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

Scandinavian Airlines, Icelandair, and Condor can get you from State of Washington to London in just under 15h. Your travel time can differ by up to 5h. The distance from State of Washington to London is about 4807 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in London 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 when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, 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?

The most popular route from State of Washington to London is Seattle/Tacoma Intl - London Heathrow. You may also consider Seattle/Tacoma Intl - London Gatwick or Seattle/Tacoma Intl - London Stansted.

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

On average you can expect to pay £555 for a flight from State of Washington to London. The cheapest flight overall is £239 while the most popular route, (Seattle/Tacoma Intl - London Heathrow) is currently priced at £400.

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

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

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

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

How can I find direct flights from Washington to London?

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

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

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

£193+ Cheap Flights from Washington to London

Cheap flight deals from Washington to London

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Washington to London
Explore the most affordable flight options available from Washington to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2026.

Fri 25/915:55 -

1 stop15h 30m

Fri 2/1006:20 -

1 stop15h 25m

Deal found 16/8£477

Tue 6/1015:55 -

1 stop14h 40m

Tue 13/1007:10 -

2 stops20h 54m

Deal found 16/8£478

Fri 2/1015:55 -

1 stop12h 45m

Fri 9/1006:20 -

1 stop15h 25m

Deal found 17/8£480

Sat 3/1015:55 -

1 stop16h 05m

Sat 10/1006:40 -

2 stops15h 05m

Deal found 19/8£480

Sun 4/1015:55 -

1 stop15h 45m

Sat 10/1005:55 -

1 stop15h 50m

Deal found 16/8£481

Sun 27/915:40 -

3 stops33h 30m

Tue 6/1011:00 -

2 stops17h 40m

Deal found 20/8£482

Fri 2/1015:55 -

2 stops18h 35m

Fri 9/1014:45 -

3 stops31h 00m

Deal found 17/8£483

Sun 4/1015:55 -

2 stops19h 20m

Fri 9/1007:05 -

1 stop14h 40m

Deal found 19/8£484

Tue 22/915:55 -

1 stop14h 40m

Wed 30/907:00 -

2 stops24h 20m

Deal found 18/8£485

Sun 4/1015:55 -

1 stop18h 35m

Sat 10/1013:55 -

2 stops31h 50m

Deal found 19/8£485

Sun 1/1114:50 -

3 stops21h 20m

Mon 9/1119:30 -

3 stops30h 52m

Deal found 19/8£485

Fri 2/1015:55 -

1 stop16h 05m

Wed 7/1019:50 -

2 stops49h 55m

Deal found 19/8£485

Best flights from Washington to London
Discover carefully curated flight deals from Washington to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 August 2026.

