How do I get Price Alerts for flights from Seattle to London Stansted Airport?

Price Alerts will notify you by email when the price for flights to London Stansted Airport from Seattle decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

How can I save money on flights from Seattle to London Stansted Airport with momondo?

Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore” . Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

How does momondo find its flight prices?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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

Prices for flights from Seattle/Tacoma Intl Airport to London Stansted Airport are updated daily.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to London Stansted Airport.

What documentation or ID do you need to fly to London Stansted Airport?

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

£214 Cheap Flights from Seattle to London Stansted Airport in 2025

1 adult

0 bags

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Find the cheapest flights from Seattle to London

Round-trip

One-way

Last minute

Cheap return flights

19:35 - 22:55SEA-STN

19h 20m1 stop

12:15 - 17:50STN-SEA

13h 35m1 stop

£360

Find Deal

Tue, 9 Sep - Tue, 16 Sep

07:20 - 12:45SEA-STN

21h 25m2 stops

22:00 - 20:45STN-SEA

30h 45m2 stops

£366

Find Deal

Wed, 13 Aug - Wed, 20 Aug

14:35 - 15:05SEA-STN

16h 30m2 stops

06:30 - 17:00STN-SEA

18h 30m2 stops

£366

Find Deal

Wed, 5 Nov - Mon, 10 Nov

14:35 - 21:20SEA-STN

22h 45m2 stops

06:30 - 17:00STN-SEA

18h 30m2 stops

£375

Find Deal

Mon, 24 Nov - Sun, 7 Dec

07:15 - 16:20SEA-STN

25h 05m2 stops

21:25 - 18:36STN-SEA

29h 11m2 stops

£376

Find Deal

Wed, 10 Sep - Tue, 16 Sep

14:35 - 21:20SEA-STN

22h 45m2 stops

06:30 - 17:00STN-SEA

18h 30m2 stops

£376

Find Deal

Mon, 24 Nov - Sun, 7 Dec

07:20 - 12:45SEA-STN

21h 25m2 stops

22:00 - 20:45STN-SEA

30h 45m2 stops

£377

Find Deal

Wed, 13 Aug - Wed, 20 Aug

19:35 - 18:20SEA-STN

14h 45m1 stop

11:15 - 17:50STN-SEA

14h 35m1 stop

£383

Find Deal

Mon, 8 Sep - Tue, 16 Sep

15:45 - 22:55SEA-STN

23h 10m2 stops

11:15 - 17:50STN-SEA

14h 35m2 stops

£384

Find Deal

Tue, 26 Aug - Tue, 2 Sep

18:50 - 19:00SEA-STN

16h 10m1 stop

19:50 - 16:59STN-SEA

29h 09m1 stop

£441Lufthansa

Find Deal

Wed, 24 Sep - Tue, 30 Sep

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Tue 9/9

19:35-22:55

1 stop19h 20m

London Stansted

Tue 16/9

12:15-17:50

1 stop13h 35m

£360

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 13/8

07:20-12:45

2 stops21h 25m

London Stansted

Wed 20/8

22:00-20:45

2 stops30h 45m

£366

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 5/11

14:35-15:05

2 stops16h 30m

London Stansted

Mon 10/11

06:30-17:00

2 stops18h 30m

£366

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Mon 24/11

14:35-21:20

2 stops22h 45m

London Stansted

Sun 7/12

06:30-17:00

2 stops18h 30m

£375

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 10/9

07:15-16:20

2 stops25h 05m

London Stansted

Tue 16/9

21:25-18:36

2 stops29h 11m

£376

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Mon 24/11

14:35-21:20

2 stops22h 45m

London Stansted

Sun 7/12

06:30-17:00

2 stops18h 30m

£376

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 13/8

07:20-12:45

2 stops21h 25m

London Stansted

Wed 20/8

22:00-20:45

2 stops30h 45m

£377

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Mon 8/9

19:35-18:20

1 stop14h 45m

London Stansted

Tue 16/9

11:15-17:50

1 stop14h 35m

£383

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Tue 26/8

15:45-22:55

2 stops23h 10m

London Stansted

Tue 2/9

11:15-17:50

2 stops14h 35m

£384

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 24/9

18:50-19:00

1 stop16h 10m

London Stansted

Tue 30/9

19:50-16:59

1 stop29h 09m

£441

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

When to book flights from Seattle to London Stansted Airport

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

Estimated return price

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

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

Best price found	£214
Fastest flight time	12h 10m
Direct flights	None

The best one-way flight to London Stansted Airport from Seattle in the past 72 hours is £214. The best return flight deal from Seattle to London Stansted Airport found on momondo in the last 72 hours is £360.

The fastest flight from Seattle to London Stansted Airport takes 12h 10m

There are no direct flights from Seattle to London Stansted Airport. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - London Stansted Airport.

Search flight deals

How far is Seattle/Tacoma Intl to London Stansted by plane?
The straight-line distance from Seattle/Tacoma Intl to London Stansted is 4769.5 mi. 12h 30m is a normal flight duration for this route.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to London Stansted Airport?
Prices for flights from Seattle/Tacoma Intl Airport to London Stansted Airport are updated daily.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to London Stansted Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to London Stansted Airport.
What documentation or ID do you need to fly to London Stansted Airport?
The required travel and health documents for your London Stansted 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 London Stansted Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

How do I get Price Alerts for flights from Seattle to London Stansted Airport?
Price Alerts will notify you by email when the price for flights to London Stansted Airport from Seattle decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.
How can I save money on flights from Seattle to London Stansted Airport with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Eastbourne

Milton Keynes

Luton

Slough

Southend-on-Sea

Maidstone

Canterbury

Gatwick

Ipswich

Ilford

Dartford

Guildford

Colchester

Worthing

Hounslow

Dover

Winchester

Margate

Chelmsford

Bedford

Why use momondo?

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

Finding the right flight to London 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 London quick and easy, saving you time and money.

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

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

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

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

Yes. momondo can track prices for Seattle to London 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.