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 43% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 6 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 week?

The number of flights available between London and State of Washington is 198 per week as of June 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

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

Lufthansa, SWISS, and United Airlines 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 28 per day as of June 2026. The most frequent departure time is 9:00AM, with 52% 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 June 2026, 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.

$397 Cheap Flights from London to Washington in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London to Washington

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:50 am - 11:35 am

LHR

SEA

9h 45mnonstop

6:50 pm - 12:20 pm

SEA

LHR

9h 30mnonstop

$627Finnair

Sat, Oct 17 - Sun, Nov 1

9:00 am - 4:59 pm

LHR

SEA

15h 59m

1 stop

11:00 pm - 9:20 pm

SEA

LHR

14h 20m

1 stop

$628United Airlines

Thu, Jul 9 - Sat, Aug 1

6:30 am - 11:55 am

LHR

SEA

13h 25m

1 stop

1:56 pm - 11:55 am

SEA

LHR

13h 59m

1 stop

$630Lufthansa

Sun, Sep 20 - Sat, Sep 26

6:20 am - 5:10 pm

LHR

SEA

18h 50m

1 stop

8:20 pm - 1:45 pm

SEA

LHR

9h 25mnonstop

$632British Airways

Sun, Sep 20 - Sun, Sep 27

5:45 pm - 8:03 pm

LHR

SEA

10h 18mnonstop

10:40 pm - 8:10 pm

SEA

LHR

13h 30m

1 stop

$633Virgin Atlantic

Sat, Jul 4 - Mon, Jul 13

9:50 am - 11:35 am

LHR

SEA

9h 45mnonstop

8:20 pm - 1:45 pm

SEA

LHR

9h 25mnonstop

$634British Airways

Fri, Aug 28 - Sat, Sep 5

3:40 pm - 5:55 pm

LGW

SEA

34h 15m

1 stop

3:40 pm - 2:40 pm

SEA

LGW

15h 00m

1 stop

$634Icelandair

Sun, Oct 4 - Fri, Oct 9

3:40 pm - 5:55 pm

LGW

SEA

34h 15m

1 stop

3:40 pm - 2:40 pm

SEA

LGW

15h 00m

1 stop

$636Icelandair

Mon, Sep 7 - Wed, Sep 16

5:00 pm - 11:15 am

LGW

SEA

26h 15m

1 stop

1:30 pm - 9:40 am

SEA

LGW

12h 10m

1 stop

$644Virgin Atlantic

Thu, Jul 9 - Mon, Jul 13

9:55 am - 7:44 pm

LHR

PDX

17h 49m

2 stops

7:00 am - 12:10 pm

PDX

LHR

21h 10m

1 stop

$962Delta

Wed, Sep 2 - Tue, Sep 15

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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