Tue 6/1018:05 -

2 stops18h 05m

Sun 11/1020:50 -

2 stops27h 20m

Deal found 20/8£530

Sun 27/915:55 -

2 stops20h 00m

Mon 12/1006:40 -

2 stops24h 09m

Deal found 18/8£576

Fri 9/1015:40 -

1 stop15h 00m

Sun 18/1015:40 -

1 stop34h 15m

Deal found 19/8£584

Wed 16/917:40 -

1 stop17h 05m

Wed 23/910:20 -

1 stop13h 20m

Deal found 19/8£619

Tue 20/1017:30 -

Nonstop9h 50m

Tue 10/1111:45 -

1 stop32h 02m

Deal found 19/8£664

Sun 27/913:50 -

1 stop19h 30m

Mon 12/1019:00 -

1 stop24h 52m

Deal found 17/8£688

Sun 14/219:05 -

1 stop37h 15m

Sun 28/210:55 -

1 stop38h 15m

Deal found 18/8£692

Thu 3/1213:16 -

2 stops19h 49m

Thu 10/1209:15 -

2 stops22h 06m

Deal found 20/8£698

Mon 26/1019:26 -

1 stop28h 59m

Thu 5/1114:30 -

1 stop26h 56m

Deal found 16/8£717

Fri 18/913:50 -

1 stop11h 40m

Mon 21/909:20 -

1 stop15h 15m

Deal found 16/8£759

Sun 8/1111:53 -

1 stop16h 27m

Sat 14/1114:45 -

1 stop15h 10m

Deal found 20/8£771

Wed 23/919:10 -

1 stop14h 10m

Wed 30/909:10 -

1 stop16h 00m

Deal found 16/8£848

Sun 27/917:40 -

2 stops18h 15m

Mon 12/1020:35 -

2 stops27h 05m

Deal found 20/8£568

Sun 18/1015:40 -

1 stop12h 15m

Tue 10/1120:35 -

1 stop28h 25m

Deal found 19/8£585

Tue 17/1114:49 -

2 stops19h 41m

Sun 22/1119:30 -

2 stops34h 34m

Deal found 19/8£623

Mon 14/918:10 -

2 stops17h 45m

Mon 21/920:35 -

2 stops27h 05m

Deal found 16/8£588

Mon 7/1214:35 -

1 stop19h 50m

Mon 14/1207:45 -

2 stops22h 19m

Deal found 18/8£694

Sun 1/1106:50 -

1 stop20h 50m

Wed 11/1106:30 -

1 stop12h 50m

Deal found 18/8£706

Thu 15/1012:30 -

2 stops22h 00m

Sun 18/1017:00 -

2 stops35h 04m

Deal found 17/8£644

Tue 15/907:02 -

2 stops17h 23m

Tue 22/909:25 -

2 stops17h 46m

Deal found 16/8£711

Fri 20/1119:05 -

1 stop30h 50m

Sun 29/1110:55 -

1 stop38h 15m

Deal found 18/8£722

Wed 21/1011:33 -

2 stops19h 12m

Sat 7/1110:25 -

1 stop13h 30m

Deal found 19/8£730

Thu 17/918:05 -

2 stops22h 45m

Thu 24/905:40 -

2 stops18h 20m

Deal found 18/8£605

Fri 4/918:10 -

1 stop31h 30m

Mon 7/909:30 -

1 stop34h 25m

Deal found 15/8£751

Thu 28/108:25 -

2 stops17h 05m

Thu 18/220:05 -

1 stop23h 42m

Deal found 18/8£697

Mon 21/915:43 -

2 stops17h 47m

Wed 7/1009:15 -

2 stops17h 51m

Deal found 16/8£726

Fri 2/1017:41 -

1 stop13h 24m

Sat 19/1214:45 -

1 stop16h 13m

Deal found 19/8£808

Fri 27/1106:00 -

2 stops19h 00m

Mon 7/1210:00 -

2 stops19h 56m

Deal found 15/8£735

Tue 1/1210:27 -

1 stop13h 48m

Fri 8/112:15 -

1 stop12h 45m

Deal found 20/8£611

Thu 3/1213:16 -

2 stops36h 39m

Thu 10/1217:20 -

1 stop31h 50m

Deal found 20/8£777

Find flight deals from Washington to London

Round-trip from	£477
One-way from	£193
Popular in	June
Cheapest in	January
Average price	£638
Good round-trip deal	£675 or less
Good one-way deal	£275 or less

25/9-2/10
2 total stops
30h 55m total
Washington to London

Search Deals

29/10
2 total stops
37h 45m total
Washington to London

Search Deals

Highest demand for flights based on searches. 20% potential increase in price (£115 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 August 2026

Search Deals

Price to beat on a round-trip flight from Washington to London (LON).

Search Deals

Price to beat on a one-way flight from Washington to London (LON).

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleLondon

SEA Seattle/Tacoma Intl - LTN London Luton

SEALTN

Seattle/Tacoma Intl

Tue 6/10

18:05-20:10

2 stops18h 05m

London Luton

Sun 11/10

20:50-16:10

2 stops27h 20m

£530

SeattleLondon

SEA Seattle/Tacoma Intl - LTN London Luton

SEALTN

Seattle/Tacoma Intl

Sun 27/9

17:40-19:55

2 stops18h 15m

London Luton

Mon 12/10

20:35-15:40

2 stops27h 05m

£568

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Sun 27/9

15:55-19:55

2 stops20h 00m

London Heathrow

Mon 12/10

06:40-22:49

2 stops24h 09m

£576

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Fri 9/10

15:40-14:40

1 stop15h 00m

London Gatwick

Sun 18/10

15:40-17:55

1 stop34h 15m

£584

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Sun 18/10

15:40-11:55

1 stop12h 15m

London Heathrow

Tue 10/11

20:35-17:00

1 stop28h 25m

£585

SeattleLondon

SEA Seattle/Tacoma Intl - LTN London Luton

SEALTN

Seattle/Tacoma Intl

Mon 14/9

18:10-19:55

2 stops17h 45m

London Luton

Mon 21/9

20:35-15:40

2 stops27h 05m

£588

SeattleLondon

SEA Seattle/Tacoma Intl - LTN London Luton

SEALTN

Seattle/Tacoma Intl

Thu 17/9

18:05-00:50

2 stops22h 45m

London Luton

Thu 24/9

05:40-16:00

2 stops18h 20m

£605

Fastest return journey

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Tue 1/12

10:27-08:15

1 stop13h 48m

London Heathrow

Fri 8/1

12:15-17:00

1 stop12h 45m

£611

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Wed 16/9

17:40-18:45

1 stop17h 05m

London Gatwick

Wed 23/9

10:20-15:40

1 stop13h 20m

£619

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Tue 17/11

14:49-18:30

2 stops19h 41m

London Heathrow

Sun 22/11

19:30-22:04

2 stops34h 34m

£623

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Washington to London

Have a flexible travel schedule? Discover the best time to fly to London from Washington with our price prediction graph.

