When did momondo last update prices for flights from London Stansted Airport to Seattle/Tacoma Intl Airport?

Prices for flights from London Stansted Airport to Seattle/Tacoma Intl Airport were last updated today.

How old do you have to be to fly from London Stansted Airport to Seattle/Tacoma Intl Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Stansted Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The necessary travel and health documents for your Seattle/Tacoma Intl Airport 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.

£360 Cheap Flights from London Stansted Airport to Seattle in 2026

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Find the cheapest flights from London Stansted Airport to Seattle

Round-trip

One-way

Last minute

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Enter your travel dates to find the best prices.

08:30 - 17:00

STN

SEA

16h 30m2 stops

14:35 - 22:50

SEA

STN

24h 15m2 stops

£398Multiple Airlines

Wed, 25 Feb - Wed, 4 Mar

08:30 - 17:00

STN

SEA

16h 30m2 stops

14:35 - 22:50

SEA

STN

24h 15m2 stops

£400Multiple Airlines

Wed, 25 Feb - Wed, 4 Mar

06:30 - 17:00

STN

SEA

18h 30m2 stops

14:35 - 18:20

SEA

STN

19h 45m2 stops

£401Multiple Airlines

Tue, 24 Feb - Tue, 3 Mar

06:30 - 17:00

STN

SEA

18h 30m2 stops

14:35 - 14:50

SEA

STN

16h 15m2 stops

£422Multiple Airlines

Tue, 27 Jan - Sat, 31 Jan

08:40 - 10:33

STN

SEA

32h 53m2 stops

18:55 - 14:35

SEA

STN

11h 40m1 stop

£464Multiple Airlines

Mon, 9 Mar - Wed, 1 Apr

06:30 - 19:18

STN

SEA

20h 48m2 stops

18:55 - 14:40

SEA

STN

11h 45m1 stop

£474Multiple Airlines

Sat, 7 Mar - Mon, 30 Mar

06:30 - 19:18

STN

SEA

20h 48m2 stops

18:55 - 19:30

SEA

STN

16h 35m1 stop

£483Multiple Airlines

Sat, 7 Mar - Wed, 1 Apr

21:45 - 19:18

STN

SEA

28h 33m2 stops

18:55 - 14:35

SEA

STN

11h 40m1 stop

£489Multiple Airlines

Wed, 11 Mar - Wed, 1 Apr

06:30 - 19:18

STN

SEA

19h 48m2 stops

18:55 - 19:30

SEA

STN

16h 35m1 stop

£497Multiple Airlines

Thu, 12 Mar - Wed, 1 Apr

06:30 - 08:31

STN

SEA

34h 01m3 stops

16:10 - 23:50

SEA

STN

24h 40m2 stops

£513Multiple Airlines

Sat, 7 Mar - Fri, 13 Mar

Turkish Airlines flights from London Stansted Airport to Seattle

Our best Turkish Airlines deals on London Stansted Airport to Seattle flight tickets

Turkish Airlines

27 Apr

STN10:50London Stansted

38h 25m

1 stop

SEA17:15Seattle/Tacoma Intl

11 May

SEA19:10Seattle/Tacoma Intl

19h 00m

1 stop

STN22:10London Stansted

£663

Turkish Airlines

4 May

STN10:50London Stansted

38h 25m

1 stop

SEA17:15Seattle/Tacoma Intl

8 May

SEA19:10Seattle/Tacoma Intl

19h 00m

1 stop

STN22:10London Stansted

£671

Turkish Airlines

4 May

STN10:50London Stansted

38h 25m

1 stop

SEA17:15Seattle/Tacoma Intl

8 May

SEA19:10Seattle/Tacoma Intl

19h 00m

1 stop

STN22:10London Stansted

£672

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 25/2

08:30-17:00

2 stops16h 30m

Seattle/Tacoma Intl

Wed 4/3

14:35-22:50

2 stops24h 15m

£398

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 25/2

08:30-17:00

2 stops16h 30m

Seattle/Tacoma Intl

Wed 4/3

14:35-22:50

2 stops24h 15m

£400

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 24/2

06:30-17:00

2 stops18h 30m

Seattle/Tacoma Intl

Tue 3/3

14:35-18:20

2 stops19h 45m

£401

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 27/1

06:30-17:00

2 stops18h 30m

Seattle/Tacoma Intl

Sat 31/1

14:35-14:50

2 stops16h 15m

£422

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 9/3

08:40-10:33

2 stops32h 53m

Seattle/Tacoma Intl

Wed 1/4

18:55-14:35

1 stop11h 40m

£464

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 7/3

06:30-19:18

2 stops20h 48m

Seattle/Tacoma Intl

Mon 30/3

18:55-14:40

1 stop11h 45m

£474

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 7/3

06:30-19:18

2 stops20h 48m

Seattle/Tacoma Intl

Wed 1/4

18:55-19:30

1 stop16h 35m

£483

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 11/3

21:45-19:18

2 stops28h 33m

Seattle/Tacoma Intl

Wed 1/4

18:55-14:35

1 stop11h 40m

£489

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 12/3

06:30-19:18

2 stops19h 48m

Seattle/Tacoma Intl

Wed 1/4

18:55-19:30

1 stop16h 35m

£497

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 7/3

06:30-08:31

3 stops34h 01m

Seattle/Tacoma Intl

Fri 13/3

16:10-23:50

2 stops24h 40m

£513

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Stansted Airport to Seattle

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 day to depart on your flight to Seattle?

According to our data, Wednesday is the cheapest day to fly to Seattle from London Stansted Airport. The lowest ticket price found for a Wednesday departure recently was £585. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Sunday is £655.

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

According to our data, the cheapest time of day to fly to Seattle is at midday. momondo users have found flights departing from London Stansted Airport to Seattle at midday for as low as £612. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive, with an average ticket price of £623.

When to book flights from London Stansted Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from London Stansted Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London Stansted Airport to Seattle (STN to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Stansted Airport to Seattle

Fastest flight time	16h 35m
Direct flights	None

The fastest flight from London Stansted Airport to Seattle takes 16h 35m

There are no direct flights from London Stansted Airport to Seattle. There are no popular flight routes from London Stansted Airport to Seattle.

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How far is London Stansted to Seattle/Tacoma Intl by plane?
A flight from London Stansted to Seattle/Tacoma Intl will travel around 4769.5 mi. Flights usually cover this in 16h 35m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Stansted Airport to Seattle/Tacoma Intl Airport?
Prices for flights from London Stansted Airport to Seattle/Tacoma Intl Airport were last updated today.
How old do you have to be to fly from London Stansted Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Stansted Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport 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.

Fife

SeaTac

Tukwila

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Seattle. momondo saves you time and could save you money on your trip.

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

All flight searches from London to Seattle on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from London to Seattle?

momondo helps you find the best flight between London and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from London to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.