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.

£280 Cheap Flights from Seattle to London Stansted Airport in 2026

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Find the cheapest flights from Seattle to London

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

15:40 - 22:25

SEA

STN

22h 45m

2 stops

06:30 - 09:40

STN

SEA

35h 10m

3 stops

£414Multiple Airlines

Mon, 20 Apr - Mon, 27 Apr

15:40 - 22:35

SEA

STN

22h 55m

2 stops

06:30 - 09:35

STN

SEA

35h 05m

3 stops

£415Multiple Airlines

Thu, 16 Apr - Wed, 29 Apr

19:00 - 21:10

SEA

STN

18h 10m

2 stops

15:10 - 17:55

STN

SEA

34h 45m

2 stops

£422Multiple Airlines

Fri, 17 Apr - Fri, 24 Apr

19:00 - 23:50

SEA

STN

20h 50m

2 stops

06:30 - 09:35

STN

SEA

35h 05m

3 stops

£424Multiple Airlines

Sun, 5 Apr - Tue, 14 Apr

19:00 - 22:50

SEA

STN

19h 50m

2 stops

22:45 - 09:35

STN

SEA

42h 50m

3 stops

£430Multiple Airlines

Mon, 6 Apr - Mon, 13 Apr

19:00 - 22:50

SEA

STN

19h 50m

2 stops

22:45 - 09:35

STN

SEA

42h 50m

3 stops

£431Multiple Airlines

Mon, 6 Apr - Mon, 13 Apr

19:00 - 00:30

SEA

STN

21h 30m

3 stops

06:30 - 09:35

STN

SEA

35h 05m

3 stops

£435Multiple Airlines

Thu, 16 Apr - Wed, 29 Apr

19:00 - 23:15

SEA

STN

20h 15m

2 stops

06:30 - 09:35

STN

SEA

35h 05m

3 stops

£437Multiple Airlines

Sat, 25 Apr - Wed, 29 Apr

15:40 - 22:25

SEA

STN

22h 45m

2 stops

06:30 - 21:53

STN

SEA

23h 23m

2 stops

£442Multiple Airlines

Mon, 20 Apr - Wed, 29 Apr

19:00 - 22:40

SEA

STN

19h 40m

2 stops

06:30 - 14:19

STN

SEA

39h 49m

3 stops

£443Multiple Airlines

Tue, 7 Apr - Tue, 14 Apr

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

Mon 20/4

15:40-22:25

2 stops22h 45m

London Stansted

Mon 27/4

06:30-09:40

3 stops35h 10m

£414

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Thu 16/4

15:40-22:35

2 stops22h 55m

London Stansted

Wed 29/4

06:30-09:35

3 stops35h 05m

£415

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Fri 17/4

19:00-21:10

2 stops18h 10m

London Stansted

Fri 24/4

15:10-17:55

2 stops34h 45m

£422

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Sun 5/4

19:00-23:50

2 stops20h 50m

London Stansted

Tue 14/4

06:30-09:35

3 stops35h 05m

£424

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Mon 6/4

19:00-22:50

2 stops19h 50m

London Stansted

Mon 13/4

22:45-09:35

3 stops42h 50m

£430

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Mon 6/4

19:00-22:50

2 stops19h 50m

London Stansted

Mon 13/4

22:45-09:35

3 stops42h 50m

£431

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Thu 16/4

19:00-00:30

3 stops21h 30m

London Stansted

Wed 29/4

06:30-09:35

3 stops35h 05m

£435

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Sat 25/4

19:00-23:15

2 stops20h 15m

London Stansted

Wed 29/4

06:30-09:35

3 stops35h 05m

£437

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Mon 20/4

15:40-22:25

2 stops22h 45m

London Stansted

Wed 29/4

06:30-21:53

2 stops23h 23m

£442

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Tue 7/4

19:00-22:40

2 stops19h 40m

London Stansted

Tue 14/4

06:30-14:19

3 stops39h 49m

£443

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

Fastest flight time	12h 45m
Direct flights	None

The fastest flight from Seattle to London Stansted Airport takes 12h 45m

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. 12h 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

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Southend-on-Sea

Ipswich

Canterbury

Ilford

Guildford

Chelmsford

Wembley

Hayes

Dover

Folkestone

Worthing

Colchester

Bedford

Ramsgate

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.