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.

£409 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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06:30 - 17:00STN-SEA

18h 30m2 stops

14:35 - 21:20SEA-STN

22h 45m2 stops

£444Multiple Airlines

Find Deal

Fri, 21 Nov - Fri, 28 Nov

05:55 - 17:00STN-SEA

19h 05m2 stops

14:35 - 23:10SEA-STN

24h 35m2 stops

£453Multiple Airlines

Find Deal

Thu, 6 Nov - Thu, 13 Nov

10:40 - 13:20STN-SEA

34h 40m2 stops

14:00 - 20:00SEA-STN

22h 00m2 stops

£479Multiple Airlines

Find Deal

Sat, 8 Nov - Sat, 15 Nov

06:30 - 18:20STN-SEA

19h 50m1 stop

20:05 - 16:35SEA-STN

12h 30m1 stop

£537Multiple Airlines

Find Deal

Fri, 21 Nov - Sun, 30 Nov

06:30 - 18:20STN-SEA

19h 50m1 stop

20:05 - 18:20SEA-STN

14h 15m1 stop

£539Multiple Airlines

Find Deal

Fri, 28 Nov - Mon, 1 Dec

11:15 - 17:50STN-SEA

14h 35m1 stop

20:05 - 16:35SEA-STN

12h 30m1 stop

£561Multiple Airlines

Find Deal

Fri, 24 Oct - Sun, 2 Nov

06:30 - 19:20STN-SEA

19h 50m1 stop

20:05 - 18:20SEA-STN

14h 15m1 stop

£583Multiple Airlines

Find Deal

Fri, 31 Oct - Fri, 14 Nov

17:45 - 13:20STN-SEA

27h 35m3 stops

14:00 - 16:40SEA-STN

18h 40m2 stops

£610Multiple Airlines

Find Deal

Sat, 15 Nov - Sat, 29 Nov

06:35 - 17:50STN-SEA

19h 15m1 stop

21:05 - 20:05SEA-STN

16h 00m1 stop

£660Multiple Airlines

Find Deal

Sat, 18 Oct - Fri, 31 Oct

13:35 - 12:10STN-SEA

30h 35m2 stops

14:00 - 22:05SEA-STN

24h 05m2 stops

£678Multiple Airlines

Find Deal

Thu, 18 Dec - Mon, 5 Jan

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 21/11

06:30-17:00

2 stops18h 30m

Seattle/Tacoma Intl

Fri 28/11

14:35-21:20

2 stops22h 45m

£444

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 6/11

05:55-17:00

2 stops19h 05m

Seattle/Tacoma Intl

Thu 13/11

14:35-23:10

2 stops24h 35m

£453

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 8/11

10:40-13:20

2 stops34h 40m

Seattle/Tacoma Intl

Sat 15/11

14:00-20:00

2 stops22h 00m

£479

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 21/11

06:30-18:20

1 stop19h 50m

Seattle/Tacoma Intl

Sun 30/11

20:05-16:35

1 stop12h 30m

£537

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 28/11

06:30-18:20

1 stop19h 50m

Seattle/Tacoma Intl

Mon 1/12

20:05-18:20

1 stop14h 15m

£539

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 24/10

11:15-17:50

1 stop14h 35m

Seattle/Tacoma Intl

Sun 2/11

20:05-16:35

1 stop12h 30m

£561

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 31/10

06:30-19:20

1 stop19h 50m

Seattle/Tacoma Intl

Fri 14/11

20:05-18:20

1 stop14h 15m

£583

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 15/11

17:45-13:20

3 stops27h 35m

Seattle/Tacoma Intl

Sat 29/11

14:00-16:40

2 stops18h 40m

£610

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 18/10

06:35-17:50

1 stop19h 15m

Seattle/Tacoma Intl

Fri 31/10

21:05-20:05

1 stop16h 00m

£660

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 18/12

13:35-12:10

2 stops30h 35m

Seattle/Tacoma Intl

Mon 5/1

14:00-22:05

2 stops24h 05m

£678

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 £591. 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 £691.

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 in the evening. momondo users have found flights departing from London Stansted Airport to Seattle in the evening for as low as £525. 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 £628.

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

Direct flights	None

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 14h 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

Tukwila

Renton

SeaTac

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.