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.

$515 Cheap Flights from London Stansted Airport to Seattle in 2026/27

Find the cheapest flights from London Stansted Airport to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:15 am - 5:00 pmSTN London Stansted-SEA Seattle/Tacoma Intl

17h 45m2 stops Dublin Reykjavik Keflavik Intl

2:35 pm - 8:15 pmSEA Seattle/Tacoma Intl-STN London Stansted

21h 40m2 stops Reykjavik Keflavik Intl Dublin

$678Multiple Airlines

Tue, Dec 1 - Tue, Dec 8

6:45 am - 5:00 pmSTN London Stansted-SEA Seattle/Tacoma Intl

18h 15m2 stops Dublin Reykjavik Keflavik Intl

2:35 pm - 9:55 pmSEA Seattle/Tacoma Intl-STN London Stansted

23h 20m2 stops Reykjavik Keflavik Intl Dublin

$678Multiple Airlines

Thu, Nov 5 - Mon, Nov 9

7:15 am - 5:00 pmSTN London Stansted-SEA Seattle/Tacoma Intl

17h 45m2 stops Dublin Reykjavik Keflavik Intl

2:35 pm - 8:15 pmSEA Seattle/Tacoma Intl-STN London Stansted

21h 40m2 stops Reykjavik Keflavik Intl Dublin

$681Multiple Airlines

Tue, Dec 1 - Tue, Dec 8

7:15 am - 5:00 pmSTN London Stansted-SEA Seattle/Tacoma Intl

17h 45m2 stops Dublin Reykjavik Keflavik Intl

2:35 pm - 9:50 pmSEA Seattle/Tacoma Intl-STN London Stansted

23h 15m2 stops Reykjavik Keflavik Intl Dublin

$696Multiple Airlines

Tue, Dec 1 - Tue, Dec 8

7:15 am - 5:00 pmSTN London Stansted-SEA Seattle/Tacoma Intl

17h 45m2 stops Dublin Reykjavik Keflavik Intl

2:35 pm - 11:20 pmSEA Seattle/Tacoma Intl-STN London Stansted

24h 45m2 stops Reykjavik Keflavik Intl Dublin

$701Multiple Airlines

Wed, Dec 2 - Wed, Dec 9

6:05 am - 3:55 pmSTN London Stansted-SEA Seattle/Tacoma Intl

17h 50m2 stops Vienna Intl Frankfurt am Main

5:50 pm - 9:30 pmSEA Seattle/Tacoma Intl-STN London Stansted

19h 40m2 stops Frankfurt am Main Vienna Intl

$706Multiple Airlines

Mon, Feb 1 - Mon, Feb 8

7:20 am - 5:00 pmSTN London Stansted-SEA Seattle/Tacoma Intl

17h 40m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl

2:35 pm - 11:45 pmSEA Seattle/Tacoma Intl-STN London Stansted

25h 10m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen

$747Multiple Airlines

Thu, Dec 3 - Wed, Dec 9

8:15 am - 5:00 pmSTN London Stansted-SEA Seattle/Tacoma Intl

16h 45m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl

2:35 pm - 6:00 pmSEA Seattle/Tacoma Intl-STN London Stansted

19h 25m2 stops Reykjavik Keflavik Intl Stockholm Arlanda

$754Multiple Airlines

Wed, Nov 11 - Mon, Nov 16

8:15 am - 5:00 pmSTN London Stansted-SEA Seattle/Tacoma Intl

16h 45m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl

2:35 pm - 6:50 pmSEA Seattle/Tacoma Intl-STN London Stansted

20h 15m2 stops Reykjavik Keflavik Intl Oslo Gardermoen

$763Multiple Airlines

Tue, Nov 24 - Tue, Dec 1

5:55 pm - 3:55 pmSTN London Stansted-SEA Seattle/Tacoma Intl

30h 00m2 stops Milan Malpensa Frankfurt am Main

4:15 pm - 6:15 pmSEA Seattle/Tacoma Intl-STN London Stansted

18h 00m2 stops Frankfurt am Main Milan Malpensa

$769Multiple Airlines

Wed, Nov 4 - Sun, Nov 8

Cheap last minute flights

Enter your travel dates to find the best prices.

