops19h 57m

Deal found 24/10£741

Tue 2/315:15 -

1 stop13h 05m

Fri 5/314:45 -

1 stop17h 11m

Deal found 21/10£693

Fri 22/107:20 -

2 stops24h 40m

Sat 6/217:00 -

2 stops39h 09m

Deal found 25/10£631

Wed 18/1116:25 -

1 stop16h 05m

Wed 25/1108:40 -

2 stops19h 29m

Deal found 21/10£723

Tue 24/1105:06 -

2 stops21h 44m

Tue 1/1220:35 -

2 stops35h 18m

Deal found 24/10£865

Tue 24/1105:06 -

1 stop17h 54m

Tue 1/1209:25 -

1 stop22h 28m

Deal found 21/10£866

Mon 16/1116:50 -

Nonstop9h 50m

Wed 9/1212:20 -

Nonstop10h 30m

Deal found 21/10£723

Tue 8/1215:14 -

1 stop13h 06m

Tue 15/1214:45 -

1 stop17h 08m

Deal found 24/10£734

Mon 28/1212:15 -

2 stops22h 15m

Tue 5/118:40 -

2 stops35h 24m

Deal found 24/10£729

Sun 6/1205:00 -

1 stop23h 20m

Sun 13/1214:45 -

1 stop17h 08m

Deal found 22/10£735

Wed 11/1109:33 -

2 stops15h 52m

Wed 18/1106:30 -

2 stops21h 39m

Deal found 22/10£756

Wed 9/1215:14 -

1 stop13h 06m

Wed 16/1214:45 -

1 stop17h 08m

Deal found 25/10£916

Find flight deals from Washington to Heathrow

Round-trip from	£556
One-way from	£244
Popular in	June
Cheapest in	January
Average price	£669
Good one-way deal	£243 or less

Lufthansa
11/4-14/4
3 total stops
53h 23m total
Washington to London

Search Deals

Icelandair
4/12-31/12
1 total stop
20h 55m total
Washington to London

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£94 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

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

Search Deals

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

SpokaneLondon

GEG Spokane - LHR London Heathrow

GEGLHR

Spokane

Sun 18/4

07:02-18:25

2 stops27h 23m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£244

SpokaneLondon

GEG Spokane - LHR London Heathrow

GEGLHR

Spokane

Wed 21/4

13:22-10:30

1 stop13h 08m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£246

SpokaneLondon

GEG Spokane - LHR London Heathrow

GEGLHR

Spokane

Wed 21/4

07:02-10:10

2 stops19h 08m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£250

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Wed 17/2

05:00-10:25

3 stops21h 25m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£250

Fastest return journey

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Sat 27/2

18:40-12:20

Nonstop9h 40m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£260

SpokaneLondon

GEG Spokane - LHR London Heathrow

GEGLHR

Spokane

Mon 30/11

19:29-12:50

3 stops57h 21m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£347

SpokaneLondon

GEG Spokane - LHR London Heathrow

GEGLHR

Spokane

Tue 29/12

19:45-10:50

2 stops31h 05m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£370

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Tue 16/2

05:07-09:10

3 stops20h 03m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£433

SpokaneLondon

GEG Spokane - LHR London Heathrow

GEGLHR

Spokane

Mon 30/11

09:55-10:00

1 stop16h 05m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£436

SpokaneLondon

GEG Spokane - LHR London Heathrow

GEGLHR

Spokane

Wed 30/12

07:45-07:25

1 stop15h 40m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£438

Flights are sorted by cheapest return flights first.

Deals found on 25/10

Showing 1-10 of 47 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.

GEG-LHR

SEA-LHR

ALW-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

GEG-LHR

SEA-LHR

ALW-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 £535). Flying from State of Washington to London Heathrow Airport in June is currently the most expensive (average of £936). 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 Sunday (14 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (8 on average).

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

Airfare is typical for this route at the moment.

State of Washington to London Heathrow Airport flights typically cost between £542 and £798 in April.
The cheapest return price found within the last 5 days was £556 on Lufthansa (11 Apr–14 Apr).

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 United Airlines, Scandinavian Airlines, and Virgin Atlantic fly from State of Washington to London Heathrow Airport in about 9h 45m. The time it takes to get you to your destination can typically vary by up to 27h 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 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 £127 on Icelandair. Other airlines that offer cheap prices include Virgin Atlantic from £200 and British Airways from £243 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: Scandinavian Airlines (95%), KLM (94%), SAUDIA (94%).
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 £243. On average you can expect to pay £317. The most popular route, (Seattle/Tacoma Intl - London Heathrow), can usually be booked for £480.
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 £535). Flying from State of Washington to London Heathrow Airport in June is currently the most expensive (average of £936). 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
Alaska Airlines	Cheapest£493	Average£729	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
British Airways	Cheapest£521	Average£683	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£579	Average£666	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

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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.

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Cheap flights from Washington to London Heathrow Airport from £242

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/4. 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 26 October 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 26 October 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 26 October 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 26 October 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 26 October 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 26 October 2026.

Last-minute flights from Washington to HeathrowDiscover last-minute flight deals from Washington to Heathrow. Data last updated 26 October 2026 and is based on user searches.

Discover last-minute flight deals from Washington to Heathrow. Data last updated 26 October 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 26 October 2026.

Search for one-way flight options from Washington to Heathrow. Find affordable one-way fares based on user searches. Data last updated 26 October 2026.

Find flight deals from Washington to Heathrow

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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 26 October 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 26 October 2026.

The most flights from USWA to LHR are scheduled on a Sunday (14 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (8 on average).

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

Airfare is typical for this route at the moment.

State of Washington to London Heathrow Airport flights typically cost between £542 and £798 in April.The cheapest return price found within the last 5 days was £556 on Lufthansa (11 Apr–14 Apr).

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?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington to Heathrow

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Complete your trip

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Search flights from Washington to Heathrow by cabin class

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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 26 October 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 26 October 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 26 October 2026.

Last-minute flights from Washington to Heathrow
Discover last-minute flight deals from Washington to Heathrow. Data last updated 26 October 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 26 October 2026.

State of Washington to London Heathrow Airport flights typically cost between £542 and £798 in April.
The cheapest return price found within the last 5 days was £556 on Lufthansa (11 Apr–14 Apr).