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Cheap flights from London Stansted Airport to Seattle from £425

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 16/11. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
30 11月 — 7 12月1
1 adult
1 adult, Economy, 0 bags

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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 31 10月 2025.

週四 6/1106:30STN - SEA
2 stops18h 30mMultiple Airlines
週四 13/1114:35SEA - STN
2 stops16h 15mMultiple Airlines
Deal found 29/10£483
週五 28/1119:50STN - SEA
3 stops34h 16mMultiple Airlines
週四 4/1214:00SEA - STN
2 stops26h 15mMultiple Airlines
Deal found 29/10£537
週一 3/1113:30STN - SEA
1 stop12h 50mMultiple Airlines
週一 10/1120:05SEA - STN
1 stop17h 15mMultiple Airlines
Deal found 29/10£585
週六 29/1106:40STN - SEA
2 stops17h 00mMultiple Airlines
週六 6/1217:40SEA - STN
2 stops20h 00mMultiple Airlines
Deal found 30/10£600
週一 22/1218:00STN - SEA
2 stops29h 40mMultiple Airlines
週二 30/1217:40SEA - STN
2 stops21h 30mMultiple Airlines
Deal found 30/10£674
週五 28/1108:30STN - SEA
1 stop17h 50mMultiple Airlines
週五 5/1220:05SEA - STN
1 stop12h 30mMultiple Airlines
Deal found 31/10£697
週四 13/1108:45STN - SEA
2 stops16h 15mMultiple Airlines
週三 26/1114:35SEA - STN
2 stops23h 40mMultiple Airlines
Deal found 29/10£706
週一 17/1108:40STN - SEA
2 stops35h 30mMultiple Airlines
週日 30/1105:45SEA - STN
3 stops23h 45mMultiple Airlines
Deal found 29/10£707
週三 12/1106:00STN - SEA
2 stops19h 00mMultiple Airlines
週三 19/1114:35SEA - STN
2 stops18h 05mMultiple Airlines
Deal found 30/10£718

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 31 10月 2025.

Round-trip from

£512

One-way from

£425

Popular in

July

Cheapest in

January

Average price

£551
20/2-1/3
  • 20/2-1/3
  • 4 total stops
  • 42h 55m total
  • London to Seattle
Search Deals
16/11
  • 16/11
  • 2 total stops
  • 21h 35m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 12% 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 October 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 31 10月 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

週五 28/11

19:50-22:06

3 stops34h 16m

Seattle/Tacoma Intl

週四 4/12

14:00-00:15

2 stops26h 15m

£537

LondonSeattle

STN - SEA

STNSEA

London Stansted

週五 20/2

13:30-18:20

1 stop12h 50m

Seattle/Tacoma Intl

週日 1/3

20:05-23:00

1 stop18h 55m

£574

LondonSeattle

STN - SEA

STNSEA

London Stansted

週一 22/12

18:00-15:40

2 stops29h 40m

Seattle/Tacoma Intl

週二 30/12

17:40-23:10

2 stops21h 30m

£674

LondonSeattle

STN - SEA

STNSEA

London Stansted

週四 13/11

08:45-17:00

2 stops16h 15m

Seattle/Tacoma Intl

週三 26/11

14:35-22:15

2 stops23h 40m

£706

LondonSeattle

STN - SEA

STNSEA

London Stansted

週一 17/11

08:40-12:10

2 stops35h 30m

Seattle/Tacoma Intl

週日 30/11

05:45-13:30

3 stops23h 45m

£712

LondonSeattle

STN - SEA

STNSEA

London Stansted

週四 4/12

06:15-17:00

2 stops18h 45m

Seattle/Tacoma Intl

週一 8/12

14:35-14:30

2 stops15h 55m

£718

LondonSeattle

STN - SEA

STNSEA

London Stansted

週六 15/11

06:40-15:40

2 stops17h 00m

Seattle/Tacoma Intl

週六 22/11

17:40-21:40

2 stops20h 00m

£782

LondonSeattle

STN - SEA

STNSEA

London Stansted

週二 14/4

06:15-17:15

1 stop19h 00m

Seattle/Tacoma Intl

週一 20/4

19:10-22:10

1 stop19h 00m

£809

LondonSeattle

STN - SEA

STNSEA

London Stansted

週六 29/11

05:55-15:40

2 stops17h 45m

Seattle/Tacoma Intl

週日 30/11

20:05-18:20

1 stop14h 15m

£840

LondonSeattle

STN - SEA

STNSEA

London Stansted

週日 30/11

06:30-18:20

1 stop19h 50m

Seattle/Tacoma Intl

週一 8/12

20:05-18:20

1 stop14h 15m

£884

Flights are sorted by cheapest return flights first.

Deals found on 29/10

Showing 1-10 of 18 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
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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