What is the cheapest airline that flies from Washington to United Kingdom?

Aer Lingus, Icelandair, and Condor are the most popular carriers operating from Washington to United Kingdom

How long is the flight from State of Washington to United Kingdom?

The flight from State of Washington to United Kingdom depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Seattle (a popular airport in State of Washington) to London Heathrow Airport (the most popular airport in United Kingdom), then the flight time is 9h 25m on average. If you fly from Spokane (another popular airport in State of Washington) to London Heathrow Airport, then the average flight time is 14h 18m.

What airlines fly to United Kingdom?

British Airways, Delta and Icelandair are the top three most popular airlines that fly to United Kingdom from State of Washington according to our data. British Airways is the first choice among our users, with 35% of people opting to fly with this airline when traveling to United Kingdom. Keep in mind that there are 15 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Washington to United Kingdom were last updated today.

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

As of March 2026, there are 16 operators available to choose from for flights from Washington to United Kingdom.

How old do you have to be to fly from Washington to United Kingdom?

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 Washington to United Kingdom.

What documentation or ID do you need to fly to United Kingdom?

The necessary travel and health documents for your United Kingdom trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$240 Cheap Flights from Washington to the United Kingdom in 2026

Q: How many flights depart from State of Washington to United Kingdom on average per day?

16 flights are operational daily from State of Washington to United Kingdom as of March 2026. The most popular departure time for this route is 7:00PM, with 50% of flights per day taking off in the afternoon.

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Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 pm - 12:25 am

SEA

EDI

21h 25m

2 stops

10:55 am - 8:40 pm

EDI

SEA

17h 45m

2 stops

$513Multiple Airlines

Sun, Apr 19 - Wed, Apr 29

3:40 pm - 7:15 pm

SEA

LGW

19h 35m

2 stops

8:45 pm - 5:55 pm

LGW

SEA

29h 10m

3 stops

$610Multiple Airlines

Mon, Apr 20 - Mon, Apr 27

3:55 pm - 12:55 pm

SEA

LHR

37h 00m

2 stops

6:40 am - 1:45 pm

LHR

SEA

15h 05m

1 stop

$621Scandinavian Airlines

Tue, Aug 25 - Fri, Aug 28

3:55 pm - 12:55 pm

SEA

LHR

37h 00m

2 stops

10:20 am - 1:45 pm

LHR

SEA

35h 25m

1 stop

$622Scandinavian Airlines

Tue, Aug 25 - Fri, Aug 28

3:30 pm - 11:55 am

PDX

LHR

12h 25m

1 stop

9:25 pm - 6:00 pm

LHR

PDX

28h 35m

1 stop

$699Icelandair

Mon, Apr 27 - Tue, May 12

3:30 pm - 2:40 pm

PDX

LGW

15h 10m

1 stop

3:40 pm - 6:00 pm

LGW

PDX

34h 20m

1 stop

$700Icelandair

Mon, Apr 13 - Tue, Apr 28

2:10 pm - 5:55 pm

SEA

LCY

19h 45m

1 stop

9:15 am - 6:32 pm

LCY

SEA

17h 17m

2 stops

$804Lufthansa

Sun, Sep 13 - Tue, Sep 22

2:10 pm - 5:55 pm

SEA

LCY

19h 45m

1 stop

9:15 am - 6:30 pm

LCY

SEA

17h 15m

2 stops

$806Lufthansa

Mon, Apr 20 - Thu, May 7

5:35 pm - 5:20 pm

SEA

LCY

15h 45m

1 stop

9:20 am - 4:30 pm

LCY

SEA

15h 10m

1 stop

$816Virgin Atlantic

Sun, Apr 19 - Tue, May 5

1:45 pm - 5:20 pm

SEA

LCY

19h 35m

1 stop

8:15 pm - 11:45 am

LCY

SEA

23h 30m

1 stop

$831Virgin Atlantic

Tue, Apr 14 - Tue, Apr 21

Icelandair flights from State of Washington to United Kingdom

Our best Icelandair deals on State of Washington to United Kingdom flight tickets

