Which airport typically offers the quickest layover for flights from Seattle to Osaka Kansai Intl Airport?

Flights via Tokyo (HND) offer the fastest connection on this route, with an average layover time of 2h 19m.

What’s the top layover airport for flights from Seattle to Osaka Kansai Intl Airport?

Honolulu (HNL) – chosen by Cheapflights users on 56% of 1-stop itineraries from Seattle to Osaka Kansai Intl Airport on Cheapflights.

What’s the cheapest layover airport for flights from Seattle to Osaka Kansai Intl Airport?

Honolulu (HNL) is the most affordable 1-stop option, with an average round-trip price of $548.

What’s the fastest layover option from Seattle to Osaka Kansai Intl Airport?

Flights via Tokyo (HND) have the shortest average one-way travel time for 1-stop routes: 13h 35m.

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

United Airlines and Korean Air can get you from Seattle to Osaka Kansai Intl Airport in just under 17h 37m. Your travel time can differ by up to 18h 38m. The distance from Seattle to Osaka Kansai Intl Airport is about 5024 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

Flying on Alaska Airlines is currently your cheapest option to Osaka Kansai Intl Airport, with prices starting at $370. Additional round-trip tickets that might be worth considering are offered by Asiana Airlines and United Airlines, with the lowest prices starting at $595 and $647, respectively. These flights start at 59% 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?

$304 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 ANA and Korean Air, with prices starting from $354 and $355, respectively.

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.

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).

What are the most popular airlines that fly from Seattle to Osaka Kansai Intl Airport?

The most popular airlines flying from Seattle to Osaka Kansai Intl Airport are ANA, Asiana Airlines and Air Canada. Something to consider prior to booking your flight.

Most accurate provider : When it comes to deals on Seattle-Osaka Kansai Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Osaka Kansai Intl Airport flight deals on Cheapflights vs. eDreams >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 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 Seattle-Osaka Kansai Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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. 8 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.

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.

$304+ Flights from Seattle to Osaka Kansai Intl Airport

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Osaka Kansai Intl are usually found in November or September, booked 83 days in advance, depart on a Thursday or Monday and return on a Thursday

Cheap 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 December 15, 2025.

