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Kansai Intl

$407+ Cheap flights from Seattle (SEA) to Kansai Intl (KIX)

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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KIX
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Osaka Kansai Intl are usually found in February or January, booked 77 days in advance, depart on a Thursday or Monday and return on a Thursday

Cheap flight deals from Seattle to Kansai Intl

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

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$969
(Cheapflightsfares)

One-way from

$438
(Expedia)

Popular in

December

Cheapest in

February

Average price

$975
Provider with most accurate pricing for Seattle/Tacoma Intl-Osaka Kansai Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Osaka Kansai Intl flights.
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From Seattle/Tacoma Intl to Osaka Kansai Intl
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One-way flight from Seattle/Tacoma Intl to Osaka Kansai Intl
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Highest demand for flights based on searches. 4% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Seattle to Kansai Intl

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

This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/112:00 pmSEA - KIX
1 stop32h 50mAsiana Airlines
Thu 11/205:00 pmKIX - SEA
1 stop36h 35mAsiana Airlines
Deal found 4/28$723
This Air Canada deal was found by Cheapflights users on 4/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/15:30 amSEA - KIX
1 stop18h 55mAir Canada
Tue 10/76:05 pmKIX - SEA
1 stop12h 11mAir Canada
Deal found 4/27$784
This Mytrip deal was found by Cheapflights users on 4/28. 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.
Fri 9/2611:35 pmSEA - KIX
1 stop28h 05mPhilippine Airlines
Sun 10/510:20 amKIX - SEA
1 stop24h 55mPhilippine Airlines
Deal found 4/28$804
This Cheapflightsfares deal was found by Cheapflights users on 4/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:00 amSEA - KIX
1 stop15h 50mANA
Wed 10/226:35 pmKIX - SEA
1 stop11h 50mANA
Deal found 4/27$816
This Air Canada deal was found by Cheapflights users on 4/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/310:00 amSEA - KIX
1 stop14h 25mMultiple Airlines
Tue 9/911:50 amKIX - SEA
2 stops17h 15mMultiple Airlines
Deal found 4/27$830
This United Airlines deal was found by Cheapflights users on 4/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/205:14 pmSEA - KIX
2 stops29h 36mUnited Airlines
Tue 10/288:25 amKIX - SEA
1 stop21h 55mUnited Airlines
Deal found 4/27$838
This StudentUniverse deal was found by Cheapflights users on 4/28. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/186:15 amSEA - KIX
2 stops21h 45mKorean Air
Tue 11/259:15 amKIX - SEA
1 stop16h 45mKorean Air
Deal found 4/28$841
This oojo deal was found by Cheapflights users on 4/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/301:10 amSEA - KIX
1 stop24h 55mChina Airlines
Mon 10/131:10 pmKIX - SEA
1 stop22h 10mChina Airlines
Deal found 4/27$851
This KAYAK deal was found by Cheapflights users on 4/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/37:15 amSEA - KIX
2 stops33h 10mJapan Airlines
Tue 9/98:55 pmKIX - SEA
2 stops34h 01mJapan Airlines
Deal found 4/27$870
This CrystalTravel deal was found by Cheapflights users on 4/28. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/251:15 amSEA - KIX
1 stop20h 45mSTARLUX Airlines
Sun 10/51:25 pmKIX - SEA
1 stop18h 45mSTARLUX Airlines
Deal found 4/28$953
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/271:10 amSEA - KIX
1 stop18h 45mEVA Air
Tue 11/412:55 pmKIX - SEA
2 stops24h 07mEVA Air
Deal found 4/28$1,058
This oojo deal was found by Cheapflights users on 4/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/187:55 pmSEA - KIX
3 stops27h 00mCathay Pacific
Mon 9/16:35 pmKIX - SEA
2 stops29h 32mCathay Pacific
Deal found 4/27$1,064

