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

Icelandair, Scandinavian Airlines, and Virgin Atlantic can get you from State of Washington to London in just under 12h 20m. Your travel time can differ by up to 10h 07m. 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 cheapest airlines to fly from State of Washington to London one-way?

To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at £126. Virgin Atlantic flights start at £197 while deals on British Airways start at £241 one-way.

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 £1,119 for a flight from State of Washington to London. The cheapest flight overall is £240 while the most popular route, (Seattle/Tacoma Intl - London Heathrow) is currently priced at £418.

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: Scandinavian Airlines (95%), SAUDIA (95%), KLM (92%).

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

Before booking your flight from State of Washington to London check out the most popular airlines for this route: Virgin Atlantic, British Airways or Alaska Airlines.

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.

£181+ 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 5 September 2026.

Fri 25/915:55 -

2 stops33h 00m

Wed 7/1018:05 -

2 stops51h 40m

Deal found 2/9£546

Tue 22/915:55 -

1 stop17h 45m

Sat 10/1013:55 -

2 stops31h 50m

Deal found 1/9£547

Fri 9/1010:50 -

3 stops25h 40m

Sun 18/1018:55 -

3 stops31h 37m

Deal found 1/9£549

Tue 20/1019:00 -

2 stops15h 25m

Wed 11/1111:55 -

1 stop13h 05m

Deal found 1/9£549

Fri 25/915:55 -

1 stop13h 40m

Sat 10/1013:55 -

2 stops31h 50m

Deal found 2/9£549

Sat 3/1015:55 -

3 stops33h 15m

Fri 9/1019:55 -

2 stops25h 50m

Deal found 1/9£551

Mon 16/1114:35 -

1 stop12h 15m

Tue 12/112:15 -

1 stop12h 45m

Deal found 1/9£551

Sat 3/1015:55 -

1 stop13h 00m

Mon 5/1016:25 -

3 stops35h 39m

Deal found 1/9£552

Wed 30/915:40 -

2 stops21h 35m

Wed 7/1006:15 -

2 stops19h 40m

Deal found 2/9£552

Sun 27/915:55 -

2 stops20h 00m

Tue 6/1007:05 -

2 stops14h 40m

Deal found 2/9£552

Wed 30/914:30 -

2 stops23h 10m

Sun 4/1007:05 -

1 stop14h 40m

Deal found 30/8£553

Wed 30/1214:35 -

1 stop12h 15m

Wed 13/112:15 -

1 stop12h 45m

Deal found 31/8£553

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 5 September 2026.