Mon 12/297:00 amSEA - KIX

1 stop18h 45mMultiple Airlines

Fri 1/98:45 pmKIX - SEA

1 stop18h 32mMultiple Airlines

Deal found 12/13

$991

Sun 12/285:50 pmSEA - KIX

1 stop31h 55mMultiple Airlines

Sat 1/108:45 pmKIX - SEA

1 stop16h 22mMultiple Airlines

Deal found 12/13

$1,008

Mon 12/299:05 amSEA - KIX

1 stop40h 40mMultiple Airlines

Thu 1/88:45 pmKIX - SEA

1 stop18h 32mMultiple Airlines

Deal found 12/13

$1,009

Fri 12/263:40 pmSEA - KIX

1 stop13h 40mMultiple Airlines

Sat 1/108:45 pmKIX - SEA

1 stop16h 22mMultiple Airlines

Deal found 12/13

$1,016

Thu 12/252:40 pmSEA - KIX

1 stop35h 05mMultiple Airlines

Fri 1/98:45 pmKIX - SEA

1 stop18h 32mMultiple Airlines

Deal found 12/13

$1,020

Sun 12/283:40 pmSEA - KIX

1 stop13h 40mMultiple Airlines

Thu 1/85:00 pmKIX - SEA

2 stops43h 47mMultiple Airlines

Deal found 12/13

$1,077

Sat 12/277:05 amSEA - KIX

1 stop16h 35mANA

Fri 1/96:35 pmKIX - SEA

1 stop14h 09mANA

Deal found 12/13

$1,081

Fri 12/267:05 amSEA - KIX

1 stop16h 35mMultiple Airlines

Thu 1/87:25 pmKIX - SEA

1 stop35h 30mMultiple Airlines

Deal found 12/13

$1,086

Sun 12/283:40 pmSEA - KIX

1 stop13h 40mMultiple Airlines

Fri 1/99:50 amKIX - SEA

2 stops26h 57mMultiple Airlines

Deal found 12/13

$1,091

Sat 12/277:05 amSEA - KIX

1 stop16h 35mUnited Airlines

Thu 1/86:35 pmKIX - SEA

2 stops34h 06mUnited Airlines

Deal found 12/13

$1,093

Fri 12/263:40 pmSEA - KIX

1 stop13h 40mMultiple Airlines

Fri 1/99:50 amKIX - SEA

2 stops26h 57mMultiple Airlines

Deal found 12/13

$1,094

Best flights from Seattle to Kansai Intl
Discover carefully curated flight deals from Seattle to Kansai Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 15, 2025.

Fri 1/306:03 amSEA - KIX

1 stop17h 37mUnited Airlines

Sun 3/18:20 amKIX - SEA

1 stop22h 00mUnited Airlines

Deal found 12/13

$646

Sat 4/1112:50 pmSEA - KIX

1 stop36h 15mKorean Air

Tue 4/289:05 amKIX - SEA

1 stop17h 35mKorean Air

Deal found 12/15

$664

Fri 1/306:03 amSEA - KIX

1 stop17h 37mUnited Airlines

Mon 3/28:20 amKIX - SEA

1 stop22h 00mUnited Airlines

Deal found 12/13

$646

Fri 4/1712:50 pmSEA - KIX

1 stop36h 15mKorean Air

Mon 4/276:20 pmKIX - SEA

1 stop32h 20mKorean Air

Deal found 12/15

$664

Fri 1/306:03 amSEA - KIX

1 stop17h 37mUnited Airlines

Tue 3/38:20 amKIX - SEA

1 stop22h 00mUnited Airlines

Deal found 12/13

$658

Thu 4/1612:50 pmSEA - KIX

1 stop36h 15mKorean Air

Fri 5/19:05 amKIX - SEA

1 stop17h 35mKorean Air

Deal found 12/15

$664

Sun 2/16:18 amSEA - KIX

1 stop17h 22mUnited Airlines

Thu 2/268:20 amKIX - SEA

1 stop22h 00mUnited Airlines

Deal found 12/13

$661

Fri 4/107:20 amSEA - KIX

2 stops21h 40mKorean Air

Sun 4/196:20 pmKIX - SEA

1 stop32h 20mKorean Air

Deal found 12/13

$666

Tue 4/288:45 amSEA - KIX

2 stops38h 05mUnited Airlines

Fri 5/84:55 pmKIX - SEA

2 stops18h 50mUnited Airlines

Deal found 12/12

$667

Fri 4/172:00 pmSEA - KIX

2 stops39h 00mKorean Air

Thu 4/306:20 pmKIX - SEA

1 stop32h 20mKorean Air

Deal found 12/15

$669

Tue 4/214:37 pmSEA - KIX

2 stops30h 13mUnited Airlines

Thu 4/304:55 pmKIX - SEA

1 stop20h 02mUnited Airlines

Deal found 12/15

$668

Last-minute flights from Seattle to Kansai Intl
Discover last-minute flight deals from Seattle to Kansai Intl. Data last updated December 15, 2025 and is based on user searches.

