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 26 per day as of May 2026. The most frequent departure time is 9:00AM, with 50% of daily flights leaving in the afternoon.

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?

Icelandair, SWISS, and British Airways are the most popular carriers operating from London to Washington

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 185 per week as of May 2026. The most frequent departure day is Tue, with 15% 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 refresh daily.

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

As of May 2026, there are 5 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.

$396 Cheap Flights from London to Washington in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

9:25 pm - 11:45 am

LHR

SEA

22h 20m

1 stop

7:00 pm - 8:20 pm

SEA

LHR

17h 20m

1 stop

$704Icelandair

Wed, May 27 - Sun, Jun 7

3:40 pm - 8:40 pm

LGW

SEA

13h 00m

1 stop

7:00 pm - 2:40 pm

SEA

LGW

11h 40m

1 stop

$705Icelandair

Fri, Sep 11 - Sat, Sep 26

9:25 pm - 11:45 am

LHR

SEA

22h 20m

1 stop

11:25 pm - 8:20 pm

SEA

LHR

12h 55m

1 stop

$706Icelandair

Mon, Jun 8 - Mon, Jun 22

1:00 pm - 5:55 pm

LGW

SEA

12h 55m

1 stop

7:00 pm - 2:40 pm

SEA

LGW

11h 40m

1 stop

$708Icelandair

Thu, Jun 25 - Sun, Jul 5

10:00 am - 4:24 pm

LCY

SEA

14h 24m

1 stop

6:05 am - 7:55 am

SEA

LCY

17h 50m

2 stops

$842Delta

Mon, Jun 8 - Wed, Jun 24

9:20 am - 4:39 pm

LCY

SEA

15h 19m

1 stop

3:25 pm - 5:20 pm

SEA

LCY

18h 55m

1 stop

$843Virgin Atlantic

Thu, Oct 22 - Thu, Oct 29

9:20 am - 8:34 pm

LCY

SEA

19h 14m

2 stops

1:55 pm - 9:30 am

SEA

LCY

11h 35m

1 stop

$854Virgin Atlantic

Tue, Jun 9 - Tue, Jun 30

6:05 pm - 8:29 pm

LHR

PDX

34h 24m

2 stops

11:45 am - 6:50 am

PDX

LHR

35h 05m

1 stop

$911American Airlines

Tue, Sep 8 - Sun, Sep 13

6:40 pm - 6:41 pm

LHR

PDX

32h 01m

2 stops

7:00 am - 9:35 am

PDX

LHR

18h 35m

2 stops

$915Scandinavian Airlines

Fri, Sep 4 - Fri, Sep 18

7:50 pm - 9:35 pm

LHR

PDX

33h 45m

2 stops

11:10 am - 5:40 pm

PDX

LHR

22h 30m

2 stops

$921Scandinavian Airlines

Wed, Sep 9 - Sun, Sep 13

Icelandair flights from London to State of Washington

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

Icelandair

May 27

LHR9:25 pmLondon Heathrow

22h 20m

1 stop

SEA11:45 amSeattle/Tacoma Intl

Jun 7

SEA7:00 pmSeattle/Tacoma Intl

17h 20m

1 stop

LHR8:20 pmLondon Heathrow

$704

Icelandair

Jun 3

LGW3:40 pmLondon Gatwick

13h 00m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

Jun 10

SEA11:25 pmSeattle/Tacoma Intl

31h 15m

1 stop

LGW2:40 pmLondon Gatwick

$705

Icelandair

Jun 8

LHR9:25 pmLondon Heathrow

22h 20m

1 stop

SEA11:45 amSeattle/Tacoma Intl

Jun 22

SEA11:25 pmSeattle/Tacoma Intl

12h 55m

1 stop

LHR8:20 pmLondon Heathrow

$706

British Airways flights from London to State of Washington

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

British Airways

Aug 22

LHR9:50 amLondon Heathrow

9h 45m

SEA11:35 amSeattle/Tacoma Intl

Sep 1

SEA8:20 pmSeattle/Tacoma Intl

9h 25m

LHR1:45 pmLondon Heathrow

$716

British Airways

Aug 26

LHR4:30 pmLondon Heathrow

9h 55m

SEA6:25 pmSeattle/Tacoma Intl

Sep 2

SEA1:30 pmSeattle/Tacoma Intl

9h 15m

LHR6:45 amLondon Heathrow

$728

British Airways

Jun 26

LHR9:50 amLondon Heathrow

9h 45m

SEA11:35 amSeattle/Tacoma Intl

Jul 8

SEA8:20 pmSeattle/Tacoma Intl

9h 25m

LHR1:45 pmLondon Heathrow

$729

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 5/27

9:25 pm-11:45 am

1 stop22h 20m

Seattle/Tacoma Intl

Sun 6/7

7:00 pm-8:20 pm

1 stop17h 20m

$704

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 9/11

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Sat 9/26

7:00 pm-2:40 pm

1 stop11h 40m

$705

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 6/8

9:25 pm-11:45 am

1 stop22h 20m

Seattle/Tacoma Intl

Mon 6/22

11:25 pm-8:20 pm

1 stop12h 55m

$706

Quickest round-trip

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 6/25

1:00 pm-5:55 pm

1 stop12h 55m

Seattle/Tacoma Intl

