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Cheap flights from London Stansted Airport to Seattle from £368

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 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
18 Oct — 25 Oct1
1 adult
1 adult, Economy

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 September 2025.

Round-trip from

£459

One-way from

£368

Popular in

July

Cheapest in

January

Average price

£496
31/10-7/11
  • 31/10-7/11
  • 4 total stops
  • 33h 20m total
  • London to Seattle
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15/10
  • 15/10
  • 2 total stops
  • 35h 20m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£61 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 September 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 18 September 2025.

Wed 8/1008:20STN - SEA
2 stops35h 35mMultiple Airlines
Mon 13/1014:20SEA - STN
2 stops17h 45mMultiple Airlines
Deal found 15/9£451
Thu 30/1006:15STN - SEA
2 stops18h 45mMultiple Airlines
Thu 6/1114:35SEA - STN
2 stops18h 55mMultiple Airlines
Deal found 15/9£453
Fri 31/1008:20STN - SEA
2 stops16h 40mMultiple Airlines
Fri 7/1114:35SEA - STN
2 stops16h 40mMultiple Airlines
Deal found 16/9£459
Thu 30/1005:55STN - SEA
2 stops19h 05mMultiple Airlines
Thu 13/1114:35SEA - STN
2 stops21h 10mMultiple Airlines
Deal found 14/9£461
Fri 3/1008:15STN - SEA
3 stops33h 06mMultiple Airlines
Thu 16/1013:50SEA - STN
2 stops24h 35mMultiple Airlines
Deal found 16/9£464
Mon 3/1106:30STN - SEA
2 stops18h 30mMultiple Airlines
Sun 16/1114:35SEA - STN
2 stops24h 25mMultiple Airlines
Deal found 15/9£469
Fri 3/1008:15STN - SEA
3 stops42h 21mMultiple Airlines
Tue 7/1014:05SEA - STN
2 stops18h 30mMultiple Airlines
Deal found 16/9£478
Wed 15/1006:10STN - SEA
2 stops19h 40mMultiple Airlines
Mon 20/1015:45SEA - STN
2 stops22h 25mMultiple Airlines
Deal found 15/9£483
Mon 8/1206:30STN - SEA
2 stops18h 30mMultiple Airlines
Sun 14/1214:35SEA - STN
2 stops24h 25mMultiple Airlines
Deal found 15/9£487

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 September 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

Fri 31/10

08:20-18:00

2 stops16h 40m

Seattle/Tacoma Intl

Fri 7/11

14:35-15:15

2 stops16h 40m

£459

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 30/10

05:55-18:00

2 stops19h 05m

Seattle/Tacoma Intl

Thu 13/11

14:35-19:45

2 stops21h 10m

£461

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 3/11

06:30-17:00

2 stops18h 30m

Seattle/Tacoma Intl

Sun 16/11

14:35-23:00

2 stops24h 25m

£469

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 3/10

08:15-18:36

3 stops42h 21m

Seattle/Tacoma Intl

Tue 7/10

14:05-16:35

2 stops18h 30m

£478

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 8/10

18:45-22:31

3 stops35h 46m

Seattle/Tacoma Intl

Mon 13/10

07:15-16:05

3 stops24h 50m

£480

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 15/10

06:10-17:50

2 stops19h 40m

Seattle/Tacoma Intl

Mon 20/10

15:45-22:10

2 stops22h 25m

£483

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 8/12

06:30-17:00

2 stops18h 30m

Seattle/Tacoma Intl

Sun 14/12

14:35-23:00

2 stops24h 25m

£487

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 17/10

06:40-14:16

2 stops15h 36m

Seattle/Tacoma Intl

Mon 20/10

14:20-14:20

2 stops16h 00m

£493

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 15/10

22:00-11:55

2 stops21h 55m

Seattle/Tacoma Intl

Wed 22/10

18:50-22:30

2 stops19h 40m

£497

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 1/11

06:30-18:00

2 stops18h 30m

Seattle/Tacoma Intl

Sat 8/11

14:35-14:50

2 stops16h 15m

£518

Flights are sorted by cheapest return flights first.

Deals found on 15/9

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.

  • 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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