Icelandair

Sep 7

SEA3:40 pmSeattle/Tacoma Intl

12h 05m

1 stop

LGW11:45 amLondon Gatwick

Sep 11

LGW3:40 pmLondon Gatwick

34h 15m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$678

Icelandair

Apr 18

SEA7:00 pmSeattle/Tacoma Intl

17h 20m

1 stop

LHR8:20 pmLondon Heathrow

Apr 28

LHR1:05 pmLondon Heathrow

12h 50m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$682

Icelandair

Apr 14

SEA3:40 pmSeattle/Tacoma Intl

12h 15m

1 stop

LHR11:55 amLondon Heathrow

Apr 22

LHR9:25 pmLondon Heathrow

28h 30m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$684

Scandinavian Airlines flights from State of Washington to United Kingdom

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

Scandinavian Airlines

Aug 25

SEA3:55 pmSeattle/Tacoma Intl

37h 00m

2 stops

LHR12:55 pmLondon Heathrow

Aug 28

LHR10:20 amLondon Heathrow

35h 25m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$622

Scandinavian Airlines

Aug 16

SEA3:55 pmSeattle/Tacoma Intl

18h 30m

1 stop

EDI6:25 pmEdinburgh Turnhouse

Aug 27

EDI7:10 pmEdinburgh Turnhouse

26h 35m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$640

Scandinavian Airlines

Sep 6

SEA3:55 pmSeattle/Tacoma Intl

17h 45m

1 stop

LHR5:40 pmLondon Heathrow

Sep 18

LHR6:40 amLondon Heathrow

15h 05m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$643

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Sun 4/19

7:00 pm-12:25 am

2 stops21h 25m

Edinburgh Turnhouse

Wed 4/29

10:55 am-8:40 pm

2 stops17h 45m

$513

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 4/20

3:40 pm-7:15 pm

2 stops19h 35m

London Gatwick

Mon 4/27

8:45 pm-5:55 pm

3 stops29h 10m

$610

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 8/25

3:55 pm-12:55 pm

2 stops37h 00m

London Heathrow

Fri 8/28

6:40 am-1:45 pm

1 stop15h 05m

$621

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 8/25

3:55 pm-12:55 pm

2 stops37h 00m

London Heathrow

Fri 8/28

10:20 am-1:45 pm

1 stop35h 25m

$622

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 4/27

3:30 pm-11:55 am

1 stop12h 25m

London Heathrow

Tue 5/12

9:25 pm-6:00 pm

1 stop28h 35m

$699

PortlandLondon

PDX - LGW

PDXLGW

Portland

Mon 4/13

3:30 pm-2:40 pm

1 stop15h 10m

London Gatwick

Tue 4/28

3:40 pm-6:00 pm

1 stop34h 20m

$700

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 9/13

2:10 pm-5:55 pm

1 stop19h 45m

London City

Tue 9/22

9:15 am-6:32 pm

2 stops17h 17m

$804

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 4/20

2:10 pm-5:55 pm

1 stop19h 45m

London City

Thu 5/7

9:15 am-6:30 pm

2 stops17h 15m

$806

Quickest round-trip

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Sun 4/19

5:35 pm-5:20 pm

1 stop15h 45m

London City

Tue 5/5

9:20 am-4:30 pm

1 stop15h 10m

$816

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Tue 4/14

1:45 pm-5:20 pm

1 stop19h 35m

London City

Tue 4/21

8:15 pm-11:45 am

1 stop23h 30m

$831

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 State of Washington to United Kingdom

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 United Kingdom?

In general, October is the cheapest month to fly from State of Washington to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $640. If you aren’t able to travel to United Kingdom during the month of October, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $641.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from State of Washington to United Kingdom is on a Wednesday when prices can be found for as low as $775. The most expensive day to fly to United Kingdom is Friday, with ticket prices averaging around $868.

What is the cheapest time of day to depart on your flight to United Kingdom?

According to our data, the cheapest time of day to fly to United Kingdom is at noon. momondo users have found flights departing from State of Washington to United Kingdom at noon for as low as $805. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the afternoon, with an average ticket price of $839. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Washington to United Kingdom flight route?

Fly from Seattle/Tacoma Intl to London Heathrow for the best Washington - United Kingdom flight prices

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around $777 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from State of Washington for as low as $708 on momondo.

What cabin class options are available on Washington to United Kingdom flights?

There are 4 cabin classes available to choose from on Washington to United Kingdom 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 State of Washington to United Kingdom flights?

You could potentially save up to 9% on your flight if you consider stops on a State of Washington to United Kingdom flight.

Cheap State of Washington to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to United Kingdom

Best Price Found	$461
Fastest flight time	9h 25m
Direct flights	Every day
Airports in United Kingdom	1,286 airports

The best one-way flight to United Kingdom from State of Washington in the past 72 hours is $461. The best round-trip flight deal from State of Washington to United Kingdom found on momondo in the last 72 hours is $814.

The fastest flight from State of Washington to United Kingdom takes 9h 25m

Direct flights go from State of Washington to United Kingdom every day.

There are 1,286 airports in United Kingdom. From State of Washington there are direct flights to London Heathrow (LHR).