Sep 20

LHR6:20 amLondon Heathrow

18h 50m

1 stop

SEA5:10 pmSeattle/Tacoma Intl

Sep 26

SEA10:59 amSeattle/Tacoma Intl

17h 16m

1 stop

LHR12:15 pmLondon Heathrow

$632

British Airways

Aug 28

LHR9:50 amLondon Heathrow

9h 45m

SEA11:35 amSeattle/Tacoma Intl

Sep 5

SEA8:20 pmSeattle/Tacoma Intl

9h 25m

LHR1:45 pmLondon Heathrow

$634

British Airways

Oct 27

LHR9:25 amLondon Heathrow

10h 05m

SEA12:30 pmSeattle/Tacoma Intl

Nov 8

SEA2:46 pmSeattle/Tacoma Intl

12h 49m

1 stop

LHR11:35 amLondon Heathrow

$635

United Airlines flights from London to State of Washington

Our best United Airlines deals on London to State of Washington flight tickets

United Airlines

Jul 9

LHR9:00 amLondon Heathrow

15h 59m

1 stop

SEA4:59 pmSeattle/Tacoma Intl

Jul 30

SEA3:40 pmSeattle/Tacoma Intl

12h 45m

1 stop

LHR12:25 pmLondon Heathrow

$628

United Airlines

Oct 1

LHR6:50 amLondon Heathrow

19h 29m

2 stops

SEA6:19 pmSeattle/Tacoma Intl

Oct 13

SEA8:10 amSeattle/Tacoma Intl

18h 15m

2 stops

LHR10:25 amLondon Heathrow

$636

United Airlines

Jul 4

LHR6:55 amLondon Heathrow

18h 04m

1 stop

SEA4:59 pmSeattle/Tacoma Intl

Jul 17

SEA7:05 amSeattle/Tacoma Intl

16h 50m

1 stop

LHR7:55 amLondon Heathrow

$639

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 10/17

9:50 am-11:35 am

Nonstop9h 45m

Seattle/Tacoma Intl

Sun 11/1

6:50 pm-12:20 pm

Nonstop9h 30m

$627

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 7/9

9:00 am-4:59 pm

1 stop15h 59m

Seattle/Tacoma Intl

Sat 8/1

11:00 pm-9:20 pm

1 stop14h 20m

$628

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sun 9/20

6:30 am-11:55 am

1 stop13h 25m

Seattle/Tacoma Intl

Sat 9/26

1:56 pm-11:55 am

1 stop13h 59m

$630

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sun 9/20

6:20 am-5:10 pm

1 stop18h 50m

Seattle/Tacoma Intl

Sun 9/27

8:20 pm-1:45 pm

Nonstop9h 25m

$632

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 7/4

5:45 pm-8:03 pm

Nonstop10h 18m

Seattle/Tacoma Intl

Mon 7/13

10:40 pm-8:10 pm

1 stop13h 30m

$633

Quickest round-trip

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 8/28

9:50 am-11:35 am

Nonstop9h 45m

Seattle/Tacoma Intl

Sat 9/5

8:20 pm-1:45 pm

Nonstop9h 25m

$634

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 10/4

3:40 pm-5:55 pm

1 stop34h 15m

Seattle/Tacoma Intl

Fri 10/9

3:40 pm-2:40 pm

1 stop15h 00m

$634

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 9/7

3:40 pm-5:55 pm

1 stop34h 15m

Seattle/Tacoma Intl

Wed 9/16

3:40 pm-2:40 pm

1 stop15h 00m

$636

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 7/9

5:00 pm-11:15 am

1 stop26h 15m

Seattle/Tacoma Intl

Mon 7/13

1:30 pm-9:40 am

1 stop12h 10m

$644

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 9/2

9:55 am-7:44 pm

2 stops17h 49m

Portland

Tue 9/15

7:00 am-12:10 pm

1 stop21h 10m

$962

Flights are sorted by cheapest round-trip 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?

The month of February is, on average, the cheapest month to fly to State of Washington from London, with most prices found around $390. 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 $398.

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 Monday. Travelers who choose to depart for State of Washington on a Monday will often find tickets for as low as $849. 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 $947.

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 at noon when flights can be purchased for as low as $853. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $909 on average. Flights to State of Washington from London in the afternoon 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 from London to 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 $790 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 $739 on momondo.

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

There are 4 cabin classes available to choose from on London to State of 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	$637
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 $637. The best round-trip flight deal from London to State of Washington found on momondo in the last 72 hours is $703.

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

Frequently asked questions about flying from London to Washington

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 June 2026, 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 Airbus A330-900neo, making up 22.55% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 19.89%, Boeing 787-9 Dreamliner with 19.42%, and Boeing 777-300ER with 16.08%.

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 $403	Free Cancellation	Rating 7.0 683 reviews	Search Icelandair flights
KLM	PriceFrom $485	Free Cancellation	Rating 7.8 1,530 reviews	Search KLM flights
Delta	PriceFrom $600	Free Cancellation	Rating 7.8 8,424 reviews	Search Delta flights
American Airlines	PriceFrom $618	Free Cancellation	Rating 7.1 11,746 reviews	Search American Airlines flights
British Airways	PriceFrom $661	Free Cancellation	Rating 6.7 8,067 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom $670	Free Cancellation	Rating 7.5 690 reviews	Search Virgin Atlantic 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.

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Flights to Dallasfrom $59

Cheap flights from London to Washington from $397

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 8/28. 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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British Airways flights from London to State of Washington

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

United Airlines flights from London to State of Washington

Our best United Airlines 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?

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?

How far in advance should I book a flight from London to Washington?

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

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

What is the cheapest airline that flies 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?

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

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

Frequently asked questions about flying from London to 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?

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

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

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