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.

£199 Cheap Flights from Seattle to London Stansted Airport in 2025/26

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Find the cheapest flights from Seattle to London

Round-trip

One-way

Last minute

Cheap return flights

15:45 - 16:20SEA-STN

16h 35m2 stops

08:15 - 17:50STN-SEA

17h 35m2 stops

£377Multiple Airlines

Find Deal

Wed, 15 Oct - Wed, 22 Oct

15:45 - 22:30SEA-STN

22h 45m2 stops

09:05 - 17:50STN-SEA

16h 45m2 stops

£379Multiple Airlines

Find Deal

Wed, 15 Oct - Wed, 22 Oct

15:45 - 18:20SEA-STN

18h 35m2 stops

08:15 - 20:40STN-SEA

20h 25m2 stops

£380Multiple Airlines

Find Deal

Mon, 6 Oct - Mon, 13 Oct

10:00 - 14:20SEA-STN

20h 20m2 stops

22:35 - 14:16STN-SEA

23h 41m2 stops

£381Multiple Airlines

Find Deal

Tue, 14 Oct - Tue, 21 Oct

15:45 - 18:00SEA-STN

18h 15m2 stops

08:15 - 17:50STN-SEA

17h 35m2 stops

£384Multiple Airlines

Find Deal

Sun, 5 Oct - Thu, 9 Oct

15:10 - 21:05SEA-STN

21h 55m2 stops

21:45 - 22:06STN-SEA

32h 21m3 stops

£385Multiple Airlines

Find Deal

Wed, 3 Dec - Tue, 9 Dec

05:50 - 17:50SEA-STN

28h 00m3 stops

21:45 - 19:16STN-SEA

29h 31m3 stops

£388Multiple Airlines

Find Deal

Wed, 3 Dec - Tue, 9 Dec

20:05 - 17:50SEA-STN

13h 45m1 stop

06:30 - 18:20STN-SEA

19h 50m1 stop

£393Multiple Airlines

Find Deal

Wed, 19 Nov - Wed, 3 Dec

20:05 - 17:50SEA-STN

13h 45m1 stop

06:30 - 18:20STN-SEA

19h 50m1 stop

£395Multiple Airlines

Find Deal

Wed, 19 Nov - Wed, 26 Nov

05:50 - 11:05SEA-STN

21h 15m3 stops

20:00 - 19:16STN-SEA

31h 16m3 stops

£396Multiple Airlines

Find Deal

Sun, 9 Nov - Sat, 15 Nov

Lufthansa flights from Seattle to London Stansted Airport

Our best Lufthansa deals on Seattle to London Stansted Airport flight tickets

Lufthansa

24 Sept

SEA18:50Seattle/Tacoma Intl

16h 10m

1 stop

STN19:00London Stansted

3 Oct

STN19:50London Stansted

24h 05m

2 stops

SEA11:55Seattle/Tacoma Intl

£480

Find similar

Lufthansa

21 Sept

SEA18:50Seattle/Tacoma Intl

16h 10m

1 stop

STN19:00London Stansted

29 Sept

STN19:50London Stansted

24h 05m

2 stops

SEA11:55Seattle/Tacoma Intl

£604

Find similar

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

Wed 15/10

15:45-16:20

2 stops16h 35m

London Stansted

Wed 22/10

08:15-17:50

2 stops17h 35m

£377

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 15/10

15:45-22:30

2 stops22h 45m

London Stansted

Wed 22/10

09:05-17:50

2 stops16h 45m

£379

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Mon 6/10

15:45-18:20

2 stops18h 35m

London Stansted

Mon 13/10

08:15-20:40

2 stops20h 25m

£380

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Tue 14/10

10:00-14:20

2 stops20h 20m

London Stansted

Tue 21/10

22:35-14:16

2 stops23h 41m

£381

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Sun 5/10

15:45-18:00

2 stops18h 15m

London Stansted

Thu 9/10

08:15-17:50

2 stops17h 35m

£384

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 3/12

15:10-21:05

2 stops21h 55m

London Stansted

Tue 9/12

21:45-22:06

3 stops32h 21m

£385

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 3/12

05:50-17:50

3 stops28h 00m

London Stansted

Tue 9/12

21:45-19:16

3 stops29h 31m

£388

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 19/11

20:05-17:50

1 stop13h 45m

London Stansted

Wed 3/12

06:30-18:20

1 stop19h 50m

£393

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 19/11

20:05-17:50

1 stop13h 45m

London Stansted

Wed 26/11

06:30-18:20

1 stop19h 50m

£395

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Sun 9/11

05:50-11:05

3 stops21h 15m

London Stansted

Sat 15/11

20:00-19:16

3 stops31h 16m

£396

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

Direct flights	None

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

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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. 13h 45m 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

Luton

Milton Keynes

Maidstone

Gatwick

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Colchester

Worthing

Chelmsford

Dover

Hayes

Dartford

Winchester

Hounslow

Stansted

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.