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Cheap flights from London Stansted Airport to Seattle from £427

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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
9 Jul — 16 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap 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 9 June 2026.

Wed 26/822:45
STN
-
SEA
3 stops30h 15m
Multiple Airlines
Mon 7/915:40
SEA
-
STN
2 stops17h 10m
Multiple Airlines
Deal found 8/6£544
Mon 21/920:45
STN
-
SEA
3 stops32h 19m
Multiple Airlines
Fri 25/915:40
SEA
-
STN
3 stops20h 45m
Multiple Airlines
Deal found 4/6£550
Tue 18/807:05
STN
-
SEA
2 stops21h 35m
Multiple Airlines
Mon 31/815:40
SEA
-
STN
2 stops24h 40m
Multiple Airlines
Deal found 4/6£567
Tue 18/806:30
STN
-
SEA
3 stops35h 10m
Multiple Airlines
Tue 1/923:25
SEA
-
STN
2 stops16h 45m
Multiple Airlines
Deal found 6/6£573
Sun 13/922:05
STN
-
SEA
3 stops30h 59m
Multiple Airlines
Mon 21/915:40
SEA
-
STN
2 stops19h 35m
Multiple Airlines
Deal found 7/6£576
Sat 5/906:35
STN
-
SEA
3 stops35h 32m
Multiple Airlines
Fri 18/919:00
SEA
-
STN
2 stops21h 50m
Multiple Airlines
Deal found 4/6£576
Thu 10/906:30
STN
-
SEA
3 stops44h 15m
Multiple Airlines
Sun 13/915:40
SEA
-
STN
2 stops20h 15m
Multiple Airlines
Deal found 7/6£579
Sat 5/906:35
STN
-
SEA
3 stops44h 10m
Multiple Airlines
Sun 4/1015:40
SEA
-
STN
2 stops23h 40m
Multiple Airlines
Deal found 5/6£580
Fri 21/806:35
STN
-
SEA
3 stops44h 10m
Multiple Airlines
Fri 11/915:40
SEA
-
STN
2 stops21h 30m
Multiple Airlines
Deal found 6/6£584

Find 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 9 June 2026.

Round-trip from

£544

One-way from

£427

Popular in

July

Cheapest in

February

Average price

£627
26/8-7/9
  • 26/8-7/9
  • 5 total stops
  • 47h 25m total
  • London to Seattle
Search Deals
6/7
  • 6/7
  • 3 total stops
  • 42h 55m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£56 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

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 9 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

Fri 11/9

17:35-10:40

1 stop25h 05m

Seattle/Tacoma Intl

Sat 26/9

19:15-09:55

1 stop30h 40m

£822

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 21/9

10:50-17:20

1 stop38h 30m

Seattle/Tacoma Intl

Fri 25/9

19:15-09:55

1 stop30h 40m

£868
Fastest return journey

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sun 23/8

06:40-17:20

1 stop18h 40m

Seattle/Tacoma Intl

Sun 13/9

19:15-22:10

1 stop18h 55m

£978

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 7/9

10:50-17:20

1 stop38h 30m

Seattle/Tacoma Intl

Wed 16/9

13:16-09:55

2 stops36h 39m

£1,040

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 25/8

06:55-17:20

1 stop18h 25m

Seattle/Tacoma Intl

Thu 10/9

13:16-09:55

2 stops36h 39m

£1,102

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 22/7

17:45-17:20

1 stop31h 35m

Seattle/Tacoma Intl

Wed 29/7

19:15-16:40

1 stop37h 25m

£1,112

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 30/6

06:55-17:20

1 stop18h 25m

Seattle/Tacoma Intl

Thu 30/7

08:45-16:40

2 stops23h 55m

£1,132

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 19/6

17:35-10:40

1 stop25h 05m

Seattle/Tacoma Intl

Fri 3/7

08:45-22:10

2 stops29h 25m

£1,187
Cheapest one-way

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 14/8

17:55-17:10

3 stops31h 15m

£453

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 5/8

22:00-17:10

1 stop27h 10m

£684

Flights are sorted by cheapest return flights first.

Deals found on 8/6

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

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.

  • How long is the flight from London Stansted Airport to Seattle?

    For as low as £822, Turkish Airlines can have you in Seattle from London Stansted Airport in 25h 05m. The distance from London Stansted Airport to Seattle is about 4778 mi.

  • 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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