Search flight deals

When did momondo last update prices for flights from Washington to United Kingdom?
Prices for flights from Washington to United Kingdom were last updated today.
How many operators does momondo search for flights from Washington to United Kingdom?
As of March 2026, there are 16 operators available to choose from for flights from Washington to United Kingdom.
How old do you have to be to fly from Washington to United Kingdom?
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 Washington to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The necessary travel and health documents for your United Kingdom trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from State of Washington to United Kingdom?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from State of Washington to United Kingdom is Airbus A330-900neo (24.65% of total bookings). The next most popular plane models are Boeing 787-10 Dreamliner (21.47%), Airbus A330-200 (14.25%), and Boeing 777-300ER (13.31%).

Best airlines flying from State of Washington to United Kingdom

Compare and see reviews for airlines that fly from State of Washington to United Kingdom with momondo

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $213	Free Cancellation	Rating 7.2 2,908 reviews	Search JetBlue flights
Icelandair	PriceFrom $481	Free Cancellation	Rating 7.0 625 reviews	Search Icelandair flights
Aer Lingus	PriceFrom $500	Free Cancellation	Rating 7.2 1,482 reviews	Search Aer Lingus flights
American Airlines	PriceFrom $515	Free Cancellation	Rating 7.1 11,486 reviews	Search American Airlines flights
British Airways	PriceFrom $527	Free Cancellation	Rating 6.7 7,813 reviews	Search British Airways flights
Scandinavian Airlines	PriceFrom $532	Free Cancellation	Rating 7.3 1,722 reviews	Search Scandinavian Airlines flights
Air France	PriceFrom $532	Free Cancellation	Rating 7.4 1,547 reviews	Search Air France flights
United Airlines	PriceFrom $547	Free Cancellation	Rating 7.4 9,462 reviews	Search United Airlines flights
Finnair	PriceFrom $556	Free Cancellation	Rating 7.7 1,374 reviews	Search Finnair flights
Delta	PriceFrom $557	Free Cancellation	Rating 7.9 8,318 reviews	Search Delta flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington to United Kingdom. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to United Kingdom from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington to United Kingdom?

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 Washington to United Kingdom.

I’m not ready to book a flight from Washington to United Kingdom right now. Can momondo alert me if prices change?

If you are simply researching potential flights to United Kingdom, momondo offers a useful price alert feature which will track prices for flights to United Kingdom from Washington and alert you when they change.

An easier way to manage your United Kingdom 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 the United Kingdom

Flights to Londonfrom $424

Flights to Manchesterfrom $473

Flights to Edinburghfrom $533

Flights to Glasgowfrom $512

Flights to Birminghamfrom $544

Flights to Newcastle upon Tynefrom $592

Flights to Belfastfrom $625

Flights to Bristolfrom $547

Flights to Invernessfrom $645

Flights to Leedsfrom $586

Flights to Liverpoolfrom $545

Flights to Aberdeenfrom $635

Cheap flights from Washington to the United Kingdom from $240

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to the United Kingdom departing on 4/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Filter for what you want

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Icelandair flights from State of Washington to United Kingdom

Our best Icelandair deals on State of Washington to United Kingdom flight tickets

Scandinavian Airlines flights from State of Washington to United Kingdom

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

momondo Fare Finder

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

See travel insights to the United Kingdom from

How to get the cheapest flight ticket from State of Washington to United Kingdom

What is the cheapest month to fly to United Kingdom?

What is the cheapest day to depart on your flight to United Kingdom?

What is the cheapest time of day to depart on your flight to United Kingdom?

What is the cheapest Washington to United Kingdom flight route?

How far in advance should I book a flight to United Kingdom?

What cabin class options are available on Washington to United Kingdom flights?

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

What is the cheapest airline that flies from Washington to United Kingdom?

What airlines fly to United Kingdom?

How many flights depart from State of Washington to United Kingdom on average per day?

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

How long is the flight from State of Washington to United Kingdom?

Cheap State of Washington to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to United Kingdom

Best Price Found

Fastest flight time

Direct flights

Airports in United Kingdom

Best airlines flying from State of Washington to United Kingdom

Compare and see reviews for airlines that fly from State of Washington to United Kingdom with momondo

Why use momondo?

An easier way to manage your United Kingdom 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 the United Kingdom

Popular cities in the United Kingdom

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

State of Washington flight routes

According to popular flight searches on momondo this year

United Kingdom flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to the United Kingdom

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

Cabin classes currently available on flights to the United Kingdom

List of cabin classes available on flights landing in the United Kingdom. Availability may vary depending on flight origin and airline.

Complete your trip to the United Kingdom

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According to popular flight searches on momondo this year