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Cheap flights from London Stansted Airport to Seattle from £360

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 19/3. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
3 Feb — 10 Feb1
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 4 January 2026.

Mon 16/206:10STN - SEA
2 stops18h 50mMultiple Airlines
Mon 23/214:35SEA - STN
2 stops15h 55mMultiple Airlines
Deal found 2/1£468
Fri 30/113:50STN - SEA
2 stops35h 10mMultiple Airlines
Fri 6/214:35SEA - STN
2 stops23h 00mMultiple Airlines
Deal found 1/1£500
Tue 17/306:30STN - SEA
2 stops19h 48mMultiple Airlines
Mon 13/418:55SEA - STN
1 stop11h 45mMultiple Airlines
Deal found 3/1£522
Tue 16/611:35STN - SEA
1 stop13h 35mMultiple Airlines
Fri 3/718:55SEA - STN
1 stop18h 25mMultiple Airlines
Deal found 2/1£524
Wed 18/206:00STN - SEA
2 stops19h 00mMultiple Airlines
Wed 25/214:35SEA - STN
2 stops23h 40mMultiple Airlines
Deal found 4/1£528
Thu 22/118:25STN - SEA
3 stops32h 51mMultiple Airlines
Fri 6/215:10SEA - STN
2 stops18h 45mMultiple Airlines
Deal found 3/1£532
Wed 17/611:40STN - SEA
1 stop13h 30mMultiple Airlines
Sat 27/618:55SEA - STN
1 stop14h 40mMultiple Airlines
Deal found 2/1£556
Thu 23/408:15STN - SEA
3 stops22h 34mMultiple Airlines
Mon 27/419:00SEA - STN
2 stops19h 50mMultiple Airlines
Deal found 3/1£562
Mon 9/205:55STN - SEA
2 stops17h 45mMultiple Airlines
Mon 23/217:40SEA - STN
2 stops18h 45mMultiple Airlines
Deal found 1/1£563
Mon 19/106:00STN - SEA
2 stops19h 00mMultiple Airlines
Fri 23/114:35SEA - STN
2 stops24h 30mMultiple Airlines
Deal found 3/1£564

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 4 January 2026.

Round-trip from

£468

One-way from

£360

Popular in

July

Cheapest in

January

Average price

£472
16/2-23/2
  • 16/2-23/2
  • 4 total stops
  • 34h 45m total
  • London to Seattle
Search Deals
19/3
  • 19/3
  • 2 total stops
  • 32h 10m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£60 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 4 January 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

Fri 30/1

13:50-17:00

2 stops35h 10m

Seattle/Tacoma Intl

Fri 6/2

14:35-21:35

2 stops23h 00m

£500

LondonSeattle

STN - SEA

STNSEA

London Stansted

Tue 17/3

06:30-19:18

2 stops19h 48m

Seattle/Tacoma Intl

Mon 13/4

18:55-14:40

1 stop11h 45m

£522

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 16/2

07:35-17:00

2 stops17h 25m

Seattle/Tacoma Intl

Mon 23/2

14:35-15:45

2 stops17h 10m

£555

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 19/1

06:00-17:00

2 stops19h 00m

Seattle/Tacoma Intl

Fri 23/1

14:35-23:05

2 stops24h 30m

£564

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 18/2

06:30-20:16

2 stops45h 46m

Seattle/Tacoma Intl

Wed 25/2

20:05-22:50

1 stop18h 45m

£596

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 30/3

12:00-20:40

2 stops16h 40m

Seattle/Tacoma Intl

Mon 20/4

15:40-22:50

2 stops23h 10m

£601

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sun 29/3

10:55-20:40

2 stops17h 45m

Seattle/Tacoma Intl

Thu 9/4

15:40-22:45

2 stops23h 05m

£605

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 14/2

09:30-21:01

2 stops19h 31m

Seattle/Tacoma Intl

Fri 20/2

12:32-17:25

2 stops20h 53m

£633

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 20/3

20:10-16:40

2 stops27h 30m

Seattle/Tacoma Intl

Mon 6/4

19:00-22:50

2 stops19h 50m

£669

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 26/2

06:15-17:00

2 stops18h 45m

Seattle/Tacoma Intl

Mon 9/3

15:35-18:50

2 stops20h 15m

£671

Flights are sorted by cheapest return flights first.

Deals found on 3/1

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
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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