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Cheap flights from Washington to the United Kingdom from £198

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 19/1. 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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Cheap return flights

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Multiple Airlines Logo
14:35 - 21:05SEA-EDI
22h 30m2 stops
Multiple Airlines Logo
07:25 - 17:00EDI-SEA
17h 35m2 stops
£385Multiple Airlines
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Fri, 5 Dec - Wed, 10 Dec
Icelandair Logo
15:45 - 13:20SEA-EDI
13h 35m1 stop
Icelandair Logo
14:15 - 20:45EDI-SEA
14h 30m1 stop
£396Icelandair
Find Deal
Mon, 30 Mar - Fri, 10 Apr
Multiple Airlines Logo
14:35 - 20:30SEA-LTN
21h 55m2 stops
Multiple Airlines Logo
05:50 - 17:00LTN-SEA
19h 10m2 stops
£398Multiple Airlines
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Thu, 5 Feb - Fri, 13 Feb
Scandinavian Airlines Logo
12:45 - 17:40SEA-LHR
20h 55m2 stops
Scandinavian Airlines Logo
06:40 - 22:23LHR-SEA
23h 43m2 stops
£417Scandinavian Airlines
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Thu, 4 Dec - Tue, 9 Dec
Aer Lingus Logo
20:05 - 16:50SEA-LHR
12h 45m1 stop
Aer Lingus Logo
08:50 - 18:20LHR-SEA
17h 30m1 stop
£422Aer Lingus
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Mon, 24 Nov - Wed, 26 Nov
Virgin Atlantic Logo
06:00 - 07:05PDX-LHR
17h 05m1 stop
Virgin Atlantic Logo
11:05 - 17:35LHR-PDX
14h 30m1 stop
£431Virgin Atlantic
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Wed, 14 Jan - Thu, 29 Jan
Virgin Atlantic Logo
06:00 - 07:05PDX-LHR
17h 05m1 stop
Virgin Atlantic Logo
11:05 - 17:35LHR-PDX
14h 30m1 stop
£432Virgin Atlantic
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Wed, 14 Jan - Thu, 29 Jan
Air France Logo
16:48 - 10:30SEA-LHR
9h 42mdirect
Air France Logo
06:20 - 13:25LHR-SEA
15h 05m1 stop
£438Air France
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Wed, 3 Dec - Wed, 10 Dec
Air France Logo
16:45 - 10:30SEA-LHR
9h 45mdirect
Air France Logo
06:20 - 11:25LHR-SEA
13h 05m1 stop
£445Air France
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Wed, 7 Jan - Thu, 22 Jan
Scandinavian Airlines Logo
13:02 - 21:40PDX-LHR
24h 38m2 stops
Scandinavian Airlines Logo
07:05 - 22:22LHR-PDX
22h 17m3 stops
£460Scandinavian Airlines
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Tue, 10 Feb - Tue, 10 Mar

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
4 Dec
SEA12:45Seattle/Tacoma Intl
20h 55m
2 stops
LHR17:40London Heathrow
9 Dec
LHR06:40London Heathrow
23h 43m
2 stops
SEA22:23Seattle/Tacoma Intl
£417
Find similar
Scandinavian Airlines
10 Feb
PDX13:02Portland
24h 38m
2 stops
LHR21:40London Heathrow
10 Mar
LHR07:05London Heathrow
22h 17m
3 stops
PDX22:22Portland
£460
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Scandinavian Airlines
2 Mar
PDX13:02Portland
21h 28m
2 stops
LHR18:30London Heathrow
8 Mar
LHR18:40London Heathrow
34h 42m
2 stops
PDX22:22Portland
£465
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Virgin Atlantic flights from State of Washington to United Kingdom

