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Cheap flights from London Stansted Airport to Seattle from £361

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/5. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
17 Feb — 24 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Stansted to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Stansted (STN) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 January 2026.

Round-trip from

£400

One-way from

£361

Popular in

July

Cheapest in

February

Average price

£481
4/3-11/3
  • 4/3-11/3
  • 4 total stops
  • 41h 00m total
  • London to Seattle
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31/5
  • 31/5
  • 2 total stops
  • 18h 05m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£60 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
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Average for round-trip flights in January 2026
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Find flight deals from Stansted to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Stansted to Seattle
Explore the most affordable flight options available from Stansted to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 January 2026.

Tue 27/106:30
STN
-
SEA
2 stops18h 30m
Multiple Airlines
Fri 30/114:35
SEA
-
STN
2 stops19h 45m
Multiple Airlines
Deal found 18/1£397
Wed 4/306:30
STN
-
SEA
2 stops18h 30m
Multiple Airlines
Wed 11/315:35
SEA
-
STN
2 stops22h 30m
Multiple Airlines
Deal found 18/1£400
Wed 25/308:30
STN
-
SEA
2 stops16h 30m
Multiple Airlines
Thu 2/415:40
SEA
-
STN
2 stops19h 55m
Multiple Airlines
Deal found 18/1£435
Sun 1/310:15
STN
-
SEA
1 stop16h 05m
Multiple Airlines
Sun 15/321:05
SEA
-
STN
1 stop17h 15m
Multiple Airlines
Deal found 18/1£466
Sun 1/223:20
STN
-
SEA
3 stops25h 40m
Multiple Airlines
Fri 6/214:35
SEA
-
STN
2 stops22h 10m
Multiple Airlines
Deal found 16/1£496
Wed 11/318:45
STN
-
SEA
2 stops31h 33m
Multiple Airlines
Wed 25/321:05
SEA
-
STN
1 stop17h 00m
Multiple Airlines
Deal found 18/1£541
Fri 11/906:40
STN
-
SEA
2 stops17h 20m
Multiple Airlines
Mon 21/918:55
SEA
-
STN
1 stop11h 45m
Multiple Airlines
Deal found 16/1£548
Mon 26/115:40
STN
-
SEA
3 stops33h 20m
Multiple Airlines
Mon 9/214:35
SEA
-
STN
2 stops15h 55m
Multiple Airlines
Deal found 17/1£554

Cheapflights Fare Finder

 
Customise your flight search to find flights from Stansted 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, Cheapflights users made 858,174 searches. Data last updated 18 January 2026.
Use the filters below to find and compare flights from London Stansted Airport to Seattle that are best for you.

Fly from

Stansted

Fly to

Seattle

Route

Depart

Return

Price

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sun 1/3

08:15-12:10

2 stops35h 55m

Seattle/Tacoma Intl

Sun 15/3

16:10-23:25

2 stops24h 15m

£498

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 11/3

18:45-19:18

2 stops31h 33m

Seattle/Tacoma Intl

Wed 25/3

21:05-21:05

1 stop17h 00m

£541

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 1/5

08:20-17:55

2 stops17h 35m

Seattle/Tacoma Intl

Sat 9/5

19:00-21:35

2 stops18h 35m

£619

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sun 15/2

23:20-15:40

3 stops24h 20m

Seattle/Tacoma Intl

Wed 11/3

16:10-00:15

2 stops25h 05m

£676

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 23/5

20:55-16:00

2 stops27h 05m

Seattle/Tacoma Intl

Fri 29/5

15:40-16:05

2 stops16h 25m

£677

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 13/4

10:50-17:15

1 stop38h 25m

Seattle/Tacoma Intl

Mon 27/4

19:10-09:55

1 stop30h 45m

£693

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 22/4

10:50-17:15

1 stop38h 25m

Seattle/Tacoma Intl

Wed 6/5

19:10-09:55

1 stop30h 45m

£696

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 4/5

10:50-17:15

1 stop38h 25m

Seattle/Tacoma Intl

Fri 8/5

19:10-22:10

1 stop19h 00m

£703

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 15/6

10:50-17:15

1 stop38h 25m

Seattle/Tacoma Intl

Wed 1/7

19:10-09:55

1 stop30h 45m

£712

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 17/6

06:15-17:15

1 stop19h 00m

Seattle/Tacoma Intl

Wed 1/7

19:10-22:10

1 stop19h 00m

£712

Flights are sorted by cheapest return flights first.

Deals found on 17/1

Showing 1-10 of 22 results
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Best time to book a flight from Stansted to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Stansted with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Stansted to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from London Stansted?

    Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from London Stansted. On average, Seattle/Tacoma Intl has 0 inbound flights from London Stansted per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • Can I find deals for flights from Stansted to Seattle that include hotel bookings?

    Yes. In addition to deals on Stansted to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Stansted to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stansted to Seattle.

  • Can I find deals for business class flights from Stansted to Seattle?

    Yes. Cheapflights offers flight deals from Stansted to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Federal Way
SeaTac

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How does Cheapflights help users find flights from Stansted to Seattle?

Cheapflights helps you search for flights from Stansted to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Stansted to Seattle?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Stansted.

Can Cheapflights find flights from Stansted to Seattle with no change fees?

Certainly. Search results for flights to Seattle from Stansted shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Stansted to Seattle become cheaper?

Yes, Cheapflights offers price alerts on Stansted to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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