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

Delta, United Airlines, and Scandinavian Airlines can get you from State of Washington to London in just under 16h 15m. Your travel time can differ by up to 3h 45m. 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 £1,113 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 £417.

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.

£178+ 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 11 September 2026.

Wed 14/1019:00 -

1 stop17h 20m

Tue 20/1013:05 -

1 stop12h 50m

Deal found 8/9£556

Sun 20/915:55 -

2 stops19h 20m

Fri 2/1019:55 -

2 stops25h 50m

Deal found 7/9£559

Sun 27/919:00 -

3 stops35h 55m

Tue 6/1011:00 -

2 stops17h 40m

Deal found 6/9£559

Mon 19/1015:40 -

2 stops22h 05m

Tue 27/1006:20 -

2 stops18h 40m

Deal found 7/9£560

Sun 4/1015:55 -

2 stops17h 05m

Fri 9/1006:40 -

2 stops15h 05m

Deal found 7/9£560

Mon 16/1114:30 -

1 stop14h 20m

Tue 24/1120:35 -

1 stop28h 25m

Deal found 6/9£561

Fri 6/1114:35 -

3 stops34h 00m

Wed 25/1119:30 -

2 stops29h 30m

Deal found 8/9£562

Wed 14/1015:40 -

2 stops21h 35m

Thu 22/1009:25 -

2 stops16h 30m

Deal found 7/9£562

Tue 29/915:55 -

1 stop17h 45m

Tue 6/1006:40 -

1 stop15h 05m

Deal found 6/9£562

Sun 18/1010:30 -

1 stop17h 35m

Mon 2/1120:35 -

1 stop28h 25m

Deal found 8/9£562

Thu 1/1018:50 -

2 stops21h 40m

Thu 8/1007:20 -

2 stops21h 44m

Deal found 6/9£563

Tue 6/1019:00 -

1 stop11h 40m

Tue 13/1015:40 -

1 stop34h 15m

Deal found 6/9£563

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 11 September 2026.

