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

SWISS, United Airlines, and British Airways 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 54% 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.

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 11 per day as of February 2026. The most frequent departure time is 14:00, with 75% 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 81 per week as of February 2026. The most frequent departure day is Thu, with 19% of weekly flights leaving on this day.

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 February 2026, 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.

£218 Cheap Flights from London to Washington in 2026

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Round-trip

One-way

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Cheap return flights

Enter your travel dates to find the best prices.

21:25 - 17:55

LHR

SEA

28h 30m

1 stop

19:00 - 20:20

SEA

LHR

17h 20m

1 stop

£352Icelandair

Mon, 4 May - Fri, 8 May

15:40 - 20:40

LGW

SEA

13h 00m

1 stop

19:00 - 14:40

SEA

LGW

11h 40m

1 stop

£366Icelandair

Sat, 25 Apr - Sat, 2 May

06:20 - 12:25

LHR

SEA

13h 05m

1 stop

07:20 - 06:50

SEA

LHR

16h 30m

1 stop

£368Virgin Atlantic

Thu, 19 Mar - Thu, 26 Mar

12:15 - 17:00

LHR

SEA

12h 45m

1 stop

15:35 - 10:50

SEA

LHR

12h 15m

1 stop

£369Icelandair

Thu, 19 Feb - Wed, 11 Mar

06:20 - 12:25

LHR

SEA

13h 05m

1 stop

19:25 - 11:55

SEA

LHR

9h 30mdirect

£371Virgin Atlantic

Thu, 19 Mar - Thu, 26 Mar

14:00 - 19:20

LCY

SEA

12h 20m

1 stop

21:05 - 18:35

SEA

LCY

14h 30m

1 stop

£424British Airways

Mon, 9 Mar - Mon, 16 Mar

06:50 - 18:20

LCY

SEA

19h 30m

1 stop

07:21 - 14:35

SEA

LCY

24h 14m

2 stops

£438British Airways

Mon, 2 Mar - Mon, 16 Mar

07:25 - 21:35

LHR

GEG

22h 10m

2 stops

12:35 - 14:10

GEG

LHR

17h 35m

1 stop

£587Lufthansa

Thu, 23 Apr - Mon, 27 Apr

09:30 - 21:11

LHR

GEG

19h 41m

2 stops

07:00 - 11:10

GEG

LHR

20h 10m

1 stop

£588Lufthansa

Thu, 23 Apr - Tue, 28 Apr

20:05 - 11:25

LCY

PDX

23h 20m

1 stop

14:25 - 09:30

PDX

LCY

12h 05m

1 stop

£651KLM

Tue, 3 Mar - Wed, 11 Mar

Icelandair flights from London to State of Washington

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

Icelandair

4 May

LHR21:25London Heathrow

28h 30m

1 stop

SEA17:55Seattle/Tacoma Intl

8 May

SEA19:00Seattle/Tacoma Intl

17h 20m

1 stop

LHR20:20London Heathrow

£352

Icelandair

25 Apr

LGW15:40London Gatwick

13h 00m

1 stop

SEA20:40Seattle/Tacoma Intl

2 May

SEA19:00Seattle/Tacoma Intl

11h 40m

1 stop

LGW14:40London Gatwick

£366

Icelandair

19 Feb

LHR12:15London Heathrow

12h 45m

1 stop

SEA17:00Seattle/Tacoma Intl

11 Mar

SEA15:35Seattle/Tacoma Intl

12h 15m

1 stop

LHR10:50London Heathrow

£369

Virgin Atlantic flights from London to State of Washington

Our best Virgin Atlantic deals on London to State of Washington flight tickets

Virgin Atlantic

19 Mar

LHR06:20London Heathrow

13h 05m

1 stop

SEA12:25Seattle/Tacoma Intl

26 Mar

SEA07:20Seattle/Tacoma Intl

16h 30m

1 stop

LHR06:50London Heathrow

£368

Virgin Atlantic

19 Mar

LHR06:20London Heathrow

13h 05m

1 stop

SEA12:25Seattle/Tacoma Intl

26 Mar

SEA19:25Seattle/Tacoma Intl

9h 30m

LHR11:55London Heathrow

£371

Virgin Atlantic

9 Mar

LHR14:30London Heathrow

10h 05m

SEA17:35Seattle/Tacoma Intl

16 Mar

SEA19:25Seattle/Tacoma Intl

9h 30m

LHR11:55London Heathrow

£374

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 4/5

21:25-17:55

1 stop28h 30m

Seattle/Tacoma Intl

Fri 8/5

19:00-20:20

1 stop17h 20m

£352

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 25/4

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Sat 2/5

19:00-14:40

1 stop11h 40m

£366

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 19/3

06:20-12:25

1 stop13h 05m

Seattle/Tacoma Intl

Thu 26/3

07:20-06:50

1 stop16h 30m

£368

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 19/2

12:15-17:00

1 stop12h 45m

Seattle/Tacoma Intl

Wed 11/3

15:35-10:50

1 stop12h 15m

£369

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 19/3

06:20-12:25

1 stop13h 05m

Seattle/Tacoma Intl

Thu 26/3

19:25-11:55

Nonstop9h 30m

£371

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 9/3

14:00-19:20

1 stop12h 20m