9:55 am - 1:00 pmSTN London Stansted-SEA Seattle/Tacoma Intl

34h 05m2 stops Berlin Brandenburg Frankfurt am Main

1:50 pm - 9:00 pmSEA Seattle/Tacoma Intl-STN London Stansted

23h 10m2 stops Frankfurt am Main Berlin Brandenburg

$1,138Multiple Airlines

Wed, Oct 28 - Mon, Nov 16

6:35 am - 6:45 pmSTN London Stansted-SEA Seattle/Tacoma Intl

20h 10m2 stops Dublin Calgary

2:35 pm - 3:40 pmSEA Seattle/Tacoma Intl-STN London Stansted

17h 05m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen

$1,206Multiple Airlines

Fri, Oct 23 - Sun, Nov 8

5:20 pm - 6:10 pmSTN London Stansted-SEA Seattle/Tacoma Intl

31h 50m1 stop Istanbul

7:05 pm - 4:20 pmSEA Seattle/Tacoma Intl-STN London Stansted

37h 15m1 stop Istanbul

$1,221Turkish Airlines

Sun, Oct 25 - Wed, Nov 25

5:20 pm - 6:10 pmSTN London Stansted-SEA Seattle/Tacoma Intl

31h 50m1 stop Istanbul

10:50 am - 9:55 amSEA Seattle/Tacoma Intl-STN London Stansted

39h 05m2 stops Chicago O'Hare Intl Istanbul

$1,350Turkish Airlines

Sun, Oct 25 - Wed, Nov 25

8:00 am - 8:40 pmSTN London Stansted-SEA Seattle/Tacoma Intl

19h 40m1 stop Reykjavik Keflavik Intl

2:35 pm - 5:25 pmSEA Seattle/Tacoma Intl-STN London Stansted

18h 50m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen

$1,362Multiple Airlines

Sun, Oct 25 - Thu, Dec 31

11:55 pm - 6:10 pmSTN London Stansted-SEA Seattle/Tacoma Intl

25h 15m2 stops Izmir Adnan Menderes Arpt Istanbul

2:35 pm - 5:25 pmSEA Seattle/Tacoma Intl-STN London Stansted

18h 50m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen

$1,379Multiple Airlines

Sun, Oct 25 - Thu, Dec 31

6:20 pm - 6:10 pmSTN London Stansted-SEA Seattle/Tacoma Intl

30h 50m2 stops Milan Malpensa Istanbul

10:10 am - 10:45 pmSEA Seattle/Tacoma Intl-STN London Stansted

28h 35m3 stops Vancouver Intl Frankfurt am Main Milan Malpensa

$1,422Multiple Airlines

Tue, Oct 27 - Mon, Nov 9

8:00 am - 8:40 pmSTN London Stansted-SEA Seattle/Tacoma Intl

19h 40m1 stop Reykjavik Keflavik Intl

2:35 pm - 6:05 pmSEA Seattle/Tacoma Intl-STN London Stansted

19h 30m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen

$1,472Multiple Airlines

Sun, Oct 25 - Tue, Nov 17

9:00 pm - 6:10 pmSTN London Stansted-SEA Seattle/Tacoma Intl

28h 10m2 stops Barcelona-El Prat Istanbul

2:35 pm - 1:35 pmSEA Seattle/Tacoma Intl-STN London Stansted

15h 00m2 stops Reykjavik Keflavik Intl Dublin

$1,508Multiple Airlines

Wed, Oct 28 - Wed, Nov 4

10:55 am - 6:10 pmSTN London Stansted-SEA Seattle/Tacoma Intl

38h 15m1 stop Istanbul

7:05 pm - 9:55 amSEA Seattle/Tacoma Intl-STN London Stansted

30h 50m1 stop Istanbul

$1,510Turkish Airlines

Wed, Oct 28 - Sat, Nov 28

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Turkish Airlines flights from London Stansted Airport to Seattle