Sun 7/5

7:00 pm-2:40 pm

1 stop11h 40m

$708

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 6/8

10:00 am-4:24 pm

1 stop14h 24m

Seattle/Tacoma Intl

Wed 6/24

6:05 am-7:55 am

2 stops17h 50m

$842

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 10/22

9:20 am-4:39 pm

1 stop15h 19m

Seattle/Tacoma Intl

Thu 10/29

3:25 pm-5:20 pm

1 stop18h 55m

$843

LondonSeattle

LCY - SEA

LCYSEA

London City

Tue 6/9

9:20 am-8:34 pm

2 stops19h 14m

Seattle/Tacoma Intl

Tue 6/30

1:55 pm-9:30 am

1 stop11h 35m

$854

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Tue 9/8

6:05 pm-8:29 pm

2 stops34h 24m

Portland

Sun 9/13

11:45 am-6:50 am

1 stop35h 05m

$911

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Fri 9/4

6:40 pm-6:41 pm

2 stops32h 01m

Portland

Fri 9/18

7:00 am-9:35 am

2 stops18h 35m

$915

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Wed 9/9

7:50 pm-9:35 pm

2 stops33h 45m

Portland

Sun 9/13

11:10 am-5:40 pm

2 stops22h 30m

$921

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 $812. 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 $854. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $904 on average. Flights to State of Washington from London in the morning 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 $782 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 $703 on momondo.

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	$741
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 $741. The best round-trip flight deal from London to State of Washington found on momondo in the last 72 hours is $900.

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 May 2026, there are 5 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 21.69% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 21.44%, Boeing 787-9 Dreamliner with 19.96%, and Boeing 777-300ER with 14.78%.

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 7.0 654 reviews	Search Icelandair flights
Virgin Atlantic	PriceFrom $574	Free Cancellation	Rating 7.4 688 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $600	Free Cancellation	Rating 7.9 8,447 reviews	Search Delta flights
American Airlines	PriceFrom $618	Free Cancellation	Rating 7.1 11,663 reviews	Search American Airlines flights
British Airways	PriceFrom $671	Free Cancellation	Rating 6.7 7,974 reviews	Search British Airways 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Thu 6/11

Thu 6/18

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington

Popular cities

Other flights from London

Other flights to Washington

Airlines

Complete your trip

Feeling lucky

Popular cities in Washington

Flights to New Yorkfrom $77

Flights to Los Angelesfrom $46

Flights to Orlandofrom $63

Flights to Miamifrom $56

Flights to Chicagofrom $59

Flights to San Franciscofrom $58

Flights to Las Vegasfrom $48

Flights to Washington, D.C.from $57

Flights to Bostonfrom $73

Flights to Atlantafrom $50

Flights to Fort Lauderdalefrom $56

Flights to Dallasfrom $50

Cheap flights from London to Washington from $396

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 5/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from London to Washington

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Icelandair flights from London to State of Washington

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

British Airways flights from London to State of Washington

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

momondo Fare Finder

Use the filters below to find and compare flights from London to Washington that are best for you.

See travel insights to Washington from

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?

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

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

State of Washington flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Washington

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Complete your trip to Washington

Explore popular destinations other users love

According to popular flight searches on momondo this year