Cheapflights Fare Finder

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

Fly from

Seattle

Fly to

Kansai Intl

Route

Depart

Return

Price

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 8/26

2:30 pm-9:40 am

1 stop27h 10m

Osaka Kansai Intl

Wed 9/3

7:10 pm-12:30 pm

1 stop33h 20m

$723

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Wed 10/1

5:30 am-4:25 pm

1 stop18h 55m

Osaka Kansai Intl

Tue 10/7

6:05 pm-2:16 pm

1 stop12h 11m

$784

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 9/26

11:35 pm-7:40 pm

1 stop28h 05m

Osaka Kansai Intl

Sun 10/5

10:20 am-7:15 pm

1 stop24h 55m

$804

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 10/13

7:00 am-2:50 pm

1 stop15h 50m

Osaka Kansai Intl

Wed 10/22

6:35 pm-2:25 pm

1 stop11h 50m

$816

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Wed 9/3

10:00 am-4:25 pm

1 stop14h 25m

Osaka Kansai Intl

Tue 9/9

11:50 am-1:05 pm

2 stops17h 15m

$830

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 10/20

5:14 pm-2:50 pm

2 stops29h 36m

Osaka Kansai Intl

Tue 10/28

8:25 am-2:20 pm

1 stop21h 55m

$838

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 9/30

1:10 am-6:05 pm

1 stop24h 55m

Osaka Kansai Intl

Mon 10/13

1:10 pm-7:20 pm

1 stop22h 10m

$851

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Wed 9/3

7:15 am-8:25 am

2 stops33h 10m

Osaka Kansai Intl

Tue 9/9

8:55 pm-2:56 pm

2 stops34h 01m

$870

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Thu 9/25

1:15 am-2:00 pm

1 stop20h 45m

Osaka Kansai Intl

Sun 10/5

1:25 pm-4:10 pm

1 stop18h 45m

$953

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Wed 7/16

8:40 pm-6:45 pm

1 stop30h 05m

Osaka Kansai Intl

Wed 7/30

8:45 pm-6:00 am

1 stop25h 15m

$1,003

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 31 results
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Compare providers for flights from Seattle to Kansai Intl

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 Seattle to Kansai Intl in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 Seattle-Osaka Kansai Intl Airport flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Osaka Kansai Intl Airport flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Seattle-Osaka Kansai Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Osaka Kansai Intl Airport flights, Cheapflights users trust AranGrant the most. AranGrant 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 Seattle-Osaka Kansai Intl Airport 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 Seattle to Kansai Intl

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

How far ahead should I book a flight from Seattle to Osaka Kansai Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Kansai Intl. Price data was last updated on April 25, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Osaka Kansai Intl Airport, you should look to book at least 77 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from Seattle to Osaka Kansai Intl Airport (average of $898). Flying from Seattle to Osaka Kansai Intl Airport in December is currently the most expensive (average of $1,350). 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.

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

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

It’s typically best to fly out from Seattle to Osaka Kansai Intl Airport in the morning. Doing so could potentially save you 32% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Seattle to Osaka Kansai Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Kansai Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Osaka Kansai Intl Airport flight should consider departing on Thursday at noon when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Kansai Intl by month

Plan your trip to Kansai Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Osaka Kansai Intl Airport ranges from 1.6 - 7.9 inches per month. June is typically the wettest month, when rainfall can reach 7.9 in. January is typically the driest time to visit Osaka Kansai Intl Airport when rainfall is around 1.6 in.

Temperature in Kansai Intl by month

Plan your trip to Kansai Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Osaka Kansai Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

Reviews of airlines servicing Kansai Intl

Get insights into the airlines that provide service to Kansai Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kansai Intl. Reviews last updated April 29, 2025.
Read through reviews of airlines operating flights from Seattle to Osaka, such as STARLUX Airlines, EVA Air and Korean Air. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Crew

9.3

Boarding

9.0

Food

8.9

Overall

9.1

Entertainment

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
161 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Crew

9.3

Boarding

9.0

Food

8.9

Overall

9.1

Entertainment

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,184 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Crew

9.3

Boarding

9.0

Food

8.9

Overall

9.1

Entertainment

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,063 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Crew

9.3

Boarding

9.0

Food

8.9

Overall

9.1

Entertainment

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very good
1,459 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Crew

9.3

Boarding

9.0

Food

8.9

Overall

9.1

Entertainment

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
729 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Crew

9.3

Boarding

9.0

Food

8.9

Overall

9.1

Entertainment

9.0

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Kansai Intl. 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 from for flights from Seattle to Osaka Kansai Intl?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Osaka Kansai Intl. 10 airlines have flights from Seattle/Tacoma Intl to Osaka Kansai Intl on a regular basis. Booking flights from Seattle/Tacoma Intl to Osaka Kansai Intl should not be difficult; the airport handles an average of 0 outbound flights to Osaka Kansai Intl per day.

  • What are the cheapest airlines flying from Seattle to Osaka Kansai Intl Airport round-trip?

    Flying on ANA is currently your cheapest option to Osaka Kansai Intl Airport, with prices starting at $969. Additional round-trip tickets that might be worth considering are offered by United Airlines and STARLUX Airlines, with the lowest prices starting at $976 and $999, respectively. These flights start at 12% lower than the current average price 3 months from now.

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

    $438 is the cheapest one-way deal found within the past few days, from Asiana Airlines. You may also be able to find cheap deals on China Eastern and ANA, with prices starting from $478 and $484, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Kansai Intl 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 Seattle to Osaka Kansai Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Osaka Kansai Intl Airport (average of $898). Flying from Seattle to Osaka Kansai Intl Airport in December is currently the most expensive (average of $1,350). 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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Alternative routes for Seattle to Kansai Intl

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Top 10 airlines flying from Seattle to Kansai Intl

Discover the top 10 airlines that operate flights from Seattle to Kansai Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$648Average$922FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$716Average$1,228FlexibilityNo cancel feeOn-time81%
China EasternCheapest$719Average$756FlexibilityNo cancel feeOn-time62%
ANACheapest$746Average$1,117FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$797Average$905FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$802Average$1,132FlexibilityNo cancel feeOn-time67%
STARLUX AirlinesCheapest$918Average$1,105FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$931Average$1,140FlexibilityNo cancel feeOn-time70%
Hawaiian AirlinesCheapest$997Average$1,479FlexibilityNo cancel feeOn-time85%
EVA AirCheapest$1,033Average$1,170FlexibilityNo cancel feeOn-time74%

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