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 174 per week as of September 2025. The most frequent departure day is Wed, with 16% of weekly flights leaving on this day.

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 24 per day as of September 2025. The most frequent departure time is 16:00, with 67% of daily flights leaving in the afternoon.

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

WestJet, British Airways, and Iberia are the most popular carriers operating from London to Washington

Which airlines fly to State of Washington?

Virgin Atlantic, British Airways and Icelandair are the top three most popular airlines that fly to State of Washington from London according to our data. Virgin Atlantic is the first choice among our users, with 50% of people opting to fly with this airline when travelling to State of Washington. Keep in mind that there are 14 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from London to Washington are refreshed on a daily basis.

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

As of September 2025, there are 14 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 for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to Washington.

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

The travel and health documents you'll need for your trip to Washington may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£343 Cheap Flights from London to Washington in 2025

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Cheap return flights

08:30 - 18:36LHR-SEA

18h 06m2 stops

05:30 - 06:30SEA-LHR

17h 00m2 stops

£445Air Canada

Find Deal

Sat, 27 Sep - Wed, 1 Oct

15:40 - 20:40LGW-SEA

13h 00m1 stop

19:00 - 14:35SEA-LGW

11h 35m1 stop

£446Icelandair

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Thu, 16 Oct - Mon, 20 Oct

17:00 - 10:35LHR-SEA

25h 35m2 stops

00:59 - 08:15SEA-LHR

23h 16m1 stop

£447Finnair

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Mon, 3 Nov - Sun, 9 Nov

09:45 - 20:46LHR-SEA

19h 01m2 stops

05:22 - 06:20SEA-LHR

16h 58m2 stops

£448Finnair

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Wed, 8 Oct - Tue, 14 Oct

13:25 - 15:30LHR-SEA

10h 05mdirect

17:35 - 11:20SEA-LHR

9h 45mdirect

£450Virgin Atlantic

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Mon, 22 Sep - Mon, 6 Oct

09:25 - 12:30LHR-SEA

10h 05mdirect

19:50 - 12:20SEA-LHR

9h 30mdirect

£450British Airways

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Tue, 10 Mar - Tue, 17 Mar

13:25 - 15:30LHR-SEA

10h 05mdirect

09:25 - 07:05SEA-LHR

13h 40m1 stop

£453Virgin Atlantic

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Tue, 7 Oct - Tue, 4 Nov

09:25 - 11:30LHR-SEA

10h 05mdirect

11:54 - 10:00SEA-LHR

14h 06m1 stop

£465British Airways

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Tue, 2 Dec - Thu, 15 Jan

07:45 - 16:29LCY-SEA

16h 44m2 stops

12:45 - 16:40SEA-LCY

19h 55m2 stops

£550KLM

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Fri, 3 Oct - Mon, 6 Oct

10:00 - 16:05LCY-SEA

14h 05m1 stop

14:00 - 11:40SEA-LCY

13h 40m1 stop

£566KLM

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Sat, 4 Oct - Fri, 10 Oct

Lufthansa flights from London to State of Washington

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

Lufthansa

5 Oct

LHR06:30London Heathrow

13h 25m

1 stop

SEA11:55Seattle/Tacoma Intl

10 Dec

SEA07:00Seattle/Tacoma Intl

18h 40m

2 stops

LHR09:40London Heathrow

£449

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Lufthansa

18 Sept

LHR06:30London Heathrow

13h 25m

1 stop

SEA11:55Seattle/Tacoma Intl

27 Sept

SEA13:12Seattle/Tacoma Intl

13h 28m

1 stop

LHR10:40London Heathrow

£450

Find similar

Lufthansa

19 Sept

LHR06:30London Heathrow

13h 25m

1 stop

SEA11:55Seattle/Tacoma Intl

24 Sept

SEA14:00Seattle/Tacoma Intl

13h 45m

1 stop

LHR11:45London Heathrow

£451

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SWISS flights from London to State of Washington