Our best Virgin Atlantic deals on State of Washington to United Kingdom flight tickets
Virgin Atlantic
14 Jan
PDX06:00Portland
17h 05m
1 stop
LHR07:05London Heathrow
29 Jan
LHR11:05London Heathrow
14h 30m
1 stop
PDX17:35Portland
£431
Find similar
Virgin Atlantic
14 Jan
PDX06:00Portland
17h 05m
1 stop
LHR07:05London Heathrow
29 Jan
LHR11:05London Heathrow
14h 30m
1 stop
PDX17:35Portland
£432
Find similar
Virgin Atlantic
9 Nov
SEA16:48Seattle/Tacoma Intl
9h 42m
LHR10:30London Heathrow
25 Nov
LHR06:20London Heathrow
13h 05m
1 stop
SEA11:25Seattle/Tacoma Intl
£439
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momondo Fare Finder

 
Customise your flight search to find flights from State of Washington to United Kingdom that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 7 November 2025.
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

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Fri 5/12

14:35-21:05

2 stops22h 30m

Edinburgh Turnhouse

Wed 10/12

07:25-17:00

2 stops17h 35m

£385

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Mon 30/3

15:45-13:20

1 stop13h 35m

Edinburgh Turnhouse

Fri 10/4

14:15-20:45

1 stop14h 30m

£396

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Thu 5/2

14:35-20:30

2 stops21h 55m

London Luton

Fri 13/2

05:50-17:00

2 stops19h 10m

£398

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Thu 4/12

12:45-17:40

2 stops20h 55m

London Heathrow

Tue 9/12

06:40-22:23

2 stops23h 43m

£417

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Mon 24/11

20:05-16:50

1 stop12h 45m

London Heathrow

Wed 26/11

08:50-18:20

1 stop17h 30m

£422

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 14/1

06:00-07:05

1 stop17h 05m

London Heathrow

Thu 29/1

11:05-17:35

1 stop14h 30m

£431

PortlandLondon

PDX - LHR

PDXLHR

Portland

Wed 14/1

06:00-07:05

1 stop17h 05m

London Heathrow

Thu 29/1

11:05-17:35

1 stop14h 30m

£432

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Wed 3/12

16:48-10:30

Nonstop9h 42m

London Heathrow

Wed 10/12

06:20-13:25

1 stop15h 05m

£438

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Wed 7/1

16:45-10:30

Nonstop9h 45m

London Heathrow

Thu 22/1

06:20-11:25

1 stop13h 05m

£445

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 10/2

13:02-21:40

2 stops24h 38m

London Heathrow

Tue 10/3

07:05-22:22

3 stops22h 17m

£460

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to the United Kingdom from

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

What is the cheapest month to fly to United Kingdom?

The cheapest month to fly to United Kingdom from State of Washington is in October. Flight prices, which tend to average around £506, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of October, then departing from State of Washington during the month January is also very affordable. Most momondo users find prices during this month for around £519.

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 Tuesday. Travellers who choose to depart for United Kingdom on a Tuesday will often find tickets for as low as £526. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to United Kingdom for around £671.

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

The cheapest time of day to fly to United Kingdom is at midday when flights can be purchased for as low as £598. Try not to purchase tickets in the morning because they tend to be around £1,045. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 £613 when searching weeks before you fly. 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 £538 on momondo.

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

There are 3 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 24% 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

£469

Fastest flight time

9h 15m

Direct flights

Every day

Airports in United Kingdom

1 airport
The best one-way flight to United Kingdom from State of Washington in the past 72 hours is £469. The best return flight deal from State of Washington to United Kingdom found on momondo in the last 72 hours is £498.
The fastest flight from State of Washington to United Kingdom takes 9h 15m
Direct flights go from State of Washington to United Kingdom every day.
There is 1 airport near United Kingdom: 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 are refreshed on a daily basis.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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?

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
British AirwaysPriceFrom £362Free CancellationRating
6.7
7,500 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £377Free CancellationRating
7.5
672 reviews
Search Virgin Atlantic flights
IcelandairPriceFrom £406Free CancellationRating
7.1
572 reviews
Search Icelandair flights
Aer LingusPriceFrom £514Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights

Why use momondo?

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

It is quick and easy to find Washington to United Kingdom 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 United Kingdom that suits you.

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

All flight searches from Washington to United Kingdom on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to United Kingdom from Washington.

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

Of course. momondo tracks the price of Washington to United Kingdom flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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