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

JetBlue, Lufthansa, and SWISS 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 13 per day as of December 2025. The most frequent departure time is 12:00PM, with 77% 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 96 per week as of December 2025. The most frequent departure day is Wed, with 19% 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 42% 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.

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 December 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.

$404 Cheap Flights from London to Washington in 2025/26

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Cheap round-trip flights

Enter your travel dates to find the best prices.

2:55 pm - 4:55 pm

LHR

SEA

10h 00mnonstop

6:50 pm - 12:20 pm

SEA

LHR

9h 30mnonstop

$593British Airways

Fri, Jan 16 - Mon, Jan 26

3:40 pm - 8:40 pm

LGW

SEA

13h 00m1 stop

3:40 pm - 2:40 pm

SEA

LGW

15h 00m1 stop

$594Icelandair

Sat, Apr 25 - Sat, May 2

2:10 pm - 10:20 pm

LHR

SEA

16h 10m1 stop

8:35 am - 6:50 am

SEA

LHR

14h 15m1 stop

$594Iberia

Sun, Jan 18 - Wed, Jan 28

9:25 am - 11:30 am

LHR

SEA

10h 05mnonstop

1:35 pm - 7:10 am

SEA

LHR

9h 35mnonstop

$595British Airways

Sat, Jan 31 - Sat, Feb 7

3:40 pm - 8:40 pm

LGW

SEA

13h 00m1 stop

7:00 pm - 2:40 pm

SEA

LGW

11h 40m1 stop

$598Icelandair

Mon, Apr 13 - Mon, Apr 20

9:50 am - 11:35 am

LHR

SEA

9h 45mnonstop

1:31 pm - 11:15 am

SEA

LHR

13h 44m1 stop

$600American Airlines

Sat, Jun 13 - Wed, Jun 24

10:35 am - 10:11 pm

LHR

PDX

19h 36m1 stop

6:43 am - 11:40 am

PDX

LHR

20h 57m1 stop

$728Iberia

Mon, Feb 9 - Mon, Feb 23

6:05 am - 6:51 pm

LHR

PDX

20h 46m2 stops

5:44 am - 6:20 am

PDX

LHR

16h 36m2 stops

$733American Airlines

Mon, Feb 9 - Mon, Feb 23

8:40 am - 5:35 pm

LCY

PDX

16h 55m2 stops

1:27 pm - 5:20 pm

PDX

LCY

19h 53m2 stops

$881Virgin Atlantic

Mon, Feb 9 - Mon, Feb 23

8:40 am - 5:35 pm

LCY

PDX

16h 55m2 stops

7:00 am - 8:50 am

PDX

LCY

17h 50m2 stops

$883Virgin Atlantic

Mon, Feb 9 - Mon, Feb 23

Icelandair flights from London to State of Washington

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

Icelandair

Apr 25

LGW3:40 pmLondon Gatwick

13h 00m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

May 2

SEA3:40 pmSeattle/Tacoma Intl

15h 00m

1 stop

LGW2:40 pmLondon Gatwick

$594

Find similar

Icelandair

Apr 13

LGW3:40 pmLondon Gatwick

13h 00m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

Apr 20

SEA7:00 pmSeattle/Tacoma Intl

11h 40m

1 stop

LGW2:40 pmLondon Gatwick

$598

Find similar

Icelandair

Apr 10

LGW3:40 pmLondon Gatwick

13h 00m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

Apr 20

SEA3:40 pmSeattle/Tacoma Intl

15h 00m

1 stop

LGW2:40 pmLondon Gatwick

$605

Find similar

Iberia flights from London to State of Washington

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

Iberia

Jan 18

LHR2:10 pmLondon Heathrow

16h 10m

1 stop

SEA10:20 pmSeattle/Tacoma Intl

Jan 28

SEA8:35 amSeattle/Tacoma Intl

14h 15m

1 stop

LHR6:50 amLondon Heathrow

$594

Find similar

Iberia

Jan 13

LHR8:20 amLondon Heathrow

21h 27m

1 stop

SEA9:47 pmSeattle/Tacoma Intl

Jan 20

SEA8:04 amSeattle/Tacoma Intl

22h 51m

2 stops

LHR2:55 pmLondon Heathrow

$614

Find similar

Iberia

Jan 15

LHR2:10 pmLondon Heathrow

16h 10m

1 stop

SEA10:20 pmSeattle/Tacoma Intl

Jan 22

SEA8:04 amSeattle/Tacoma Intl

25h 11m

2 stops

LHR5:15 pmLondon Heathrow

$618

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 1/16

2:55 pm-4:55 pm

Nonstop10h 00m

Seattle/Tacoma Intl

Mon 1/26

6:50 pm-12:20 pm

Nonstop9h 30m

$593

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 4/25

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Sat 5/2

3:40 pm-2:40 pm

1 stop15h 00m

$594

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sun 1/18

2:10 pm-10:20 pm

1 stop16h 10m

Seattle/Tacoma Intl

