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Cheap flights from Seattle to the United Kingdom from £207

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to the United Kingdom departing on 4/5. 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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0 bags

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Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
14:35 - 09:55
SEA
-
GLA
11h 20m1 stop
Icelandair Logo
12:35 - 17:00
GLA
-
SEA
12h 25m1 stop
£357Icelandair
Thu, 19 Feb - Fri, 27 Feb
Icelandair Logo
14:35 - 10:20
SEA
-
EDI
11h 45m1 stop
Icelandair Logo
11:00 - 17:00
EDI
-
SEA
14h 00m1 stop
£361Icelandair
Mon, 12 Jan - Sun, 25 Jan
Icelandair Logo
14:35 - 09:55
SEA
-
GLA
11h 20m1 stop
Icelandair Logo
12:35 - 17:00
GLA
-
SEA
12h 25m1 stop
£364Icelandair
Fri, 23 Jan - Fri, 30 Jan
Multiple Airlines Logo
15:10 - 22:15
SEA
-
EDI
23h 05m2 stops
Multiple Airlines Logo
18:50 - 12:10
EDI
-
SEA
25h 20m2 stops
£424Multiple Airlines
Wed, 21 Jan - Wed, 28 Jan
Multiple Airlines Logo
18:50 - 23:20
SEA
-
STN
20h 30m2 stops
Multiple Airlines Logo
18:00 - 12:20
STN
-
SEA
26h 20m2 stops
£435Multiple Airlines
Wed, 8 Apr - Tue, 14 Apr
British Airways Logo
13:35 - 10:45
SEA
-
GLA
13h 10m1 stop
British Airways Logo
06:35 - 11:30
GLA
-
SEA
12h 55m1 stop
£438British Airways
Sat, 7 Feb - Sat, 14 Feb
British Airways Logo
13:35 - 10:45
SEA
-
GLA
13h 10m1 stop
British Airways Logo
06:35 - 11:30
GLA
-
SEA
12h 55m1 stop
£439British Airways
Sat, 7 Feb - Sat, 14 Feb
Virgin Atlantic Logo
15:10 - 17:20
SEA
-
LCY
18h 10m1 stop
Virgin Atlantic Logo
10:00 - 08:41
LCY
-
SEA
30h 41m2 stops
£485Virgin Atlantic
Wed, 21 Jan - Wed, 4 Feb
Virgin Atlantic Logo
07:10 - 09:30
SEA
-
LCY
18h 20m2 stops
Virgin Atlantic Logo
20:05 - 11:50
LCY
-
SEA
23h 45m1 stop
£488Virgin Atlantic
Fri, 23 Jan - Fri, 30 Jan
KLM Logo
17:35 - 08:45
SEA
-
NCL
31h 10m1 stop
KLM Logo
17:35 - 15:50
NCL
-
SEA
30h 15m1 stop
£655KLM
Sat, 4 Apr - Fri, 10 Apr

Lufthansa flights from Seattle to United Kingdom

Our best Lufthansa deals on Seattle to United Kingdom flight tickets
Lufthansa
8 Jan
SEA14:10Seattle/Tacoma Intl
13h 05m
1 stop
LHR11:15London Heathrow
15 Jan
LHR06:30London Heathrow
13h 40m
1 stop
SEA12:10Seattle/Tacoma Intl
£434
Find similar
Lufthansa
21 Jan
SEA09:55Seattle/Tacoma Intl
16h 15m
2 stops
LHR10:10London Heathrow
25 Jan
LHR07:40London Heathrow
13h 40m
1 stop
SEA13:20Seattle/Tacoma Intl
£435
Find similar
Lufthansa
13 Feb
SEA07:00Seattle/Tacoma Intl
16h 55m
1 stop
LHR07:55London Heathrow
1 Mar
LHR07:40London Heathrow
13h 40m
1 stop
SEA13:20Seattle/Tacoma Intl
£438
Find similar

Virgin Atlantic flights from Seattle to United Kingdom

Our best Virgin Atlantic deals on Seattle to United Kingdom flight tickets
Virgin Atlantic
26 Jan
SEA15:10Seattle/Tacoma Intl
13h 35m
1 stop
MAN12:45Manchester
2 Feb
MAN13:00Manchester
17h 25m
1 stop
SEA22:25Seattle/Tacoma Intl
£445
Find similar
Virgin Atlantic
24 Jan
SEA18:25Seattle/Tacoma Intl
9h 30m
LHR11:55London Heathrow
31 Jan
LHR15:05London Heathrow
10h 05m
SEA17:10Seattle/Tacoma Intl
£458
Find similar
Virgin Atlantic
11 Feb
SEA13:38Seattle/Tacoma Intl
36h 52m
2 stops
MAN10:30Manchester
15 Feb
MAN17:25Manchester
26h 15m
1 stop
SEA11:40Seattle/Tacoma Intl
£465
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Seattle 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 12 December 2025.
Use the filters below to find and compare flights from Seattle to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Thu 19/2