Tue 1/136:00 amSEA - KIX

1 stop19h 50mJapan Airlines

Tue 1/2010:50 amKIX - SEA

1 stop16h 05mJapan Airlines

Deal found 12/14

$613

Sun 1/1810:05 amSEA - KIX

2 stops17h 30mMultiple Airlines

Tue 1/2710:50 amKIX - SEA

2 stops25h 26mMultiple Airlines

Deal found 12/15

$608

Sun 1/188:25 amSEA - KIX

2 stops20h 55mJapan Airlines

Tue 1/278:00 amKIX - SEA

1 stop18h 55mJapan Airlines

Deal found 12/15

$641

Mon 1/195:50 amSEA - KIX

2 stops35h 20mMultiple Airlines

Mon 1/2610:50 amKIX - SEA

2 stops28h 16mMultiple Airlines

Deal found 12/14

$624

Mon 1/1911:00 amSEA - KIX

1 stop16h 45mKorean Air

Mon 1/269:00 amKIX - SEA

1 stop17h 00mKorean Air

Deal found 12/13

$628

Tue 1/209:55 amSEA - KIX

2 stops17h 40mMultiple Airlines

Tue 1/2710:50 amKIX - SEA

2 stops25h 26mMultiple Airlines

Deal found 12/13

$607

Tue 1/206:00 amSEA - KIX

1 stop19h 50mJapan Airlines

Tue 1/278:00 amKIX - SEA

1 stop18h 55mJapan Airlines

Deal found 12/15

$629

Sat 1/246:00 amSEA - KIX

1 stop19h 50mJapan Airlines

Sat 1/318:00 amKIX - SEA

2 stops25h 47mJapan Airlines

Deal found 12/13

$633

Thu 1/296:00 amSEA - KIX

1 stop19h 50mJapan Airlines

Thu 2/58:00 amKIX - SEA

1 stop18h 55mJapan Airlines

Deal found 12/15

$625

Thu 1/295:50 amSEA - KIX

2 stops21h 45mMultiple Airlines

Thu 2/58:00 amKIX - SEA

2 stops23h 31mMultiple Airlines

Deal found 12/15

$626

One-way flights from Seattle to Kansai Intl
Search for one-way flight options from Seattle to Kansai Intl. Find affordable one-way fares based on user searches. Data last updated December 15, 2025.

Thu 5/1411:10 pmSEA - KIX

1 stop28h 25mPhilippine Airlines

Deal found 12/14

$304

Sun 1/188:00 pmSEA - KIX

2 stops31h 35mMultiple Airlines

Deal found 12/14

$323

Sun 3/1510:30 pmSEA - KIX

1 stop29h 05mPhilippine Airlines

Deal found 12/14

$326

Tue 4/148:05 amSEA - KIX

1 stop18h 40mAlaska Airlines

Deal found 12/14

$327

Wed 2/43:45 pmSEA - KIX

1 stop25h 30mANA

Deal found 12/14

$331

Sat 1/318:06 amSEA - KIX

1 stop17h 44mMultiple Airlines

Deal found 12/15

$339

Sat 1/3111:43 amSEA - KIX

2 stops41h 37mJapan Airlines

Deal found 12/15

$350

Tue 3/1712:00 pmSEA - KIX

1 stop30h 45mKorean Air

Deal found 12/15

$355

Mon 3/3010:10 amSEA - KIX

1 stop14h 15mAir Canada

Deal found 12/14

$357

Find flight deals from Seattle to Kansai Intl

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$607 (Air Canada)
One-way from	$304 (SmartFares)
Popular in	June
Cheapest in	November
Average price	$881

Provider with most accurate pricing for Seattle/Tacoma Intl-Osaka Kansai Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Osaka Kansai Intl flights.

Search Deals

From Seattle/Tacoma Intl to Osaka Kansai Intl

Search Deals

One-way flight from Seattle/Tacoma Intl to Osaka Kansai Intl

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($122 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Osaka Kansai Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 1/30

