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$370+ Cheap flights from Kansai Intl (KIX) 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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
KIX — SEA
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Find flight deals from Kansai Intl to Seattle

Cheapest flights from Kansai Intl to Seattle
Explore the most affordable flight options available from Kansai Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Fri 12/2611:50 amKIX - SEA
1 stop18h 55mMultiple Airlines
Sun 1/41:40 pmSEA - KIX
1 stop16h 05mMultiple Airlines
Deal found 10/27$707
This Booking.com deal was found by Cheapflights users on 10/29. 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.
Fri 11/282:35 pmKIX - SEA
1 stop34h 25mMultiple Airlines
Fri 12/53:40 pmSEA - KIX
1 stop13h 40mMultiple Airlines
Deal found 10/29$745
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2510:15 amKIX - SEA
1 stop25h 25mPhilippine Airlines
Tue 12/29:30 pmSEA - KIX
1 stop29h 05mPhilippine Airlines
Deal found 10/28$764
This Mytrip deal was found by Cheapflights users on 10/28. 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 11/2510:00 amKIX - SEA
1 stop20h 55mMultiple Airlines
Mon 12/112:10 amSEA - KIX
1 stop16h 05mMultiple Airlines
Deal found 10/28$813
This Asiana Airlines deal was found by Cheapflights users on 10/28. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:30 amKIX - SEA
1 stop20h 25mAsiana Airlines
Mon 12/2912:10 amSEA - KIX
1 stop15h 30mAsiana Airlines
Deal found 10/28$829
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Sat 11/297:30 amKIX - SEA
2 stops30h 08mMultiple Airlines
Sat 12/63:40 pmSEA - KIX
1 stop23h 55mMultiple Airlines
Deal found 10/29$831
This STARLUX Airlines deal was found by Cheapflights users on 10/27. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1312:20 pmKIX - SEA
1 stop19h 45mSTARLUX Airlines
Mon 11/1711:45 pmSEA - KIX
1 stop18h 25mSTARLUX Airlines
Deal found 10/27$847

Cheap flight deals from Kansai Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Kansai Intl (KIX) 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$707
(Kiwi.com)

One-way from

$370
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$853
Provider with most accurate pricing for Osaka Kansai Intl-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Osaka Kansai Intl-Seattle/Tacoma Intl flights.
Search Deals
From Osaka Kansai Intl to Seattle/Tacoma Intl
Search Deals
One-way flight from Osaka Kansai Intl to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($148 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kansai Intl 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 October 29, 2025.
Use the filters below to find and compare flights from Osaka Kansai Intl Airport to Seattle that are best for you.

Fly from

Kansai Intl

Fly to

Seattle

Route

Depart

Return

Price

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Fri 12/26

11:50 am-1:45 pm

1 stop18h 55m

Seattle/Tacoma Intl

Sun 1/4

1:40 pm-10:45 pm

1 stop16h 05m

$707

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 3/14

3:40 pm-2:30 pm

1 stop14h 50m

Seattle/Tacoma Intl

Sat 3/21

2:40 pm-10:45 pm

1 stop16h 05m

$709

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 3/14

12:20 pm-4:05 pm

1 stop19h 45m

Seattle/Tacoma Intl

Fri 3/20

12:45 am-12:50 pm

1 stop20h 05m

$812

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 12/25

10:30 am-1:55 pm

1 stop20h 25m

Seattle/Tacoma Intl

Mon 12/29

12:10 am-8:40 am

1 stop15h 30m

$829

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 11/13

12:20 pm-3:05 pm

1 stop19h 45m

Seattle/Tacoma Intl

Mon 11/17

11:45 pm-11:10 am

1 stop18h 25m

$847

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 11/25

10:00 am-7:16 pm

2 stops26h 16m

Seattle/Tacoma Intl

Tue 12/2

3:40 pm-10:20 pm

1 stop13h 40m

$852

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 11/13

10:30 am-1:55 pm

1 stop20h 25m

Seattle/Tacoma Intl

Sun 11/16

12:10 am-8:55 pm

1 stop27h 45m

$862

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 11/19

8:00 am-6:47 pm

2 stops27h 47m

$375

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 12/11

9:10 pm-10:22 am

3 stops54h 12m

$384

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Fri 11/7

2:35 pm-8:00 am

1 stop34h 25m

$395

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 18 results
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Compare providers for flights from Kansai Intl to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kansai Intl to Seattle in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Osaka Kansai Intl Airport-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Osaka Kansai Intl Airport-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Osaka Kansai Intl Airport-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Osaka Kansai Intl Airport-Seattle flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Osaka Kansai Intl Airport-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Kansai Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Kansai Intl 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.

Cheapflights Insights

Everything you need to know about your flight from Osaka Kansai Intl Airport to Seattle

What is the cheapest time of day to fly from KIX to SEA?

Find hourly flight availability from Kansai Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 43% on flights from Osaka Kansai Intl Airport to Seattle by exploring options for tickets in the morning.

Related info for your journey

Find useful and relevant information for your journey from Kansai Intl 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 Osaka Kansai Intl?

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

  • How long is the flight from Osaka Kansai Intl Airport to Seattle?

    STARLUX Airlines and Asiana Airlines can get you from Osaka Kansai Intl Airport to Seattle in just under 19h 45m. Your travel time can differ by up to 40m. The distance between Osaka Kansai Intl Airport and Seattle is about 5024 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Kansai Intl to Seattle that include hotel bookings?

    Yes. In addition to deals on Kansai Intl to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Kansai Intl to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kansai Intl to Seattle.

  • Can I find deals for business class flights from Kansai Intl to Seattle?

    Yes. Cheapflights offers flight deals from Kansai Intl 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?

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