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

SWISS

19 Nov

LGW18:40London Gatwick

36h 35m

2 stops

SEA23:15Seattle/Tacoma Intl

3 Dec

SEA13:05Seattle/Tacoma Intl

20h 45m

2 stops

LGW17:50London Gatwick

£463

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SWISS

17 Sept

LCY09:25London City

19h 29m

2 stops

SEA20:54Seattle/Tacoma Intl

24 Sept

SEA15:10Seattle/Tacoma Intl

18h 05m

2 stops

LCY17:15London City

£481

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SWISS

7 Oct

LGW18:35London Gatwick

32h 01m

2 stops

SEA18:36Seattle/Tacoma Intl

4 Nov

SEA14:40Seattle/Tacoma Intl

19h 10m

2 stops

LGW17:50London Gatwick

£487

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Fly to

Route

Depart

Return

Price

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 27/9

08:30-18:36

2 stops18h 06m

Seattle/Tacoma Intl

Wed 1/10

05:30-06:30

2 stops17h 00m

£445

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 16/10

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Mon 20/10

19:00-14:35

1 stop11h 35m

£446

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 3/11

17:00-10:35

2 stops25h 35m

Seattle/Tacoma Intl

Sun 9/11

00:59-08:15

1 stop23h 16m

£447

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 8/10

09:45-20:46

2 stops19h 01m

Seattle/Tacoma Intl

Tue 14/10

05:22-06:20

2 stops16h 58m

£448

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 22/9

13:25-15:30

Nonstop10h 05m

Seattle/Tacoma Intl

Mon 6/10

17:35-11:20

Nonstop9h 45m

£450

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 10/3

09:25-12:30

Nonstop10h 05m

Seattle/Tacoma Intl

Tue 17/3

19:50-12:20

Nonstop9h 30m

£450

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 7/10

13:25-15:30

Nonstop10h 05m

Seattle/Tacoma Intl

Tue 4/11

09:25-07:05

1 stop13h 40m

£453

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 2/12

09:25-11:30

Nonstop10h 05m

Seattle/Tacoma Intl

Thu 15/1

11:54-10:00

1 stop14h 06m

£465

LondonSeattle

LCY - SEA

LCYSEA

London City

Fri 3/10

07:45-16:29

2 stops16h 44m

Seattle/Tacoma Intl

Mon 6/10

12:45-16:40

2 stops19h 55m

£550

LondonSeattle

LCY - SEA

LCYSEA

London City

Sat 4/10

10:00-16:05

1 stop14h 05m

Seattle/Tacoma Intl

Fri 10/10

14:00-11:40

1 stop13h 40m

£566

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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

Airlines

Other information

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

If you aren’t able to travel to State of Washington during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of £487.

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. Travellers who choose to depart for State of Washington on a Wednesday will often find tickets for as low as £584. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to State of Washington on Sunday is £685.

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

Flying to State of Washington from London in the evening is the least expensive time of day to depart. momondo users have found prices as low as £515 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to State of Washington is in the afternoon when prices are around £620.

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 £570 when searching weeks before you fly. 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 £519 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	£584
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 £584. The best return flight deal from London to State of Washington found on momondo in the last 72 hours is £516.

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 are refreshed on a daily basis.
How many operators does momondo search for flights from London to Washington?
As of September 2025, there are 14 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 for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents you'll need for your trip to Washington may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to State of Washington?
momondo data reveals that the most frequently booked plane model on the route from London to State of Washington is Airbus A330-900neo, representing 24.66% of all bookings. The subsequent popular models are Boeing 787-10 Dreamliner at 19.90%, Boeing 787-9 Dreamliner at 17.46%, and Boeing 777-300ER at 13.70%.

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 £323	Free Cancellation	Rating 7.0 546 reviews	Search Icelandair flights
Air France	PriceFrom £381	Free Cancellation	Rating 7.4 1,469 reviews	Search Air France flights
Lufthansa	PriceFrom £392	Free Cancellation	Rating 6.8 7,409 reviews	Search Lufthansa flights
Finnair	PriceFrom £394	Free Cancellation	Rating 7.6 1,323 reviews	Search Finnair flights
KLM	PriceFrom £401	Free Cancellation	Rating 7.8 1,385 reviews	Search KLM flights
United Airlines	PriceFrom £402	Free Cancellation	Rating 7.4 8,937 reviews	Search United Airlines flights
Aer Lingus	PriceFrom £403	Free Cancellation	Rating 7.2 1,271 reviews	Search Aer Lingus flights
British Airways	PriceFrom £425	Free Cancellation	Rating 6.6 7,361 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom £436	Free Cancellation	Rating 7.4 664 reviews	Search Virgin Atlantic flights
Delta	PriceFrom £441	Free Cancellation	Rating 7.9 7,960 reviews	Search Delta flights

Why use momondo?

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

Finding the right flight to Washington from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington quick and easy, saving you time and money.

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

Flights from London to Washington with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight 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?

Yes momondo offers price alerts on flights to Washington from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your State of Washington trip

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

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Cheap flights from London to Washington from £343

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 12/12. 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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Big names, great deals

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Lufthansa flights from London to State of Washington

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

SWISS flights from London to State of Washington

Our best SWISS 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?

If you aren’t able to travel to State of Washington during the month of January, then flying in March is also cheap. Prices for this month can be found on momondo for an average of £487.

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?

WestJet, British Airways, and Iberia are the most popular carriers operating from London to Washington

Which 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 24 per day as of September 2025. The most frequent departure time is 16:00, with 67% 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 174 per week as of September 2025. The most frequent departure day is Wed, with 16% 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, organise 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