Tue 1/1214:35 -

1 stop12h 20m

Sun 13/1211:55 -

1 stop13h 05m

Deal found 1/9£585

Tue 15/1214:35 -

1 stop16h 30m

Thu 31/1206:00 -

1 stop19h 00m

Deal found 3/9£586

Mon 16/1115:13 -

2 stops22h 27m

Mon 11/119:30 -

2 stops34h 34m

Deal found 4/9£625

Mon 14/1216:50 -

Nonstop9h 50m

Thu 24/1206:30 -

1 stop13h 20m

Deal found 2/9£654

Sun 21/214:20 -

1 stop21h 15m

Wed 3/317:50 -

1 stop25h 45m

Deal found 3/9£657

Wed 13/118:55 -

Nonstop9h 25m

Sun 24/114:45 -

Nonstop10h 05m

Deal found 31/8£676

Wed 13/119:05 -

1 stop37h 15m

Sun 24/117:20 -

1 stop31h 50m

Deal found 31/8£696

Mon 14/923:04 -

1 stop23h 51m

Thu 17/906:55 -

1 stop18h 04m

Deal found 31/8£701

Sat 10/1007:00 -

2 stops17h 20m

Wed 14/1009:25 -

2 stops17h 07m

Deal found 2/9£713

Tue 2/306:00 -

1 stop16h 55m

Fri 5/313:35 -

Nonstop10h 15m

Deal found 4/9£839

Thu 17/913:50 -

1 stop11h 40m

Mon 28/909:20 -

1 stop15h 15m

Deal found 31/8£1,011

Wed 2/1214:35 -

1 stop12h 15m

Fri 18/1212:15 -

1 stop12h 45m

Deal found 1/9£586

Wed 14/1019:10 -

1 stop18h 05m

Tue 20/1009:40 -

1 stop15h 30m

Deal found 3/9£597

Wed 13/114:30 -

2 stops23h 10m

Wed 20/118:40 -

2 stops35h 40m

Deal found 3/9£625

Mon 9/1107:10 -

2 stops18h 20m

Tue 17/1109:20 -

2 stops18h 44m

Deal found 1/9£663

Mon 16/1116:50 -

Nonstop9h 50m

Thu 14/110:00 -

1 stop33h 50m

Deal found 4/9£667

Wed 13/114:35 -

1 stop14h 25m

Wed 20/108:00 -

1 stop17h 00m

Deal found 1/9£628

Thu 3/1219:05 -

1 stop30h 50m

Tue 15/1217:20 -

1 stop31h 50m

Deal found 1/9£702

Thu 12/1115:13 -

2 stops18h 27m

Tue 17/1106:40 -

2 stops21h 33m

Deal found 3/9£647

Sun 4/1007:02 -

2 stops17h 23m

Tue 20/1018:35 -

2 stops32h 36m

Deal found 4/9£713

Mon 25/107:00 -

2 stops18h 30m

Mon 1/220:05 -

2 stops30h 58m

Deal found 4/9£669

Mon 21/913:35 -

2 stops16h 10m

Mon 26/1006:30 -

1 stop12h 50m

Deal found 1/9£675

Fri 30/1015:35 -

1 stop15h 20m

Wed 4/1108:00 -

1 stop17h 00m

Deal found 2/9£640

Wed 28/1011:45 -

2 stops23h 45m

Tue 3/1119:30 -

2 stops32h 34m

Deal found 3/9£647

Mon 28/919:15 -

1 stop30h 40m

Thu 8/1017:35 -

1 stop31h 45m

Deal found 4/9£717

Fri 29/113:16 -

2 stops20h 34m

Sun 7/208:40 -

2 stops21h 59m

Deal found 30/8£729

Wed 4/1109:55 -

1 stop16h 05m

Mon 16/1106:30 -

1 stop12h 50m

Deal found 1/9£671

Mon 30/1111:32 -

2 stops18h 13m

Mon 7/1206:30 -

2 stops20h 28m

Deal found 4/9£682

Fri 2/1021:32 -

1 stop33h 33m

Sat 19/1214:45 -

1 stop16h 13m

Deal found 3/9£853

Wed 16/1214:35 -

1 stop14h 25m

Thu 31/1206:00 -

1 stop19h 00m

Deal found 3/9£644

Find flight deals from Washington to London

Round-trip from	£546
One-way from	£181
Popular in	June
Cheapest in	January
Average price	£656
Good round-trip deal	£668 or less
Good one-way deal	£266 or less

Scandinavian Airlines
25/9-7/10
4 total stops
84h 40m total
Washington to London

Search Deals

1/10-31/12
2 total stops
25h 00m total
Washington to London

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (£110 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 September 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

PortlandLondon

PDX Portland - LGW London Gatwick

PDXLGW

Portland

Sat 17/10

15:30-07:25

3 stops31h 55m

London Gatwick

Wed 31/12

00:00-15:00

Nonstop0h 00m

£231

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Thu 4/2

14:35-10:55

1 stop12h 20m

London Gatwick

Wed 31/12

00:00-15:00

Nonstop0h 00m

£240

PortlandLondon

PDX Portland - STN London Stansted

PDXSTN

Portland

Sun 11/10

10:10-21:35

3 stops27h 25m

London Stansted

Wed 31/12

00:00-15:00

Nonstop0h 00m

£240

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Mon 1/3

14:35-10:50

1 stop12h 15m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£240

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Tue 2/3

14:35-10:50

1 stop12h 15m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£240

PortlandLondon

PDX Portland - LHR London Heathrow

PDXLHR

Portland

Mon 1/3

17:45-11:20

Nonstop9h 35m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£240

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Sun 6/12

16:50-10:40

Nonstop9h 50m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£240

PortlandLondon

PDX Portland - LHR London Heathrow

PDXLHR

Portland

Sun 11/10

19:30-13:00

Nonstop9h 30m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£240

PortlandLondon

PDX Portland - LHR London Heathrow

PDXLHR

Portland

Sun 28/2

17:45-11:20

Nonstop9h 35m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£240

PortlandLondon

PDX Portland - LHR London Heathrow

PDXLHR

Portland

Wed 3/3

17:45-11:20

Nonstop9h 35m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£240

Flights are sorted by cheapest return flights first.

Deals found on 1/9

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-LHR

SEA-STN

SEA-LGW

SEA-LTN

PDX-LGW

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-LHR

SEA-STN

SEA-LGW

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 £487). Flying from State of Washington to London in June is currently the most expensive (average of £900). 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 typical for this route at the moment.

State of Washington to London flights typically cost between £526 and £752 in September.
The cheapest return price found within the last 5 days was £546 on Scandinavian Airlines (25 Sept–7 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 51 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?
Icelandair, Scandinavian Airlines, and Virgin Atlantic can get you from State of Washington to London in just under 12h 20m. Your travel time can differ by up to 10h 07m. 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 cheapest airlines to fly from State of Washington to London one-way?
To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at £126. Virgin Atlantic flights start at £197 while deals on British Airways start at £241 one-way.
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: Scandinavian Airlines (95%), SAUDIA (95%), KLM (92%).
What are the cheapest flights from State of Washington to London?
On average you can expect to pay £1,119 for a flight from State of Washington to London. The cheapest flight overall is £240 while the most popular route, (Seattle/Tacoma Intl - London Heathrow) is currently priced at £418.
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 £487). Flying from State of Washington to London in June is currently the most expensive (average of £900). 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£457	Average£652	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Alaska Airlines	Cheapest£487	Average£726	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
Virgin Atlantic	Cheapest£495	Average£620	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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Millions of users choose and trust Cheapflights to book the best flight deals from Washington to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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Yes! Cheapflights helps users easily find flights from Washington to London with no change fees.

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

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 £181

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/10. 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 5 September 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 5 September 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 5 September 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 5 September 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 5 September 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 5 September 2026.

Last-minute flights from Washington to LondonDiscover last-minute flight deals from Washington to London. Data last updated 5 September 2026 and is based on user searches.

Discover last-minute flight deals from Washington to London. Data last updated 5 September 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 5 September 2026.

Search for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.

Find flight deals from Washington to London

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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 5 September 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 5 September 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 typical for this route at the moment.

State of Washington to London flights typically cost between £526 and £752 in September.The cheapest return price found within the last 5 days was £546 on Scandinavian Airlines (25 Sept–7 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 51 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 cheapest airlines to fly from State of Washington to London one-way?

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 5 September 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 5 September 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 5 September 2026.

Last-minute flights from Washington to London
Discover last-minute flight deals from Washington to London. Data last updated 5 September 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 5 September 2026.

State of Washington to London flights typically cost between £526 and £752 in September.
The cheapest return price found within the last 5 days was £546 on Scandinavian Airlines (25 Sept–7 Oct).