How many flights depart from London to State of Washington on average per week?

The number of flights available between London and State of Washington is 102 per week as of November 2025. The most frequent departure day is Mon, with 22% of weekly flights leaving on this day.

What airlines fly to State of Washington?

British Airways, Delta and Virgin Atlantic are the top three most popular airlines that fly to State of Washington from London according to our data. British Airways is the first choice among our users, with 37% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 5 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from London to Washington?

JetBlue, Lufthansa, and Finnair are the most popular carriers operating from London to Washington

How many flights depart from London to State of Washington on average per day?

The number of flights available between London and State of Washington is 14 per day as of November 2025. The most frequent departure time is 12:00PM, with 78% of daily flights leaving in the afternoon.

When did momondo last update prices for flights from London to Washington?

Prices for flights from London to Washington refresh daily.

How many operators does momondo search for flights from London to Washington?

As of November 2025, there are 6 operators available to choose from for flights from London to Washington.

How old do you have to be to fly from London to Washington?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Washington.

What documentation or ID do you need to fly to Washington?

The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$379 Cheap Flights from London to Washington in 2025/26

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8:35 pm - 5:00 pmLHR-SEA

28h 25m1 stop

2:35 pm - 7:30 pmSEA-LHR

20h 55m1 stop

$601Icelandair

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Tue, Dec 2 - Tue, Dec 9

11:55 am - 5:00 pmLGW-SEA

13h 05m1 stop

2:35 pm - 10:55 amSEA-LGW

12h 20m1 stop

$602Icelandair

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Wed, Dec 3 - Thu, Dec 11

8:25 pm - 11:50 amLHR-SEA

23h 25m1 stop

4:45 pm - 10:30 amSEA-LHR

9h 45mnonstop

$604Virgin Atlantic

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Sun, Jan 11 - Sun, Jan 18

8:25 pm - 11:50 amLHR-SEA

23h 25m1 stop

7:20 pm - 12:50 pmSEA-LHR

9h 30mnonstop

$614Virgin Atlantic

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Fri, Jan 16 - Tue, Jan 20

2:55 pm - 4:55 pmLHR-SEA

10h 00mnonstop

6:50 pm - 12:20 pmSEA-LHR

9h 30mnonstop

$624British Airways

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Fri, Jan 16 - Tue, Jan 20

2:55 pm - 4:55 pmLHR-SEA

10h 00mnonstop

1:25 pm - 7:00 amSEA-LHR

9h 35mnonstop

$626British Airways

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Tue, Feb 24 - Tue, Mar 3

10:00 am - 12:35 pmLHR-SEA

33h 35m1 stop

5:40 pm - 10:30 amSEA-LHR

9h 50mnonstop

$640Delta

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Wed, Mar 18 - Tue, Mar 24

6:30 am - 4:55 pmLHR-SEA

18h 25m2 stops

9:59 pm - 8:05 amSEA-LHR

26h 06m1 stop

$645Delta

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Mon, Mar 2 - Sat, Mar 7

8:30 am - 10:32 pmLHR-PDX

22h 02m2 stops

7:00 pm - 11:50 amPDX-LHR

32h 50m1 stop

$797United Airlines

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Mon, Jan 12 - Sun, Jan 18

9:30 am - 9:49 pmLHR-PDX

20h 19m2 stops

7:51 pm - 8:35 pmPDX-LHR

16h 44m2 stops

$798United Airlines

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Mon, Jan 12 - Sun, Jan 18

Icelandair flights from London to State of Washington

Our best Icelandair deals on London to State of Washington flight tickets

Icelandair

Dec 2

LHR8:35 pmLondon Heathrow

28h 25m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

Dec 9

SEA2:35 pmSeattle/Tacoma Intl

20h 55m

1 stop

LHR7:30 pmLondon Heathrow

$601

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Icelandair

Dec 3

LGW11:55 amLondon Gatwick

13h 05m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

Dec 11

SEA2:35 pmSeattle/Tacoma Intl

12h 20m

1 stop

LGW10:55 amLondon Gatwick

$602

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Icelandair

Nov 25

LGW11:55 amLondon Gatwick

13h 05m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

Dec 2

SEA2:35 pmSeattle/Tacoma Intl

12h 20m

1 stop

LGW10:55 amLondon Gatwick

$605

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British Airways flights from London to State of Washington

