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Cheap flights from London Stansted Airport to Seattle from £401

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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
22 Jan — 29 Jan1
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 23 December 2025.

Wed 24/1206:20STN - SEA
2 stops17h 20mMultiple Airlines
Wed 7/114:35SEA - STN
3 stops22h 30mMultiple Airlines
Deal found 22/12£583
Tue 23/1218:00STN - SEA
2 stops29h 40mMultiple Airlines
Wed 7/114:35SEA - STN
3 stops22h 30mMultiple Airlines
Deal found 22/12£628
Sun 28/1208:30STN - SEA
1 stop17h 50mMultiple Airlines
Sun 4/120:05SEA - STN
1 stop17h 15mMultiple Airlines
Deal found 23/12£838
Mon 22/1218:00STN - SEA
2 stops29h 40mMultiple Airlines
Sat 31/114:35SEA - STN
2 stops21h 25mMultiple Airlines
Deal found 22/12£869
Sun 21/1218:15STN - SEA
2 stops29h 25mMultiple Airlines
Sun 25/114:35SEA - STN
2 stops20h 00mMultiple Airlines
Deal found 21/12£901
Fri 26/1212:00STN - SEA
1 stop14h 20mMultiple Airlines
Fri 2/120:05SEA - STN
1 stop12h 30mMultiple Airlines
Deal found 21/12£1,068

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 23 December 2025.

Round-trip from

£468

One-way from

£401

Popular in

July

Cheapest in

February

Average price

£635
2/2-16/2
  • 2/2-16/2
  • 4 total stops
  • 42h 30m total
  • London to Seattle
Search Deals
14/1
  • 14/1
  • 2 total stops
  • 57h 22m 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).
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 December 2025
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 23 December 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

Mon 23/2

20:30-22:46

3 stops34h 16m

Seattle/Tacoma Intl

Thu 26/2

14:35-19:45

2 stops21h 10m

£482

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 4/2

14:20-12:10

3 stops29h 50m

Seattle/Tacoma Intl

Wed 11/2

15:10-22:15

2 stops23h 05m

£557

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sun 18/1

06:15-22:16

2 stops24h 01m

Seattle/Tacoma Intl

Sun 25/1

14:35-18:35

2 stops20h 00m

£566

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 2/2

19:50-22:16

3 stops34h 26m

Seattle/Tacoma Intl

Mon 16/2

14:35-21:10

2 stops22h 35m

£607

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 12/6

06:40-16:00

2 stops17h 20m

Seattle/Tacoma Intl

Mon 24/8

18:45-17:35

1 stop14h 50m

£652

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 12/6

06:40-16:00

2 stops17h 20m

Seattle/Tacoma Intl

Sun 23/8

18:45-14:30

1 stop11h 45m

£659

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 12/1

06:30-21:28

2 stops22h 58m

Seattle/Tacoma Intl

Mon 30/3

18:45-14:40

1 stop11h 55m

£687

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 16/4

17:45-17:15

1 stop31h 30m

Seattle/Tacoma Intl

Mon 27/4

19:10-22:10

1 stop19h 00m

£713

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 16/4

17:45-17:15

1 stop31h 30m

Seattle/Tacoma Intl

Sun 3/5

19:10-22:10

1 stop19h 00m

£853

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 10/4

06:15-17:15

1 stop19h 00m

Seattle/Tacoma Intl

Mon 20/4

19:10-22:10

1 stop19h 00m

£899

Flights are sorted by cheapest return flights first.

Deals found on 21/12

Showing 1-10 of 18 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.

See more FAQs

Travelling to a place near Seattle?

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