SEA-STN

SEA-LGW

SEA-LHR

SEA-LTN

SEA-LCY

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

USWA-LON

SEA-STN

SEA-LGW

SEA-LHR

SEA-LTN

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

Currently, January is the cheapest month in which you can book a flight from State of Washington to London (average of £483). Flying from State of Washington to London in June is currently the most expensive (average of £895). 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 LON?

When flying from State of Washington to London, 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

The most flights from USWA to LON are scheduled on a Wednesday (25 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (19 on average).

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

Airfare is below average for this route at the moment.

State of Washington to London flights typically cost between £513 and £729 in September.
The cheapest return price found within the last 5 days was £477 on Multiple Airlines (25 Sept–2 Oct).

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

The best time to book flights from State of Washington to London is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

How long is the flight from State of Washington to London?
Scandinavian Airlines, Icelandair, and Condor can get you from State of Washington to London in just under 15h. Your travel time can differ by up to 5h. The distance from State of Washington to London is about 4807 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?
The most popular route from State of Washington to London is Seattle/Tacoma Intl - London Heathrow. You may also consider Seattle/Tacoma Intl - London Gatwick or Seattle/Tacoma Intl - London Stansted.
What are the most reliable airlines from State of Washington to London?
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 on time: SAUDIA (97%), Scandinavian Airlines (90%), KLM (88%).
What are the cheapest flights from State of Washington to London?
On average you can expect to pay £555 for a flight from State of Washington to London. The cheapest flight overall is £239 while the most popular route, (Seattle/Tacoma Intl - London Heathrow) is currently priced at £400.
Can I find deals for flights from Washington to London that include hotel bookings?
Yes. In addition to deals on Washington to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Washington to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to London.
Can I find deals for business class flights from Washington to London?
Yes. Cheapflights offers flight deals from Washington to London 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?
Currently, January is the cheapest month in which you can book a flight from State of Washington to London (average of £483). Flying from State of Washington to London in June is currently the most expensive (average of £895). 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 London

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£455	Average£674	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Alaska Airlines	Cheapest£486	Average£723	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
Virgin Atlantic	Cheapest£493	Average£617	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

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When you search for this flight from Washington to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Washington today and book when prices fit your budget.

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Cheap flights from Washington to London from £193

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 29/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Washington to London

Cheapest flights from Washington to LondonExplore the most affordable flight options available from Washington to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2026.

Explore the most affordable flight options available from Washington to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2026.

Best flights from Washington to LondonDiscover carefully curated flight deals from Washington to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 August 2026.

Discover carefully curated flight deals from Washington to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 August 2026.

Direct flights from Washington to LondonExplore direct flight options from Washington to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 August 2026.

Explore direct flight options from Washington to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 August 2026.

Last-minute flights from Washington to LondonDiscover last-minute flight deals from Washington to London. Data last updated 20 August 2026 and is based on user searches.

Discover last-minute flight deals from Washington to London. Data last updated 20 August 2026 and is based on user searches.

One-way flights from Washington to LondonSearch for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated 20 August 2026.

Search for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated 20 August 2026.

Find flight deals from Washington to London

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One-way from

Popular in

Cheapest in

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

Best time to book a flight from Washington to London

Have a flexible travel schedule? Discover the best time to fly to London from Washington with our price prediction graph.

Cheapflights Insights

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

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

Find hourly flight availability from Washington to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 August 2026.

When flying from State of Washington to London, 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

Explore weekly flight availability from Washington to London. 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 20 August 2026.

The most flights from USWA to LON are scheduled on a Wednesday (25 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (19 on average).

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

Airfare is below average for this route at the moment.

State of Washington to London flights typically cost between £513 and £729 in September.The cheapest return price found within the last 5 days was £477 on Multiple Airlines (25 Sept–2 Oct).

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

The best time to book flights from State of Washington to London is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

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

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

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

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

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

How can I find direct flights from Washington to London?

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

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

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Cheapest flights from Washington to London
Explore the most affordable flight options available from Washington to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 August 2026.

Best flights from Washington to London
Discover carefully curated flight deals from Washington to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 August 2026.

Direct flights from Washington to London
Explore direct flight options from Washington to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 August 2026.

Last-minute flights from Washington to London
Discover last-minute flight deals from Washington to London. Data last updated 20 August 2026 and is based on user searches.

One-way flights from Washington to London
Search for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated 20 August 2026.

State of Washington to London flights typically cost between £513 and £729 in September.
The cheapest return price found within the last 5 days was £477 on Multiple Airlines (25 Sept–2 Oct).