Our best British Airways deals on London to State of Washington flight tickets

British Airways

Jan 16

LHR2:55 pmLondon Heathrow

10h 00m

SEA4:55 pmSeattle/Tacoma Intl

Jan 20

SEA6:50 pmSeattle/Tacoma Intl

9h 30m

LHR12:20 pmLondon Heathrow

$624

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British Airways

Feb 24

LHR2:55 pmLondon Heathrow

10h 00m

SEA4:55 pmSeattle/Tacoma Intl

Mar 3

SEA1:25 pmSeattle/Tacoma Intl

9h 35m

LHR7:00 amLondon Heathrow

$626

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British Airways

Mar 10

LHR9:25 amLondon Heathrow

10h 05m

SEA12:30 pmSeattle/Tacoma Intl

Mar 17

SEA7:50 pmSeattle/Tacoma Intl

9h 30m

LHR12:20 pmLondon Heathrow

$627

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LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 12/2

8:35 pm-5:00 pm

1 stop28h 25m

Seattle/Tacoma Intl

Tue 12/9

2:35 pm-7:30 pm

1 stop20h 55m

$601

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 12/3

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Thu 12/11

2:35 pm-10:55 am

1 stop12h 20m

$602

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sun 1/11

8:25 pm-11:50 am

1 stop23h 25m

Seattle/Tacoma Intl

Sun 1/18

4:45 pm-10:30 am

Nonstop9h 45m

$604

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 1/16

8:25 pm-11:50 am

1 stop23h 25m

Seattle/Tacoma Intl

Tue 1/20

7:20 pm-12:50 pm

Nonstop9h 30m

$614

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 1/16

2:55 pm-4:55 pm

Nonstop10h 00m

Seattle/Tacoma Intl

Tue 1/20

6:50 pm-12:20 pm

Nonstop9h 30m

$624

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 2/24

2:55 pm-4:55 pm

Nonstop10h 00m

Seattle/Tacoma Intl

Tue 3/3

1:25 pm-7:00 am

Nonstop9h 35m

$626

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 3/18

10:00 am-12:35 pm

1 stop33h 35m

Seattle/Tacoma Intl

Tue 3/24

5:40 pm-10:30 am

Nonstop9h 50m

$640

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 3/2

6:30 am-4:55 pm

2 stops18h 25m

Seattle/Tacoma Intl

Sat 3/7

9:59 pm-8:05 am

1 stop26h 06m

$645

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 1/12

8:30 am-10:32 pm

2 stops22h 02m

Portland

Sun 1/18

7:00 pm-11:50 am

1 stop32h 50m

$797

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 1/12

9:30 am-9:49 pm

2 stops20h 19m

Portland

Sun 1/18

7:51 pm-8:35 pm

2 stops16h 44m

$798

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How to get the cheapest flight ticket from London to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

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Other information

What is the cheapest month to fly to State of Washington?

The month of January is, on average, the cheapest month to fly to State of Washington from London, with most prices found around $634. If you aren’t able to travel to State of Washington during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $662.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from London to State of Washington is on a Wednesday. Travelers who choose to depart for State of Washington on a Wednesday will often find tickets for as low as $766. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from London to State of Washington for around $1,019.

What is the cheapest time of day to depart on your flight to State of Washington?

The cheapest time of day to fly to State of Washington is in the afternoon when flights can be purchased for as low as $834. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $943 on average. Flights to State of Washington from London in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest London to Washington flight route?

Fly from London Heathrow to Seattle/Tacoma Intl for the best London - Washington flight prices

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from London when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $775 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from London for as low as $726 on momondo.

What cabin class options are available on London to Washington flights?

There are 4 cabin classes available to choose from on London to Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to State of Washington flights?

No. A direct flight is the cheapest option for a flight between London to State of Washington.