Sun 3/114:35 -

1 stop16h 30m

Sun 10/106:00 -

1 stop19h 00m

Deal found 8/9£571

Wed 24/214:20 -

1 stop18h 15m

Sun 7/313:45 -

1 stop29h 50m

Deal found 9/9£616

Mon 16/1112:31 -

2 stops21h 09m

Tue 24/1106:40 -

2 stops23h 24m

Deal found 6/9£624

Sat 21/1112:20 -

2 stops37h 20m

Sun 29/1114:30 -

1 stop32h 07m

Deal found 10/9£632

Tue 27/1020:05 -

1 stop30h 50m

Tue 17/1117:20 -

1 stop31h 50m

Deal found 7/9£650

Sun 27/917:45 -

1 stop14h 55m

Tue 13/1009:20 -

1 stop15h 15m

Deal found 10/9£652

Tue 29/921:50 -

Nonstop9h 45m

Thu 1/1009:55 -

1 stop14h 40m

Deal found 9/9£678

Mon 1/213:39 -

2 stops19h 26m

Mon 15/219:05 -

2 stops36h 02m

Deal found 7/9£684

Thu 21/106:25 -

1 stop21h 55m

Mon 25/114:45 -

1 stop13h 05m

Deal found 6/9£723

Thu 1/1015:30 -

1 stop15h 10m

Tue 6/1015:40 -

1 stop34h 15m

Deal found 10/9£771

Wed 16/1218:45 -

Nonstop9h 25m

Thu 24/1214:55 -

Nonstop9h 55m

Deal found 10/9£808

Sun 11/1007:15 -

2 stops25h 10m

Mon 19/1017:25 -

2 stops58h 44m

Deal found 10/9£1,043

Sun 25/1019:10 -

2 stops19h 20m

Sat 31/1006:00 -

2 stops19h 00m

Deal found 7/9£586

Wed 11/1119:05 -

1 stop37h 15m

Wed 18/1110:55 -

1 stop38h 15m

Deal found 10/9£650

Wed 16/1207:45 -

1 stop14h 45m

Wed 30/1211:10 -

1 stop17h 49m

Deal found 10/9£654

Fri 11/1210:39 -

2 stops23h 51m

Mon 21/1219:30 -

2 stops34h 12m

Deal found 10/9£658

Wed 11/1114:35 -

1 stop19h 50m

Wed 18/1107:45 -

2 stops20h 33m

Deal found 10/9£659

Fri 30/1015:35 -

2 stops19h 45m

Mon 9/1106:10 -

2 stops18h 50m

Deal found 6/9£607

Wed 4/1110:47 -

2 stops18h 03m

Wed 11/1109:15 -

2 stops19h 47m

Deal found 10/9£695

Wed 7/1013:45 -

1 stop11h 45m

Tue 20/1010:00 -

1 stop14h 35m

Deal found 10/9£707

Wed 28/1020:05 -

1 stop30h 50m

Tue 3/1117:20 -

1 stop32h 50m

Deal found 10/9£650

Sat 6/308:46 -

3 stops38h 24m

Wed 10/313:00 -

2 stops30h 53m

Deal found 10/9£672

Sun 24/107:50 -

2 stops23h 55m

Sun 31/110:00 -

1 stop13h 13m

Deal found 6/9£686

Wed 11/1115:40 -

2 stops17h 25m

Sun 15/1119:05 -

2 stops35h 22m

Deal found 10/9£699

Fri 9/1015:55 -

2 stops18h 35m

Fri 16/1006:40 -

2 stops25h 12m

Deal found 9/9£715

Thu 12/1119:05 -

1 stop37h 25m

Tue 17/1106:30 -

1 stop18h 40m

Deal found 7/9£656

Mon 5/1018:10 -

2 stops22h 20m

Mon 12/1011:40 -

2 stops36h 00m

Deal found 8/9£662

Thu 29/1017:45 -

Nonstop9h 55m

Sat 7/1106:30 -

1 stop13h 17m

Deal found 8/9£740

Tue 22/915:00 -

1 stop16h 05m

Sun 11/1017:00 -

1 stop14h 02m

Deal found 8/9£821

Fri 11/1221:34 -

2 stops29h 21m

Tue 22/1211:55 -

1 stop13h 05m

Deal found 10/9£830

Find flight deals from Washington to London

Round-trip from	£556
One-way from	£178
Popular in	June
Cheapest in	January
Average price	£671
Good round-trip deal	£662 or less
Good one-way deal	£277 or less

Icelandair
14/10-20/10
2 total stops
30h 10m 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. 18% potential increase in price (£107 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 - STN London Stansted

PDXSTN

Portland

Mon 19/10

15:30-16:50

2 stops17h 20m

London Stansted

Wed 31/12

00:00-15:00

Nonstop0h 00m

£182

PortlandLondon

PDX Portland - LTN London Luton

PDXLTN

Portland

Thu 1/10

15:30-12:40

3 stops37h 10m

London Luton

Wed 31/12

00:00-15:00

Nonstop0h 00m

£200

PortlandLondon

PDX Portland - LGW London Gatwick

PDXLGW

Portland

Mon 19/10

15:30-08:20

3 stops32h 50m

London Gatwick

Wed 31/12

00:00-15:00

Nonstop0h 00m

£204

PortlandLondon

PDX Portland - STN London Stansted

PDXSTN

Portland

Mon 12/10

15:30-19:50

3 stops20h 20m

London Stansted

Wed 31/12

00:00-15:00

Nonstop0h 00m

£237

PortlandLondon

PDX Portland - LGW London Gatwick

PDXLGW

Portland

Mon 1/3

14:45-10:55

1 stop12h 10m

London Gatwick

Wed 31/12

00:00-15:00

Nonstop0h 00m

£239

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Mon 7/12

10:10-11:50

1 stop17h 40m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£240

PortlandLondon

PDX Portland - LHR London Heathrow

PDXLHR

Portland

Sat 10/10

15:30-11:55

1 stop12h 25m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£240

SeattleLondon

SEA Seattle/Tacoma Intl - STN London Stansted

SEASTN

Seattle/Tacoma Intl

Sun 15/11

14:35-22:00

2 stops23h 25m

London Stansted

Wed 31/12

00:00-15:00

Nonstop0h 00m

£242

PortlandLondon

PDX Portland - LHR London Heathrow

PDXLHR

Portland

Sun 6/12

13:50-12:20

1 stop14h 30m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£243

PortlandLondon

PDX Portland - LHR London Heathrow

PDXLHR

Portland

Sun 8/11

08:08-12:20

1 stop20h 12m

London Heathrow

Wed 31/12

00:00-15:00

Nonstop0h 00m

£243

Flights are sorted by cheapest return flights first.

Deals found on 9/9

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-LGW

SEA-LTN

SEA-STN

PDX-STN

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-LGW

SEA-LTN

SEA-STN

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 £899). 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 Tuesday (25 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (24 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 £537 and £758 in October.
The cheapest return price found within the last 5 days was £556 on Icelandair (14 Oct–20 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?
Delta, United Airlines, and Scandinavian Airlines can get you from State of Washington to London in just under 16h 15m. Your travel time can differ by up to 3h 45m. 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 £1,113 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 £417.
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 £899). 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£651	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Alaska Airlines	Cheapest£487	Average£708	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
Virgin Atlantic	Cheapest£502	Average£619	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.

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

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.

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

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 £178

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 11 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 11 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 11 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 11 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 11 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 11 September 2026.

Last-minute flights from Washington to LondonDiscover last-minute flight deals from Washington to London. Data last updated 11 September 2026 and is based on user searches.

Discover last-minute flight deals from Washington to London. Data last updated 11 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 11 September 2026.

Search for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated 11 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 11 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 11 September 2026.

The most flights from USWA to LON are scheduled on a Tuesday (25 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (24 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 £537 and £758 in October.The cheapest return price found within the last 5 days was £556 on Icelandair (14 Oct–20 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 11 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 11 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 11 September 2026.

Last-minute flights from Washington to London
Discover last-minute flight deals from Washington to London. Data last updated 11 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 11 September 2026.

State of Washington to London flights typically cost between £537 and £758 in October.
The cheapest return price found within the last 5 days was £556 on Icelandair (14 Oct–20 Oct).