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$502+ Cheap flights from Stansted (STN) to Seattle (SEA)

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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$616
(Mytrip)

One-way from

$502
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$677
From London Stansted to Seattle/Tacoma Intl
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One-way flight from London Stansted to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 13% potential increase in price ($113 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Stansted to Seattle

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 September 17, 2025.

This Mytrip deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/88:20 amSTN - SEA
2 stops35h 35mMultiple Airlines
Mon 10/132:20 pmSEA - STN
2 stops17h 45mMultiple Airlines
Deal found 9/15$616
This Mytrip deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:15 amSTN - SEA
2 stops18h 45mMultiple Airlines
Thu 11/62:35 pmSEA - STN
2 stops18h 55mMultiple Airlines
Deal found 9/15$618
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:20 amSTN - SEA
2 stops16h 40mMultiple Airlines
Fri 11/72:35 pmSEA - STN
2 stops16h 40mMultiple Airlines
Deal found 9/16$627
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/305:55 amSTN - SEA
2 stops19h 05mMultiple Airlines
Thu 11/132:35 pmSEA - STN
2 stops21h 10mMultiple Airlines
Deal found 9/14$629
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:15 amSTN - SEA
3 stops33h 06mMultiple Airlines
Thu 10/161:50 pmSEA - STN
2 stops24h 35mMultiple Airlines
Deal found 9/16$633
This Mytrip deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/36:30 amSTN - SEA
2 stops18h 30mMultiple Airlines
Sun 11/162:35 pmSEA - STN
2 stops24h 25mMultiple Airlines
Deal found 9/15$640
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:15 amSTN - SEA
3 stops42h 21mMultiple Airlines
Tue 10/72:05 pmSEA - STN
2 stops18h 30mMultiple Airlines
Deal found 9/16$652
This Mytrip deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:10 amSTN - SEA
2 stops19h 40mMultiple Airlines
Mon 10/203:45 pmSEA - STN
2 stops22h 25mMultiple Airlines
Deal found 9/15$659
This Mytrip deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:30 amSTN - SEA
2 stops18h 30mMultiple Airlines
Sun 12/142:35 pmSEA - STN
2 stops24h 25mMultiple Airlines
Deal found 9/15$665

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated September 17, 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

Fri 10/31

8:20 am-6:00 pm

2 stops16h 40m

Seattle/Tacoma Intl

Fri 11/7

2:35 pm-3:15 pm

2 stops16h 40m

$627

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 10/30

5:55 am-6:00 pm

2 stops19h 05m

Seattle/Tacoma Intl

Thu 11/13

2:35 pm-7:45 pm

2 stops21h 10m

$629

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 11/3

6:30 am-5:00 pm

2 stops18h 30m

Seattle/Tacoma Intl

Sun 11/16

2:35 pm-11:00 pm

2 stops24h 25m

$640

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 10/3

8:15 am-6:36 pm

3 stops42h 21m

Seattle/Tacoma Intl

Tue 10/7

2:05 pm-4:35 pm

2 stops18h 30m

$652

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 10/8

6:45 pm-10:31 pm

3 stops35h 46m

Seattle/Tacoma Intl

Mon 10/13

7:15 am-4:05 pm

3 stops24h 50m

$655

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 10/15

6:10 am-5:50 pm

2 stops19h 40m

Seattle/Tacoma Intl

Mon 10/20

3:45 pm-10:10 pm

2 stops22h 25m

$659

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 12/8

6:30 am-5:00 pm

2 stops18h 30m

Seattle/Tacoma Intl

Sun 12/14

2:35 pm-11:00 pm

2 stops24h 25m

$665

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 10/17

6:40 am-2:16 pm

2 stops15h 36m

Seattle/Tacoma Intl

Mon 10/20

2:20 pm-2:20 pm

2 stops16h 00m

$673

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 10/15

10:00 pm-11:55 am

2 stops21h 55m

Seattle/Tacoma Intl

Wed 10/22

6:50 pm-10:30 pm

2 stops19h 40m

$678

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 11/1

6:30 am-6:00 pm

2 stops18h 30m

Seattle/Tacoma Intl

Sat 11/8

2:35 pm-2:50 pm

2 stops16h 15m

$707

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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 round-trip 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?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from London Stansted to Seattle. 0 airlines have flights to Seattle/Tacoma Intl from London Stansted on a regular basis. Booking flights from London Stansted to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from London Stansted per day.

  • 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 vacation 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.

  • What is the cheapest month to book a flight from London Stansted Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from London Stansted Airport to Seattle (average of $238). Flying from London Stansted Airport to Seattle in June is currently the most expensive (average of $387). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

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