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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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
27 Aug — 3 Sep1
1 adult

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 22 August 2025.

Round-trip from

£486

One-way from

£392

Popular in

August

Cheapest in

January

Average price

£700
5/10-12/10
  • 5/10-12/10
  • 4 total stops
  • 35h 50m total
  • London to Seattle
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5/9
  • 5/9
  • 2 total stops
  • 21h 25m 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 (£10 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Find flight deals from Stansted to Seattle

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 22 August 2025.

Sun 5/1008:15STN - SEA
2 stops17h 35mMultiple Airlines
Sun 12/1015:45SEA - STN
2 stops18h 15mMultiple Airlines
Deal found 21/8£486
Mon 1/908:00STN - SEA
2 stops35h 25mMultiple Airlines
Mon 8/915:45SEA - STN
2 stops16h 30mMultiple Airlines
Deal found 20/8£496
Wed 3/907:05STN - SEA
2 stops21h 35mMultiple Airlines
Wed 10/915:45SEA - STN
2 stops20h 05mMultiple Airlines
Deal found 20/8£532
Tue 2/912:15STN - SEA
1 stop13h 35mMultiple Airlines
Sat 6/919:35SEA - STN
1 stop20h 45mMultiple Airlines
Deal found 20/8£545
Sat 4/1011:05STN - SEA
1 stop14h 45mMultiple Airlines
Sat 11/1019:35SEA - STN
1 stop20h 45mMultiple Airlines
Deal found 20/8£588
Wed 3/900:20STN - SEA
3 stops28h 20mMultiple Airlines
Thu 11/915:45SEA - STN
2 stops18h 15mMultiple Airlines
Deal found 21/8£609
Mon 29/906:10STN - SEA
2 stops22h 30mMultiple Airlines
Mon 13/1008:40SEA - STN
2 stops21h 40mMultiple Airlines
Deal found 21/8£655

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 22 August 2025.
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 5/10

08:15-17:50

2 stops17h 35m

Seattle/Tacoma Intl

Sun 12/10

15:45-18:00

2 stops18h 15m

£486

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 1/9

08:00-11:25

2 stops35h 25m

Seattle/Tacoma Intl

Mon 8/9

15:45-16:15

2 stops16h 30m

£496

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 3/9

07:05-20:40

2 stops21h 35m

Seattle/Tacoma Intl

Wed 10/9

15:45-19:50

2 stops20h 05m

£532

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 2/9

12:15-17:50

1 stop13h 35m

Seattle/Tacoma Intl

Sat 6/9

19:35-00:20

1 stop20h 45m

£545

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 4/10

11:05-17:50

1 stop14h 45m

Seattle/Tacoma Intl

Sat 11/10

19:35-00:20

1 stop20h 45m

£588

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 3/9

00:20-20:40

3 stops28h 20m

Seattle/Tacoma Intl

Thu 11/9

15:45-18:00

2 stops18h 15m

£609

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 1/9

06:25-17:50

1 stop19h 25m

Seattle/Tacoma Intl

Tue 9/9

19:35-22:55

1 stop19h 20m

£612

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 29/9

06:10-20:40

2 stops22h 30m

Seattle/Tacoma Intl

Mon 13/10

08:40-14:20

2 stops21h 40m

£655

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 5/9

07:15-20:40

2 stops21h 25m

£392

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sun 26/10

21:40-10:35

2 stops43h 55m

£394

Flights are sorted by cheapest return flights first.

Deals found on 20/8

Showing 1-10 of 20 results
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.

  • 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.

  • What is the cheapest month to book a flight from London Stansted Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from London Stansted Airport to Seattle (average of £622). Flying from London Stansted Airport to Seattle in July is currently the most expensive (average of £946). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell
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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