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

Turkish Airlines

Nov 3

STN5:20 pmLondon Stansted

37h 47m

2 stops

SEA11:07 pmSeattle/Tacoma Intl

Nov 10

SEA10:50 amSeattle/Tacoma Intl

39h 05m

2 stops

STN9:55 amLondon Stansted

$958

Turkish Airlines

Nov 5

STN5:20 pmLondon Stansted

32h 50m

1 stop

SEA6:10 pmSeattle/Tacoma Intl

Nov 10

SEA10:50 amSeattle/Tacoma Intl

39h 05m

2 stops

STN9:55 amLondon Stansted

$997

Turkish Airlines

Nov 2

STN10:55 amLondon Stansted

44h 12m

2 stops

SEA11:07 pmSeattle/Tacoma Intl

Nov 7

SEA10:50 amSeattle/Tacoma Intl

39h 05m

2 stops

STN9:55 amLondon Stansted

$999

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

Cheapest round-trip

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Tue 12/1

7:15 am-5:00 pm

2 stops17h 45m

Seattle/Tacoma Intl

Tue 12/8

2:35 pm-8:15 pm

2 stops21h 40m

$678

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Thu 11/5

6:45 am-5:00 pm

2 stops18h 15m

Seattle/Tacoma Intl

Mon 11/9

2:35 pm-9:55 pm

2 stops23h 20m

$678

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Tue 12/1

7:15 am-5:00 pm

2 stops17h 45m

Seattle/Tacoma Intl

Tue 12/8

2:35 pm-8:15 pm

2 stops21h 40m

$681

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Tue 12/1

7:15 am-5:00 pm

2 stops17h 45m

Seattle/Tacoma Intl

Tue 12/8

2:35 pm-9:50 pm

2 stops23h 15m

$696

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Wed 12/2

7:15 am-5:00 pm

2 stops17h 45m

Seattle/Tacoma Intl

Wed 12/9

2:35 pm-11:20 pm

2 stops24h 45m

$701

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Mon 2/1

6:05 am-3:55 pm

2 stops17h 50m

Seattle/Tacoma Intl

Mon 2/8

5:50 pm-9:30 pm

2 stops19h 40m

$706

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Thu 12/3

7:20 am-5:00 pm

2 stops17h 40m

Seattle/Tacoma Intl

Wed 12/9

2:35 pm-11:45 pm

2 stops25h 10m

$747

Quickest round-trip

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Wed 11/11

8:15 am-5:00 pm

2 stops16h 45m

Seattle/Tacoma Intl

Mon 11/16

2:35 pm-6:00 pm

2 stops19h 25m

$754

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Tue 11/24

8:15 am-5:00 pm

2 stops16h 45m

Seattle/Tacoma Intl

Tue 12/1

2:35 pm-6:50 pm

2 stops20h 15m

$763

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Wed 11/4

5:55 pm-3:55 pm

2 stops30h 00m

Seattle/Tacoma Intl

Sun 11/8

4:15 pm-6:15 pm

2 stops18h 00m

$769

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 Monday. momondo users have found tickets for Monday departures for as low as $770. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday 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 $896.

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

Flying to Seattle from London Stansted Airport at noon is the least expensive time of day to depart. momondo users have found prices as low as $704 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $877. 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

Best Price Found	$515
Fastest flight time	16h 45m
Direct flights	None

The best one-way flight to Seattle from London Stansted Airport in the past 72 hours is $515. The best round-trip flight deal from London Stansted Airport to Seattle found on momondo in the last 72 hours is $678.

The fastest flight from London Stansted Airport to Seattle takes 16h 45m

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

Search flight deals

Frequently asked questions about flying from London Stansted Airport to Seattle

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 16h 45m.
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

Redmond

Olympia

Federal Way

Kent

Lakewood

Lynnwood

Puyallup

Tukwila

Fife

Cle Elum

Marysville

Lacey

Kirkland

Centralia

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.