Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from London Stansted Airport to Seattle from £429

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Stansted Airport to Seattle departing on 17/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
Voted winner of Europe's Best Travel App 2023

Find the cheapest flights from London Stansted Airport to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
22:45 - 21:00
STN
-
SEA
30h 15m
3 stops
Multiple Airlines Logo
15:40 - 16:50
SEA
-
STN
17h 10m
2 stops
£544Multiple Airlines
Wed, 26 Aug - Mon, 7 Sep
Multiple Airlines Logo
20:45 - 21:04
STN
-
SEA
32h 19m
3 stops
Multiple Airlines Logo
15:40 - 20:25
SEA
-
STN
20h 45m
3 stops
£550Multiple Airlines
Mon, 21 Sep - Fri, 25 Sep
Multiple Airlines Logo
07:05 - 20:40
STN
-
SEA
21h 35m
2 stops
Multiple Airlines Logo
15:40 - 00:20
SEA
-
STN
24h 40m
2 stops
£567Multiple Airlines
Tue, 18 Aug - Mon, 31 Aug
Multiple Airlines Logo
06:30 - 09:40
STN
-
SEA
35h 10m
3 stops
Multiple Airlines Logo
23:25 - 00:10
SEA
-
STN
16h 45m
2 stops
£573Multiple Airlines
Tue, 18 Aug - Tue, 1 Sep
Multiple Airlines Logo
22:05 - 21:04
STN
-
SEA
30h 59m
3 stops
Multiple Airlines Logo
15:40 - 19:15
SEA
-
STN
19h 35m
2 stops
£576Multiple Airlines
Sun, 13 Sep - Mon, 21 Sep
Multiple Airlines Logo
06:35 - 10:07
STN
-
SEA
35h 32m
3 stops
Multiple Airlines Logo
19:00 - 00:50
SEA
-
STN
21h 50m
2 stops
£576Multiple Airlines
Sat, 5 Sep - Fri, 18 Sep
Multiple Airlines Logo
06:30 - 18:45
STN
-
SEA
44h 15m
3 stops
Multiple Airlines Logo
15:40 - 19:55
SEA
-
STN
20h 15m
2 stops
£579Multiple Airlines
Thu, 10 Sep - Sun, 13 Sep
Multiple Airlines Logo
06:35 - 18:45
STN
-
SEA
44h 10m
3 stops
Multiple Airlines Logo
15:40 - 23:20
SEA
-
STN
23h 40m
2 stops
£580Multiple Airlines
Sat, 5 Sep - Sun, 4 Oct
Multiple Airlines Logo
06:30 - 09:40
STN
-
SEA
35h 10m
3 stops
Multiple Airlines Logo
19:00 - 00:20
SEA
-
STN
21h 20m
2 stops
£581Multiple Airlines
Tue, 18 Aug - Mon, 31 Aug
Multiple Airlines Logo
06:35 - 21:00
STN
-
SEA
46h 25m
3 stops
Multiple Airlines Logo
15:40 - 23:20
SEA
-
STN
23h 40m
2 stops
£583Multiple Airlines
Sat, 5 Sep - Sun, 4 Oct

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Turkish Airlines flights from London Stansted Airport to Seattle

Our best Turkish Airlines deals on London Stansted Airport to Seattle flight tickets
Turkish Airlines
17 Jun
STN17:45London Stansted
31h 35m
1 stop
SEA17:20Seattle/Tacoma Intl
17 Jul
SEA19:15Seattle/Tacoma Intl
18h 55m
1 stop
STN22:10London Stansted
£913
Turkish Airlines
17 Jun
STN10:50London Stansted
38h 30m
1 stop
SEA17:20Seattle/Tacoma Intl
17 Jul
SEA19:15Seattle/Tacoma Intl
18h 55m
1 stop
STN22:10London Stansted
£960
Turkish Airlines
13 Jun
STN17:45London Stansted
31h 30m
1 stop
SEA17:15Seattle/Tacoma Intl
27 Jun
SEA19:15Seattle/Tacoma Intl
30h 40m
1 stop
STN09:55London Stansted
£1,025

momondo Fare Finder

 
Customise your flight search to find flights from London Stansted Airport to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 8 June 2026.
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 return flight

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 26/8

22:45-21:00

3 stops30h 15m

Seattle/Tacoma Intl

Mon 7/9

15:40-16:50

2 stops17h 10m

£544

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 21/9

20:45-21:04

3 stops32h 19m

Seattle/Tacoma Intl

Fri 25/9

15:40-20:25

3 stops20h 45m

£550
Fastest return journey

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 18/8

07:05-20:40

2 stops21h 35m

Seattle/Tacoma Intl

Mon 31/8

15:40-00:20

2 stops24h 40m

£567

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 18/8

06:30-09:40

3 stops35h 10m

Seattle/Tacoma Intl

Tue 1/9

23:25-00:10

2 stops16h 45m

£573

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sun 13/9

22:05-21:04

3 stops30h 59m

Seattle/Tacoma Intl

Mon 21/9

15:40-19:15

2 stops19h 35m

£576

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 5/9

06:35-10:07

3 stops35h 32m

Seattle/Tacoma Intl

Fri 18/9

19:00-00:50

2 stops21h 50m

£576

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 10/9

06:30-18:45

3 stops44h 15m

Seattle/Tacoma Intl

Sun 13/9

15:40-19:55

2 stops20h 15m

£579

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 5/9

06:35-18:45

3 stops44h 10m

Seattle/Tacoma Intl

Sun 4/10

15:40-23:20

2 stops23h 40m

£580

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 18/8

06:30-09:40

3 stops35h 10m

Seattle/Tacoma Intl

Mon 31/8

19:00-00:20

2 stops21h 20m

£581

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 5/9

06:35-21:00

3 stops46h 25m

Seattle/Tacoma Intl

Sun 4/10

15:40-23:20

2 stops23h 40m

£583

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Seattle from

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, Thursday is the cheapest day to fly to Seattle from London Stansted Airport. The lowest ticket price found for a Thursday departure recently was £614. 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 £688.

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 at midday. momondo users have found flights departing from London Stansted Airport to Seattle at midday for as low as £613. 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 £653.

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

Fastest flight time

16h 55m

Direct flights

None
The fastest flight from London Stansted Airport to Seattle takes 16h 55m
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?

    A flight from London Stansted to Seattle/Tacoma Intl will travel around 4769.5 mi. Flights usually cover this in 16h 55m, 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.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Fife
Kirkland
Ashford
SeaTac
Tukwila

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.

An easier way to manage your Seattle trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 8/7
Wed 15/7
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States