Cheap London to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to State of Washington

Best Price Found	$728
Fastest flight time	9h 45m
Direct flights	Every day
Airports in State of Washington	2 airports

The best one-way flight to State of Washington from London in the past 72 hours is $728. The best round-trip flight deal from London to State of Washington found on momondo in the last 72 hours is $790.

The fastest flight from London to State of Washington takes 9h 45m

Direct flights go from London to State of Washington every day.

There are 2 airports near State of Washington: Portland (PDX), Seattle/Tacoma Intl (SEA)

Search flight deals

When did momondo last update prices for flights from London to Washington?
Prices for flights from London to Washington refresh daily.
How many operators does momondo search for flights from London to Washington?
As of November 2025, there are 6 operators available to choose from for flights from London to Washington.
How old do you have to be to fly from London to Washington?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Washington.
What documentation or ID do you need to fly to Washington?
The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from London to State of Washington?
Based on momondo bookings for flights between London and State of Washington, the leading plane model is Boeing 787-9 Dreamliner, making up 27.00% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 23.51%, Airbus A330-900neo with 20.29%, and Airbus A330-200 with 10.91%.

Best airlines flying from London to State of Washington

Compare and see reviews for airlines that fly from London to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $418	Free Cancellation	Rating 7.1 568 reviews	Search Icelandair flights
British Airways	PriceFrom $553	Free Cancellation	Rating 6.7 7,494 reviews	Search British Airways flights
American Airlines	PriceFrom $589	Free Cancellation	Rating 7.2 11,035 reviews	Search American Airlines flights
Virgin Atlantic	PriceFrom $594	Free Cancellation	Rating 7.5 671 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $594	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington?

It is quick and easy to find London to Washington flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington that suits you.

Can I find flights from London to Washington with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Washington?

Once you have performed a search for London to Washington flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from London to Washington right now. Can momondo alert me if prices change?

Price alerts on flights to Washington from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your State of Washington trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Popular cities in Washington

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Cheap flights from London to Washington from $379

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Washington departing on 12/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Icelandair flights from London to State of Washington

Our best Icelandair deals on London to State of Washington flight tickets

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Our best British Airways deals on London to State of Washington flight tickets

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How to get the cheapest flight ticket from London to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to State of Washington?

What is the cheapest day to depart on your flight to State of Washington?

What is the cheapest time of day to depart on your flight to State of Washington?

What is the cheapest London to Washington flight route?

Fly from London Heathrow to Seattle/Tacoma Intl for the best London - Washington flight prices

How far in advance should I book a flight to State of Washington?

What cabin class options are available on London to Washington flights?

There are 4 cabin classes available to choose from on London to Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to State of Washington flights?

No. A direct flight is the cheapest option for a flight between London to State of Washington.

What is the cheapest airline that flies from London to Washington?

JetBlue, Lufthansa, and Finnair are the most popular carriers operating from London to Washington

What airlines fly to State of Washington?

How many flights depart from London to State of Washington on average per day?

The number of flights available between London and State of Washington is 14 per day as of November 2025. The most frequent departure time is 12:00PM, with 78% of daily flights leaving in the afternoon.

How many flights depart from London to State of Washington on average per week?

The number of flights available between London and State of Washington is 102 per week as of November 2025. The most frequent departure day is Mon, with 22% of weekly flights leaving on this day.

Cheap London to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to State of Washington

Best Price Found

Fastest flight time

Direct flights

Airports in State of Washington

When did momondo last update prices for flights from London to Washington?

How many operators does momondo search for flights from London to Washington?

How old do you have to be to fly from London to Washington?

What documentation or ID do you need to fly to Washington?

What is the most popular plane model from London to State of Washington?

Best airlines flying from London to State of Washington

Compare and see reviews for airlines that fly from London to State of Washington with momondo

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington?

Can I find flights from London to Washington with flexible booking policies on momondo?

How can momondo help me find flights from London to Washington?

I’m not ready to book a flight from London to Washington right now. Can momondo alert me if prices change?

An easier way to manage your State of Washington trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Washington

Popular cities in Washington

Popular flights according to clicks in the last 7 days on momondo