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Cheap flights from London Stansted Airport to Seattle from £341

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
10 Mar — 17 Mar1
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 February 2026.

Wed 4/306:30
STN
-
SEA
2 stops18h 30m
Multiple Airlines
Mon 9/315:35
SEA
-
STN
2 stops22h 45m
Multiple Airlines
Deal found 6/2£415
Mon 20/422:45
STN
-
SEA
2 stops31h 08m
Multiple Airlines
Mon 4/515:40
SEA
-
STN
2 stops22h 45m
Multiple Airlines
Deal found 6/2£422
Tue 7/408:30
STN
-
SEA
2 stops17h 25m
Multiple Airlines
Tue 14/415:40
SEA
-
STN
2 stops19h 55m
Multiple Airlines
Deal found 7/2£438
Wed 22/422:45
STN
-
SEA
2 stops28h 38m
Multiple Airlines
Tue 5/518:55
SEA
-
STN
1 stop18h 25m
Multiple Airlines
Deal found 5/2£448
Tue 14/406:30
STN
-
SEA
2 stops20h 55m
Multiple Airlines
Tue 5/519:10
SEA
-
STN
1 stop18h 10m
Multiple Airlines
Deal found 6/2£453
Mon 20/422:45
STN
-
SEA
2 stops28h 40m
Multiple Airlines
Tue 19/517:40
SEA
-
STN
1 stop16h 50m
Multiple Airlines
Deal found 6/2£456
Thu 2/407:00
STN
-
SEA
2 stops21h 40m
Multiple Airlines
Thu 16/415:40
SEA
-
STN
2 stops23h 15m
Multiple Airlines
Deal found 7/2£477
Sat 2/515:25
STN
-
SEA
2 stops50h 15m
Multiple Airlines
Tue 12/518:55
SEA
-
STN
1 stop18h 25m
Multiple Airlines
Deal found 5/2£482

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 February 2026.

Round-trip from

£415

One-way from

£341

Popular in

July

Cheapest in

February

Average price

£452
4/3-9/3
  • 4/3-9/3
  • 4 total stops
  • 41h 15m total
  • London to Seattle
Search Deals
4/6
  • 4/6
  • 3 total stops
  • 32h 50m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 February 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

Tue 14/4

06:30-21:53

2 stops23h 23m

Seattle/Tacoma Intl

Thu 7/5

15:40-16:00

2 stops16h 20m

£469

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 22/4

22:45-21:53

2 stops31h 08m

Seattle/Tacoma Intl

Tue 5/5

19:00-22:40

2 stops19h 40m

£471

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 2/5

15:25-09:40

2 stops50h 15m

Seattle/Tacoma Intl

Tue 12/5

18:55-21:20

1 stop18h 25m

£482

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 14/4

06:30-09:33

3 stops35h 03m

Seattle/Tacoma Intl

Tue 5/5

07:15-22:10

3 stops30h 55m

£486

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 12/5

06:30-17:10

1 stop18h 40m

Seattle/Tacoma Intl

Sun 24/5

18:55-21:20

1 stop18h 25m

£528

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 1/4

07:00-22:42

3 stops23h 42m

Seattle/Tacoma Intl

Tue 14/4

15:40-16:00

2 stops16h 20m

£559

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 2/4

06:30-19:25

2 stops20h 55m

Seattle/Tacoma Intl

Tue 5/5

18:55-21:20

1 stop18h 25m

£584

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 9/3

05:55-16:40

2 stops17h 45m

Seattle/Tacoma Intl

Tue 24/3

15:35-23:50

2 stops25h 15m

£605

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sun 22/3

10:15-19:20

1 stop16h 05m

Seattle/Tacoma Intl

Sun 29/3

18:55-19:30

1 stop16h 35m

£669

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 14/4

06:15-17:15

1 stop19h 00m

Seattle/Tacoma Intl

Tue 5/5

19:10-16:50

1 stop37h 40m

£688

Flights are sorted by cheapest return flights first.

Deals found on 6/2

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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