Seattle/Tacoma Intl

Mon 16/3

21:05-18:35

1 stop14h 30m

£424

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 2/3

06:50-18:20

1 stop19h 30m

Seattle/Tacoma Intl

Mon 16/3

07:21-14:35

2 stops24h 14m

£438

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 23/4

07:25-21:35

2 stops22h 10m

Spokane

Mon 27/4

12:35-14:10

1 stop17h 35m

£587

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Thu 23/4

09:30-21:11

2 stops19h 41m

Spokane

Tue 28/4

07:00-11:10

1 stop20h 10m

£588

LondonPortland

LCY - PDX

LCYPDX

London City

Tue 3/3

20:05-11:25

1 stop23h 20m

Portland

Wed 11/3

14:25-09:30

1 stop12h 05m

£651

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of £471.

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 £573. 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 £641.

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 morning is the least expensive time of day to depart. momondo users have found prices as low as £598 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to State of Washington is in the afternoon when prices are around £608.

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 £549 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 £514 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?

You could potentially save up to 1% on your flight if you consider stops on a London to State of Washington flight.

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	£451
Fastest flight time	9h 45m
Direct flights	Every day
Airports in State of Washington	96 airports

The best one-way flight to State of Washington from London in the past 72 hours is £451. The best return flight deal from London to State of Washington found on momondo in the last 72 hours is £447.

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 96 airports in State of Washington. From London there are direct flights to 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 February 2026, 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 Boeing 787-9 Dreamliner, representing 26.55% of all bookings. The subsequent popular models are Boeing 787-10 Dreamliner at 18.40%, Airbus A330-900neo at 12.10%, and Boeing 777-300ER at 11.95%.

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
Lufthansa	PriceFrom £329	Free Cancellation	Rating 6.8 7,761 reviews	Search Lufthansa flights
Icelandair	PriceFrom £336	Free Cancellation	Rating 7.1 606 reviews	Search Icelandair flights
Iberia	PriceFrom £398	Free Cancellation	Rating 7.0 3,104 reviews	Search Iberia flights
Aer Lingus	PriceFrom £409	Free Cancellation	Rating 7.2 1,445 reviews	Search Aer Lingus flights
Air Canada	PriceFrom £412	Free Cancellation	Rating 7.1 10,688 reviews	Search Air Canada flights
United Airlines	PriceFrom £422	Free Cancellation	Rating 7.4 9,236 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom £422	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
Finnair	PriceFrom £428	Free Cancellation	Rating 7.6 1,357 reviews	Search Finnair flights
Delta	PriceFrom £432	Free Cancellation	Rating 7.9 8,147 reviews	Search Delta flights
KLM	PriceFrom £433	Free Cancellation	Rating 7.7 1,448 reviews	Search KLM 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 £294

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 15/4. 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

Virgin Atlantic flights from London to State of Washington

Our best Virgin Atlantic 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

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 February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of £471.

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?

You could potentially save up to 1% on your flight if you consider stops on a London to State of Washington flight.

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

SWISS, United Airlines, and British Airways 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 11 per day as of February 2026. The most frequent departure time is 14:00, with 75% 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 81 per week as of February 2026. The most frequent departure day is Thu, with 19% 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

London flight routes

According to popular flight searches on momondo this year

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