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$423+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
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Cheap 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 February 12, 2026.

This Mytrip deal was found by Cheapflights users on 2/11. 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 2/266:30 am
STN
-
SEA
2 stops18h 30m
Multiple Airlines
Mon 3/22:35 pm
SEA
-
STN
2 stops22h 45m
Multiple Airlines
Deal found 2/11$563
This Mytrip deal was found by Cheapflights users on 2/9. 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 3/98:30 am
STN
-
SEA
2 stops16h 30m
Multiple Airlines
Tue 3/243:35 pm
SEA
-
STN
2 stops22h 45m
Multiple Airlines
Deal found 2/9$572
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:30 am
STN
-
SEA
1 stop19h 50m
Multiple Airlines
Sun 3/89:05 pm
SEA
-
STN
1 stop12h 30m
Multiple Airlines
Deal found 2/10$621
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:30 am
STN
-
SEA
1 stop19h 50m
Multiple Airlines
Mon 3/99:05 pm
SEA
-
STN
1 stop14h 15m
Multiple Airlines
Deal found 2/10$622
This Booking.com deal was found by Cheapflights users on 2/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:30 am
STN
-
SEA
2 stops18h 30m
Multiple Airlines
Tue 3/32:35 pm
SEA
-
STN
2 stops15h 45m
Multiple Airlines
Deal found 2/12$634
This Mytrip deal was found by Cheapflights users on 2/11. 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 3/116:30 am
STN
-
SEA
1 stop19h 50m
Multiple Airlines
Wed 3/259:05 pm
SEA
-
STN
1 stop15h 30m
Multiple Airlines
Deal found 2/11$636
This Booking.com deal was found by Cheapflights users on 2/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:30 am
STN
-
SEA
3 stops39h 49m
Multiple Airlines
Tue 5/53:40 pm
SEA
-
STN
2 stops16h 20m
Multiple Airlines
Deal found 2/10$640
This Mytrip deal was found by Cheapflights users on 2/10. 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.
Tue 3/38:30 am
STN
-
SEA
2 stops21h 46m
Multiple Airlines
Wed 3/42:35 pm
SEA
-
STN
2 stops22h 00m
Multiple Airlines
Deal found 2/10$643
This Booking.com deal was found by Cheapflights users on 2/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:30 am
STN
-
SEA
2 stops23h 23m
Multiple Airlines
Tue 5/53:40 pm
SEA
-
STN
2 stops16h 20m
Multiple Airlines
Deal found 2/10$646
This Mytrip deal was found by Cheapflights users on 2/10. 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 4/136:30 am
STN
-
SEA
2 stops23h 23m
Multiple Airlines
Tue 4/143:40 pm
SEA
-
STN
2 stops16h 20m
Multiple Airlines
Deal found 2/10$655

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 February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$563
(Mytrip)

One-way from

$423
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$635
Provider with most accurate pricing for London (LON)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Seattle/Tacoma Intl flights.
Search Deals
From London Stansted to Seattle/Tacoma Intl
Search Deals
One-way flight from London Stansted to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($104 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 12, 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

Wed 3/4

6:25 pm-3:40 pm

2 stops29h 15m

Seattle/Tacoma Intl

Mon 3/9

3:35 pm-11:55 pm

2 stops25h 20m

$726

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 4/22

10:00 pm-9:53 pm

2 stops31h 53m

Seattle/Tacoma Intl

Tue 5/5

3:40 pm-4:00 pm

2 stops16h 20m

$741

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 5/22

4:30 pm-1:45 pm

3 stops29h 15m

Seattle/Tacoma Intl

Sat 5/30

3:55 pm-10:00 pm

2 stops22h 05m

$807

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 3/11

6:30 am-8:16 pm

2 stops20h 46m

Seattle/Tacoma Intl

Wed 3/25

9:05 pm-5:50 pm

1 stop13h 45m

$807

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 2/23

6:30 am-6:20 pm

1 stop19h 50m

Seattle/Tacoma Intl

Wed 3/4

2:35 pm-5:40 pm

2 stops19h 05m

$894

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 4/9

8:15 am-5:55 pm

2 stops17h 40m

Seattle/Tacoma Intl

Tue 4/21

8:00 am-4:00 pm

3 stops24h 00m

$935

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 4/13

10:50 am-5:15 pm

1 stop38h 25m

Seattle/Tacoma Intl

Mon 4/27

7:10 pm-9:55 am

1 stop30h 45m

$943

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 4/22

6:15 am-5:15 pm

1 stop19h 00m

Seattle/Tacoma Intl

Wed 5/6

7:10 pm-10:10 pm

1 stop19h 00m

$945

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 4/20

10:50 am-5:15 pm

1 stop38h 25m

Seattle/Tacoma Intl

Fri 4/24

7:10 pm-4:50 pm

1 stop37h 40m

$956

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 5/4

10:50 am-5:15 pm

1 stop38h 25m

Seattle/Tacoma Intl

Fri 5/8

7:10 pm-10:10 pm

1 stop19h 00m

$956

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 19 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.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Edmonds
Lacey
Kent
Renton
Puyallup
Kirkland
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

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