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Cheap flights from London Stansted Airport to Seattle from £392

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
7 Sep — 14 Sep1
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 8 August 2026.

Tue 13/1017:20 -
2 stops30h 20m
Wed 21/1017:40 -
2 stops22h 30m
Deal found 4/8£458
Wed 14/1021:20 -
2 stops26h 40m
Wed 21/1017:40 -
2 stops22h 30m
Deal found 7/8£460
Thu 3/917:35 -
2 stops26h 10m
Tue 8/919:00 -
2 stops21h 10m
Deal found 3/8£464
Fri 4/906:40 -
2 stops22h 00m
Fri 11/915:40 -
2 stops20h 50m
Deal found 3/8£475
Tue 8/910:45 -
2 stops33h 00m
Tue 15/919:00 -
2 stops21h 10m
Deal found 3/8£487
Mon 31/819:15 -
2 stops33h 25m
Tue 8/919:00 -
2 stops21h 10m
Deal found 3/8£488
Fri 4/906:40 -
2 stops22h 00m
Sun 20/915:40 -
2 stops17h 35m
Deal found 3/8£488
Sat 19/913:55 -
2 stops31h 50m
Sat 3/1015:55 -
2 stops18h 35m
Deal found 5/8£494

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 8 August 2026.

Round-trip from

£458

One-way from

£392

Popular in

December

Cheapest in

February

Average price

£621
13/10-21/10
  • 13/10-21/10
  • 4 total stops
  • 52h 50m total
  • London to Seattle
Search Deals
22/9
  • 22/9
  • 2 total stops
  • 20h 15m total
  • London to Seattle
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 8 August 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 London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Thu 12/11

17:20-17:10

1 stop31h 50m

Seattle/Tacoma Intl

Wed 25/11

10:50-09:55

2 stops39h 05m

£748
Fastest return journey

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Sun 20/9

17:35-22:45

2 stops37h 10m

Seattle/Tacoma Intl

Fri 25/9

19:15-09:55

1 stop30h 40m

£750

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Thu 5/11

10:55-22:59

2 stops44h 04m

Seattle/Tacoma Intl

Thu 19/11

13:16-09:55

2 stops36h 39m

£756

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Sat 26/9

17:45-22:56

2 stops37h 11m

Seattle/Tacoma Intl

Thu 22/10

10:42-09:55

2 stops39h 13m

£763

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Wed 7/10

17:45-17:20

1 stop31h 35m

Seattle/Tacoma Intl

Sun 11/10

19:15-16:40

1 stop37h 25m

£794

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Mon 21/9

10:50-17:20

1 stop38h 30m

Seattle/Tacoma Intl

Fri 25/9

10:42-09:55

2 stops39h 13m

£866

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Mon 14/9

10:50-17:20

1 stop38h 30m

Seattle/Tacoma Intl

Mon 21/9

19:15-09:55

1 stop30h 40m

£914
Cheapest one-way

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Thu 24/9

17:35-22:56

2 stops37h 21m

£718

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Wed 23/9

17:45-22:56

2 stops37h 11m

£719

LondonSeattle

STN London Stansted - SEA Seattle/Tacoma Intl

STNSEA

London Stansted

Thu 1/10

17:35-22:56

2 stops37h 21m

£721

Flights are sorted by cheapest return flights first.

Deals found on 5/8

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 £748, Turkish Airlines can have you in Seattle from London Stansted Airport in 31h 50m. 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
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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