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 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 Stansted Airport to Seattle/Tacoma Intl Airport.

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

The required travel and health documents for your Seattle/Tacoma Intl Airport 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 Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$541 Cheap Flights from London Stansted Airport to Seattle in 2025/26

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Find the cheapest flights from London Stansted Airport to Seattle

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One-way

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7:00 pm - 12:10 pmSTN-SEA

25h 10m2 stops

2:00 pm - 10:20 pmSEA-STN

24h 20m2 stops

$670Multiple Airlines

Find Deal

Fri, Jan 23 - Sat, Feb 7

5:55 am - 3:40 pmSTN-SEA

17h 45m2 stops

5:40 pm - 11:25 amSEA-STN

33h 45m3 stops

$727Multiple Airlines

Find Deal

Mon, Jan 19 - Mon, Feb 2

5:55 am - 3:40 pmSTN-SEA

17h 45m2 stops

5:40 pm - 11:25 amSEA-STN

33h 45m3 stops

$728Multiple Airlines

Find Deal

Mon, Jan 19 - Mon, Feb 2

5:55 am - 3:40 pmSTN-SEA

17h 45m2 stops

5:40 pm - 11:25 amSEA-STN

33h 45m3 stops

$729Multiple Airlines

Find Deal

Mon, Jan 19 - Mon, Feb 2

6:15 am - 5:00 pmSTN-SEA

18h 45m2 stops

8:05 pm - 6:20 pmSEA-STN

14h 15m1 stop

$849Multiple Airlines

Find Deal

Thu, Feb 12 - Mon, Feb 23

6:15 am - 5:00 pmSTN-SEA

18h 45m2 stops

2:35 pm - 7:25 pmSEA-STN

20h 50m2 stops

$857Multiple Airlines

Find Deal

Thu, Feb 12 - Mon, Feb 23

6:00 pm - 1:20 pmSTN-SEA

27h 20m2 stops

3:10 pm - 11:05 pmSEA-STN

23h 55m2 stops

$865Multiple Airlines

Find Deal

Tue, Dec 23 - Fri, Jan 9

5:55 am - 10:16 pmSTN-SEA

24h 21m2 stops

3:10 pm - 7:10 pmSEA-STN

20h 00m2 stops

$876Multiple Airlines

Find Deal

Fri, Jan 9 - Fri, Jan 16

6:15 am - 5:00 pmSTN-SEA

18h 45m2 stops

2:35 pm - 7:25 pmSEA-STN

20h 50m2 stops

$883Multiple Airlines

Find Deal

Thu, Feb 12 - Mon, Feb 23

5:55 am - 10:16 pmSTN-SEA

24h 21m2 stops

2:35 pm - 2:25 pmSEA-STN

15h 50m2 stops

$895Multiple Airlines

Find Deal

Tue, Feb 3 - Sat, Feb 7

Turkish Airlines flights from London Stansted Airport to Seattle

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

Turkish Airlines

May 1

STN6:15 amLondon Stansted

19h 00m

1 stop

SEA5:15 pmSeattle/Tacoma Intl

May 14

SEA7:10 pmSeattle/Tacoma Intl

31h 05m

1 stop

STN10:15 amLondon Stansted

$907

Find similar

Turkish Airlines

May 2

STN5:45 pmLondon Stansted

31h 30m

1 stop

SEA5:15 pmSeattle/Tacoma Intl

May 16

SEA7:10 pmSeattle/Tacoma Intl

31h 05m

1 stop

STN10:15 amLondon Stansted

$946

Find similar

Turkish Airlines

Apr 13

STN11:10 amLondon Stansted

38h 05m

1 stop

SEA5:15 pmSeattle/Tacoma Intl

Apr 21

SEA7:10 pmSeattle/Tacoma Intl

37h 40m

1 stop

STN4:50 pmLondon Stansted

$955

Find similar

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

Fri 1/23

7:00 pm-12:10 pm

2 stops25h 10m

Seattle/Tacoma Intl

Sat 2/7

2:00 pm-10:20 pm

2 stops24h 20m

$670

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 1/19

5:55 am-3:40 pm

2 stops17h 45m

Seattle/Tacoma Intl

Mon 2/2

5:40 pm-11:25 am

3 stops33h 45m

$727

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 1/19

5:55 am-3:40 pm

2 stops17h 45m

Seattle/Tacoma Intl

Mon 2/2

5:40 pm-11:25 am

3 stops33h 45m

$728

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 1/19

5:55 am-3:40 pm

2 stops17h 45m

Seattle/Tacoma Intl

Mon 2/2

5:40 pm-11:25 am

3 stops33h 45m

$729

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 2/12

6:15 am-5:00 pm

2 stops18h 45m

Seattle/Tacoma Intl

Mon 2/23

8:05 pm-6:20 pm

1 stop14h 15m

$849

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 2/12

6:15 am-5:00 pm

2 stops18h 45m

Seattle/Tacoma Intl

Mon 2/23

2:35 pm-7:25 pm

2 stops20h 50m

$857

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 12/23

6:00 pm-1:20 pm

2 stops27h 20m

Seattle/Tacoma Intl

Fri 1/9

3:10 pm-11:05 pm

2 stops23h 55m

$865

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 1/9

5:55 am-10:16 pm

2 stops24h 21m

Seattle/Tacoma Intl

Fri 1/16

3:10 pm-7:10 pm

2 stops20h 00m

$876

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 2/12

6:15 am-5:00 pm

2 stops18h 45m

Seattle/Tacoma Intl

Mon 2/23

2:35 pm-7:25 pm

2 stops20h 50m

$883

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 2/3

5:55 am-10:16 pm

2 stops24h 21m

Seattle/Tacoma Intl

Sat 2/7

2:35 pm-2:25 pm

2 stops15h 50m

$895

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 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?

On average, the least expensive day to fly to Seattle from London Stansted Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $769. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from London Stansted Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,028.

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

Flying to Seattle from London Stansted Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $820 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $868. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 round-trip 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 30m
Direct flights	None

The fastest flight from London Stansted Airport to Seattle takes 16h 30m

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?
The distance between London Stansted and Seattle/Tacoma Intl is about 4769.5 mi. A reasonable flight in good conditions will take 14h 20m.
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 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 Stansted Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport 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 Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Marysville

Puyallup

Redmond

Tukwila

Cle Elum

Lakewood

Federal Way

Fife

Centralia

Kirkland

Westport

Shoreline

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from London.

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

Yes. momondo enables you to select and highlight flights to Seattle from London with this policy.

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

momondo provides multiple filters to help you find the best flight to Seattle from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

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