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$405+ 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
KIX — SEA
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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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 septiembre 11, 2025.

Round-trip from

$672
(Kiwi.com)

One-way from

$405
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$1,052
From Osaka Kansai Intl to Seattle/Tacoma Intl
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One-way flight from Osaka Kansai Intl to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 17% potential increase in price ($210 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($36 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 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 septiembre 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
vie. 11/1412:00 pmKIX - SEA
1 stop18h 55mMultiple Airlines
vie. 11/281:40 pmSEA - KIX
1 stop16h 05mMultiple Airlines
Deal found 9/10$672
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
sáb. 11/1510:50 amKIX - SEA
1 stop20h 05mMultiple Airlines
vie. 11/281:40 pmSEA - KIX
1 stop16h 05mMultiple Airlines
Deal found 9/10$683
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
sáb. 11/1510:50 amKIX - SEA
1 stop20h 05mMultiple Airlines
sáb. 11/2912:10 amSEA - KIX
1 stop19h 10mMultiple Airlines
Deal found 9/10$694
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
vie. 11/1412:00 pmKIX - SEA
1 stop18h 55mMultiple Airlines
sáb. 11/291:40 pmSEA - KIX
1 stop16h 05mMultiple Airlines
Deal found 9/10$710
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
vie. 11/145:00 pmKIX - SEA
2 stops29h 35mMultiple Airlines
dom. 11/301:40 pmSEA - KIX
1 stop16h 05mMultiple Airlines
Deal found 9/10$716
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/810:20 amKIX - SEA
1 stop24h 55mPhilippine Airlines
mié. 10/2910:30 pmSEA - KIX
1 stop29h 05mPhilippine Airlines
Deal found 9/10$719
This FlightHub deal was found by Cheapflights users on 9/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/148:25 pmKIX - SEA
1 stop34h 30mAsiana Airlines
jue. 11/2712:10 amSEA - KIX
1 stop27h 45mAsiana Airlines
Deal found 9/10$726
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
dom. 11/1611:50 amKIX - SEA
1 stop19h 05mMultiple Airlines
dom. 11/301:40 pmSEA - KIX
1 stop16h 05mMultiple Airlines
Deal found 9/10$729
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
dom. 11/1611:50 amKIX - SEA
1 stop19h 05mMultiple Airlines
vie. 11/281:40 pmSEA - KIX
1 stop16h 05mMultiple Airlines
Deal found 9/10$730
This Trip.com deal was found by Cheapflights users on 9/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/2610:15 amKIX - SEA
1 stop25h 20mPhilippine Airlines
dom. 11/29:30 pmSEA - KIX
1 stop23h 35mPhilippine Airlines
Deal found 9/11$735

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 septiembre 11, 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

vie. 11/14

12:00 pm-1:55 pm

1 stop18h 55m

Seattle/Tacoma Intl

vie. 11/28

1:40 pm-10:45 pm

1 stop16h 05m

$672

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

sáb. 11/15

10:50 am-1:55 pm

1 stop20h 05m

Seattle/Tacoma Intl

vie. 11/28

1:40 pm-10:45 pm

1 stop16h 05m

$683

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

sáb. 11/15

10:50 am-1:55 pm

1 stop20h 05m

Seattle/Tacoma Intl

dom. 11/30

1:40 pm-10:45 pm

1 stop16h 05m

$683

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

vie. 11/14

12:00 pm-1:55 pm

1 stop18h 55m

Seattle/Tacoma Intl

sáb. 11/29

1:40 pm-10:45 pm

1 stop16h 05m

$710

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

mié. 10/8

10:20 am-7:15 pm

1 stop24h 55m

Seattle/Tacoma Intl

mié. 10/29

10:30 pm-7:35 pm

1 stop29h 05m

$719

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

vie. 11/14

8:25 pm-1:55 pm

1 stop34h 30m

Seattle/Tacoma Intl

jue. 11/27

12:10 am-8:55 pm

1 stop27h 45m

$726

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

dom. 11/16

11:50 am-1:55 pm

1 stop19h 05m

Seattle/Tacoma Intl

dom. 11/30

1:40 pm-10:45 pm

1 stop16h 05m

$729

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

dom. 11/16

11:50 am-1:55 pm

1 stop19h 05m

Seattle/Tacoma Intl

vie. 11/28

1:40 pm-10:45 pm

1 stop16h 05m

$730

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

dom. 10/26

10:15 am-7:35 pm

1 stop25h 20m

Seattle/Tacoma Intl

dom. 11/2

9:30 pm-2:05 pm

1 stop23h 35m

$735

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

lun. 9/29

9:10 am-12:30 pm

1 stop19h 20m

Seattle/Tacoma Intl

mar. 10/21

2:15 pm-9:05 pm

1 stop14h 50m

$753

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 20 results
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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 septiembre 11, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 44% on flights from Osaka Kansai Intl Airport to Seattle by exploring options for tickets in the morning.

How much does it cost to fly round-trip from Osaka Kansai Intl Airport to Seattle?

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.

  • What are the cheapest airlines to fly from Osaka Kansai Intl Airport to Seattle one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $416. However, be on the lookout for offers from Korean Air and Philippine Airlines, as they are both options that can get you from Osaka Kansai Intl Airport to Seattle for a low price.

  • 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.

  • What is the cheapest month to book a flight from Osaka Kansai Intl Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Osaka Kansai Intl Airport to Seattle (average of $238). Flying from Osaka Kansai Intl Airport to Seattle in June is currently the most expensive (average of $388). 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

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