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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 23/2. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
15 1月 — 22 1月1
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 16 12月 2025.

週二 23/1205:55STN - SEA
2 stops17h 45mMultiple Airlines
週二 6/117:40SEA - STN
2 stops20h 45mMultiple Airlines
Deal found 15/12£888
週三 24/1206:20STN - SEA
2 stops18h 40mMultiple Airlines
週三 31/1214:35SEA - STN
2 stops17h 50mMultiple Airlines
Deal found 15/12£893
週五 26/1212:00STN - SEA
1 stop14h 20mMultiple Airlines
週五 2/120:05SEA - STN
1 stop19h 00mMultiple Airlines
Deal found 14/12£900
週三 17/1208:30STN - SEA
2 stops32h 39mMultiple Airlines
週五 2/120:05SEA - STN
1 stop19h 00mMultiple Airlines
Deal found 14/12£953
週六 27/1207:15STN - SEA
2 stops17h 45mMultiple Airlines
週日 4/120:05SEA - STN
1 stop27h 45mMultiple Airlines
Deal found 15/12£1,042
週五 19/1206:30STN - SEA
1 stop19h 50mMultiple Airlines
週日 28/1220:05SEA - STN
1 stop18h 55mMultiple Airlines
Deal found 14/12£1,067
週二 16/1221:45STN - SEA
1 stop28h 35mMultiple Airlines
週六 10/114:35SEA - STN
2 stops23h 10mMultiple Airlines
Deal found 14/12£1,125
週三 24/1206:20STN - SEA
2 stops17h 20mMultiple Airlines
週四 1/113:40SEA - STN
2 stops25h 30mMultiple Airlines
Deal found 14/12£1,133

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 16 12月 2025.

Round-trip from

£550

One-way from

£401

Popular in

July

Cheapest in

January

Average price

£638
5/2-19/2
  • 5/2-19/2
  • 4 total stops
  • 52h 20m total
  • London to Seattle
Search Deals
23/2
  • 23/2
  • 2 total stops
  • 18h 50m 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 16 12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

週四 5/2

18:10-13:20

2 stops27h 10m

Seattle/Tacoma Intl

週四 19/2

14:00-23:10

2 stops25h 10m

£550

LondonSeattle

STN - SEA

STNSEA

London Stansted

週四 29/1

08:05-17:00

2 stops16h 55m

Seattle/Tacoma Intl

週四 5/2

14:35-22:15

3 stops23h 40m

£577

LondonSeattle

STN - SEA

STNSEA

London Stansted

週三 28/1

08:30-17:00

2 stops16h 30m

Seattle/Tacoma Intl

週三 4/2

14:35-15:05

2 stops16h 30m

£596

LondonSeattle

STN - SEA

STNSEA

London Stansted

週四 15/1

06:30-22:16

3 stops47h 46m

Seattle/Tacoma Intl

週四 22/1

14:35-14:55

2 stops16h 20m

£650

LondonSeattle

STN - SEA

STNSEA

London Stansted

週日 10/5

05:55-16:00

2 stops18h 05m

Seattle/Tacoma Intl

週一 18/5

18:45-17:35

1 stop14h 50m

£659

LondonSeattle

STN - SEA

STNSEA

London Stansted

週三 14/1

16:20-19:17

2 stops34h 57m

Seattle/Tacoma Intl

週四 1/10

18:45-17:35

1 stop14h 50m

£689

LondonSeattle

STN - SEA

STNSEA

London Stansted

週六 25/4

17:45-17:15

1 stop31h 30m

Seattle/Tacoma Intl

週六 2/5

19:10-10:15

1 stop31h 05m

£716

LondonSeattle

STN - SEA

STNSEA

London Stansted

週三 1/4

07:00-22:52

3 stops23h 52m

Seattle/Tacoma Intl

週五 17/4

08:00-00:50

3 stops32h 50m

£733

LondonSeattle

STN - SEA

STNSEA

London Stansted

週六 10/1

20:30-22:16

3 stops33h 46m

Seattle/Tacoma Intl

週四 15/1

14:35-22:10

2 stops23h 35m

£754

LondonSeattle

STN - SEA

STNSEA

London Stansted

週二 13/1

05:55-22:16

2 stops24h 21m

Seattle/Tacoma Intl

週六 16/5

19:00-16:50

2 stops13h 50m

£767

Flights are sorted by cheapest return flights first.

Deals found on 14/12

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.

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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