Wed 1/28

8:35 am-6:50 am

1 stop14h 15m

$594

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 1/31

9:25 am-11:30 am

Nonstop10h 05m

Seattle/Tacoma Intl

Sat 2/7

1:35 pm-7:10 am

Nonstop9h 35m

$595

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 4/13

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Mon 4/20

7:00 pm-2:40 pm

1 stop11h 40m

$598

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 6/13

9:50 am-11:35 am

Nonstop9h 45m

Seattle/Tacoma Intl

Wed 6/24

1:31 pm-11:15 am

1 stop13h 44m

$600

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 2/9

10:35 am-10:11 pm

1 stop19h 36m

Portland

Mon 2/23

6:43 am-11:40 am

1 stop20h 57m

$728

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Mon 2/9

6:05 am-6:51 pm

2 stops20h 46m

Portland

Mon 2/23

5:44 am-6:20 am

2 stops16h 36m

$733

LondonPortland

LCY - PDX

LCYPDX

London City

Mon 2/9

8:40 am-5:35 pm

2 stops16h 55m

Portland

Mon 2/23

1:27 pm-5:20 pm

2 stops19h 53m

$881

LondonPortland

LCY - PDX

LCYPDX

London City

Mon 2/9

8:40 am-5:35 pm

2 stops16h 55m

Portland

Mon 2/23

7:00 am-8:50 am

2 stops17h 50m

$883

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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?

The month of January is, on average, the cheapest month to fly to State of Washington from London, with most prices found around $643. 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 $653.

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 $776. 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 $924.

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 $819. 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 $763 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 $699 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 7% 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	$662
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 $662. The best round-trip flight deal from London to State of Washington found on momondo in the last 72 hours is $763.

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 refresh daily.
How many operators does momondo search for flights from London to Washington?
As of December 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 33.54% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 18.31%, Airbus A330-200 with 14.85%, and Airbus A330-900neo with 10.51%.

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 7.0 591 reviews	Search Icelandair flights
British Airways	PriceFrom $553	Free Cancellation	Rating 6.7 7,586 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom $574	Free Cancellation	Rating 7.5 675 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $575	Free Cancellation	Rating 7.9 8,008 reviews	Search Delta flights
American Airlines	PriceFrom $589	Free Cancellation	Rating 7.2 11,054 reviews	Search American Airlines 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

Flights to New Yorkfrom $45

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Flights to Seattlefrom $58

Cheap flights from London to Washington from $404

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 5/12. 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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Find the cheapest flights from London to Washington

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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 Iberia 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?

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 7% 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?

JetBlue, Lufthansa, and SWISS 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 13 per day as of December 2025. The most frequent departure time is 12:00PM, with 77% 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 96 per week as of December 2025. The most frequent departure day is Wed, 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, 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