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Kansai Intl

$383+ 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
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 September, booked 20 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 June 12, 2025.

Round-trip from

$669
(Air Canada)

One-way from

$383
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,207
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. 8% potential increase in price ($92 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1510:00 amSEA - KIX
1 stop14h 25mAir Canada
Thu 11/67:10 pmKIX - SEA
1 stop16h 16mAir Canada
Deal found 6/11$669
This Trip.com deal was found by Cheapflights users on 6/11. 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.
Wed 11/1211:00 amSEA - KIX
1 stop17h 00mKorean Air
Wed 11/199:15 amKIX - SEA
1 stop16h 45mKorean Air
Deal found 6/11$707
This Gotogate deal was found by Cheapflights users on 6/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1510:00 amSEA - KIX
1 stop14h 25mMultiple Airlines
Thu 10/307:25 amKIX - SEA
2 stops23h 01mMultiple Airlines
Deal found 6/9$725
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/511:35 pmSEA - KIX
1 stop22h 45mPhilippine Airlines
Sun 9/143:20 pmKIX - SEA
1 stop19h 55mPhilippine Airlines
Deal found 6/11$728
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1312:45 pmSEA - KIX
1 stop16h 15mDelta
Tue 7/229:05 amKIX - SEA
1 stop20h 55mDelta
Deal found 6/11$745
This oojo deal was found by Cheapflights users on 6/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/92:30 pmSEA - KIX
1 stop14h 35mAsiana Airlines
Wed 7/169:10 amKIX - SEA
1 stop19h 35mAsiana Airlines
Deal found 6/11$763
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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.
Wed 10/154:30 pmSEA - KIX
1 stop13h 20mANA
Thu 10/307:10 amKIX - SEA
2 stops25h 05mANA
Deal found 6/10$764
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/54:30 pmSEA - KIX
1 stop35h 00mUnited Airlines
Wed 10/158:30 amKIX - SEA
2 stops30h 45mUnited Airlines
Deal found 6/11$780
This Gotogate deal was found by Cheapflights users on 6/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/141:15 amSEA - KIX
1 stop20h 45mSTARLUX Airlines
Mon 10/2712:20 pmKIX - SEA
1 stop19h 45mSTARLUX Airlines
Deal found 6/11$897
This oojo deal was found by Cheapflights users on 6/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/141:10 amSEA - KIX
1 stop18h 50mChina Airlines
Thu 11/67:00 pmKIX - SEA
1 stop16h 15mChina Airlines
Deal found 6/11$900

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 June 12, 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

Mon 9/1

10:00 am-4:25 pm

1 stop14h 25m

Osaka Kansai Intl

Tue 9/16

6:05 pm-2:16 pm

1 stop12h 11m

$669

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 7/29

10:00 am-7:30 pm

2 stops17h 30m

Osaka Kansai Intl

Thu 9/11

6:05 pm-6:36 pm

1 stop16h 31m

$698

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 9/7

7:00 am-9:00 pm

2 stops22h 00m

Osaka Kansai Intl

Wed 9/17

12:35 pm-8:37 pm

2 stops24h 02m

$712

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 9/5

11:35 pm-2:20 pm

1 stop22h 45m

Osaka Kansai Intl

Sun 9/14

3:20 pm-7:15 pm

1 stop19h 55m

$728

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 7/13

12:45 pm-9:00 pm

1 stop16h 15m

Osaka Kansai Intl

Tue 7/22

9:05 am-2:00 pm

1 stop20h 55m

$745

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 8/26

7:00 am-2:50 pm

1 stop15h 50m

Osaka Kansai Intl

Wed 9/3

11:00 am-3:14 pm

2 stops20h 14m

$762

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Wed 7/9

2:30 pm-9:05 pm

1 stop14h 35m

Osaka Kansai Intl

Wed 7/16

9:10 am-12:45 pm

1 stop19h 35m

$763

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 8/31

1:40 am-12:00 pm

1 stop18h 20m

Osaka Kansai Intl

Tue 9/16

7:05 pm-7:20 pm

1 stop16h 15m

$901

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 8/25

1:15 am-2:00 pm

1 stop20h 45m

Osaka Kansai Intl

Wed 9/3

1:25 pm-4:10 pm

1 stop18h 45m

$902

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 7/18

7:20 am-12:10 pm

2 stops36h 50m

Osaka Kansai Intl

Fri 8/15

7:00 pm-4:00 pm

2 stops37h 00m

$974

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 27 results
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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 June 9, 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 19 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 $888). Flying from Seattle to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,324). 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 June 12, 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 June 12, 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
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.1
Wonderful
178 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
EVA Air
8.4
Very good
1,202 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,088 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Japan Airlines
8.3
Very good
1,489 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
738 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

Food

8.8

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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 Air Canada is currently your cheapest option to Osaka Kansai Intl Airport, with prices starting at $669. Additional round-trip tickets that might be worth considering are offered by Korean Air and Philippine Airlines, with the lowest prices starting at $707 and $728, respectively. These flights start at 36% 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?

    $383 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on Air Canada and ANA, with prices starting from $386 and $394, 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 $888). Flying from Seattle to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,324). 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.

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Alternative routes for Seattle to Kansai Intl

See prices for flight routes from nearby airports that may be better suited for you.
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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$688Average$905FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$716Average$1,133FlexibilityNo cancel feeOn-time81%
China EasternCheapest$719Average$756FlexibilityNo cancel feeOn-time62%
ANACheapest$746Average$1,089FlexibilityNo cancel feeOn-time80%
Air CanadaCheapest$749Average$1,066FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$797Average$905FlexibilityNo cancel feeOn-time69%
STARLUX AirlinesCheapest$918Average$1,105FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$963Average$1,159FlexibilityNo cancel feeOn-time74%
Hawaiian AirlinesCheapest$997Average$1,479FlexibilityNo cancel feeOn-time85%
China AirlinesCheapest$999Average$1,186FlexibilityNo cancel feeOn-time70%

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