14:35-09:55

1 stop11h 20m

Glasgow Intl

Fri 27/2

12:35-17:00

1 stop12h 25m

£357

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Mon 12/1

14:35-10:20

1 stop11h 45m

Edinburgh Turnhouse

Sun 25/1

11:00-17:00

1 stop14h 00m

£361

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Fri 23/1

14:35-09:55

1 stop11h 20m

Glasgow Intl

Fri 30/1

12:35-17:00

1 stop12h 25m

£364

SeattleEdinburgh

SEA - EDI

SEAEDI

Seattle/Tacoma Intl

Wed 21/1

15:10-22:15

2 stops23h 05m

Edinburgh Turnhouse

Wed 28/1

18:50-12:10

2 stops25h 20m

£424

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 8/4

18:50-23:20

2 stops20h 30m

London Stansted

Tue 14/4

18:00-12:20

2 stops26h 20m

£435

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sat 7/2

13:35-10:45

1 stop13h 10m

Glasgow Intl

Sat 14/2

06:35-11:30

1 stop12h 55m

£438

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Sat 7/2

13:35-10:45

1 stop13h 10m

Glasgow Intl

Sat 14/2

06:35-11:30

1 stop12h 55m

£439

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 21/1

15:10-17:20

1 stop18h 10m

London City

Wed 4/2

10:00-08:41

2 stops30h 41m

£485

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Fri 23/1

07:10-09:30

2 stops18h 20m

London City

Fri 30/1

20:05-11:50

1 stop23h 45m

£488

SeattleNewcastle upon Tyne

SEA - NCL

SEANCL

Seattle/Tacoma Intl

Sat 4/4

17:35-08:45

1 stop31h 10m

Newcastle upon Tyne

Fri 10/4

17:35-15:50

1 stop30h 15m

£655

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 Seattle 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 Seattle is in November. Flight prices, which tend to average around £482, 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 November, then departing from Seattle during the month October is also very affordable. Most momondo users find prices during this month for around £483.

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

The cheapest day to depart from Seattle 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 £514. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to United Kingdom for around £656.

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 £543. Try not to purchase tickets in the morning because they tend to be around £1,022. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Seattle/Tacoma Intl to United Kingdom flight route?

Fly from Seattle/Tacoma Intl to London Heathrow for the best Seattle/Tacoma Intl - 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 Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £594 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 Seattle for as low as £517 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to United Kingdom flights?

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl 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 Seattle to United Kingdom flights?

You could potentially save up to 27% on your flight if you consider stops on a Seattle to United Kingdom flight.

Cheap Seattle to United Kingdom flight deals and tips

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

Best price found

£325

Fastest flight time

9h 15m

Direct flights

Every day

Airports in United Kingdom

1,286 airports
The best one-way flight to United Kingdom from Seattle in the past 72 hours is £325. The best return flight deal from Seattle to United Kingdom found on momondo in the last 72 hours is £825.
The fastest flight from Seattle to United Kingdom takes 9h 15m
Direct flights go from Seattle to United Kingdom every day.
There are 1,286 airports in United Kingdom. From Seattle there are direct flights to London Heathrow (LHR).
Search flight deals

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to United Kingdom?

    Prices for flights from Seattle/Tacoma Intl Airport to United Kingdom were last updated today.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to United Kingdom?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport 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 Seattle/Tacoma Intl Airport to United Kingdom.

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

    The required travel and health documents for your United Kingdom 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 United Kingdom. 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 Seattle to United Kingdom?

Best airlines flying from Seattle to United Kingdom

Compare and see reviews for airlines that fly from Seattle to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £354Free CancellationRating
6.7
7,571 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £369Free CancellationRating
7.5
675 reviews
Search Virgin Atlantic flights
IcelandairPriceFrom £397Free CancellationRating
7.0
589 reviews
Search Icelandair flights
Aer LingusPriceFrom £502Free CancellationRating
7.2
1,394 reviews
Search Aer Lingus flights

Why use momondo?

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

Finding the right flight to United Kingdom from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to United Kingdom quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Seattle to United Kingdom flights to just show those with flexible booking policies.

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

Once you have performed a search for Seattle to United Kingdom 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 Seattle to United Kingdom right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Seattle to United Kingdom flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your United Kingdom trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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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
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