6:03 am-4:40 pm

1 stop17h 37m

Osaka Kansai Intl

Sun 3/1

8:20 am-1:20 pm

1 stop22h 00m

$646

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 1/30

6:03 am-4:40 pm

1 stop17h 37m

Osaka Kansai Intl

Mon 3/2

8:20 am-1:20 pm

1 stop22h 00m

$646

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 1/30

6:03 am-4:40 pm

1 stop17h 37m

Osaka Kansai Intl

Tue 3/3

8:20 am-1:20 pm

1 stop22h 00m

$658

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 2/1

6:18 am-4:40 pm

1 stop17h 22m

Osaka Kansai Intl

Thu 2/26

8:20 am-1:20 pm

1 stop22h 00m

$661

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sat 4/11

12:50 pm-5:05 pm

1 stop36h 15m

Osaka Kansai Intl

Tue 4/28

9:05 am-10:40 am

1 stop17h 35m

$664

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 4/17

12:50 pm-5:05 pm

1 stop36h 15m

Osaka Kansai Intl

Mon 4/27

6:20 pm-10:40 am

1 stop32h 20m

$664

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Thu 4/16

12:50 pm-5:05 pm

1 stop36h 15m

Osaka Kansai Intl

Fri 5/1

9:05 am-10:40 am

1 stop17h 35m

$664

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 4/10

7:20 am-9:00 pm

2 stops21h 40m

Osaka Kansai Intl

Sun 4/19

6:20 pm-10:40 am

1 stop32h 20m

$666

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 4/28

8:45 am-2:50 pm

2 stops38h 05m

Osaka Kansai Intl

Fri 5/8

4:55 pm-7:45 pm

2 stops18h 50m

$667

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 4/21

4:37 pm-2:50 pm

2 stops30h 13m

Osaka Kansai Intl

Thu 4/30

4:55 pm-8:57 pm

1 stop20h 02m

$668

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 17 results

Compare providers for flights from Seattle to Kansai Intl

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 December.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Ovago	Price Accuracy2 stars	Trust Score*2 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
Expedia	Price Accuracy2 stars	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Osaka Kansai Intl Airport flight deals on Cheapflights vs. eDreams >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 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 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

Prices

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

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 83 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, January is the cheapest month in which you can book a flight from Seattle to Osaka Kansai Intl Airport (average of $370). Flying from Seattle to Osaka Kansai Intl Airport in June is currently the most expensive (average of $983). 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?

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?

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.

Reviews of airlines servicing Kansai Intl

See what other customers who have flown with STARLUX Airlines, ANA, and Korean Air from Seattle to Osaka Kansai Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

STARLUX Airlines

8.9

Very good

243 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

STARLUX Airlines

8.9

Very good

243 reviews

STARLUX Airlines

8.9

Very good

243 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

ANA

8.4

Very good

1,025 reviews

STARLUX Airlines

8.9

Very good

243 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Korean Air

8.4

Very good

1,186 reviews

STARLUX Airlines

8.9

Very good

243 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Asiana Airlines

8.2

Very good

493 reviews

STARLUX Airlines

8.9

Very good

243 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Air Canada

7.1

Good

10,527 reviews

STARLUX Airlines

8.9

Very good

243 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Related info for your journey

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. 8 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.
How long is the flight from Seattle to Osaka Kansai Intl Airport?
United Airlines and Korean Air can get you from Seattle to Osaka Kansai Intl Airport in just under 17h 37m. Your travel time can differ by up to 18h 38m. The distance from Seattle to Osaka Kansai Intl Airport is about 5024 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from Seattle to Osaka Kansai Intl Airport round-trip?
Flying on Alaska Airlines is currently your cheapest option to Osaka Kansai Intl Airport, with prices starting at $370. Additional round-trip tickets that might be worth considering are offered by Asiana Airlines and United Airlines, with the lowest prices starting at $595 and $647, respectively. These flights start at 59% 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?
$304 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 ANA and Korean Air, with prices starting from $354 and $355, 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, January is the cheapest month in which you can book a flight from Seattle to Osaka Kansai Intl Airport (average of $370). Flying from Seattle to Osaka Kansai Intl Airport in June is currently the most expensive (average of $983). 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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Top 8 airlines flying from Seattle to Kansai Intl

Airline	Cheapest	Average	Flexibility	On-time
Alaska Airlines	Cheapest$370	Average$438	FlexibilityNo cancel fee	On-time75%
Asiana Airlines	Cheapest$595	Average$762	FlexibilityNo cancel fee	On-time76%
United Airlines	Cheapest$647	Average$837	FlexibilityNo cancel fee	On-time69%
ANA	Cheapest$657	Average$824	FlexibilityNo cancel fee	On-time80%
Air Canada	Cheapest$669	Average$802	FlexibilityNo cancel fee	On-time67%
Korean Air	Cheapest$716	Average$976	FlexibilityNo cancel fee	On-time81%
China Airlines	Cheapest$1,056	Average$1,167	FlexibilityNo cancel fee	On-time70%
STARLUX Airlines	Cheapest$1,095	Average$1,294	FlexibilityNo cancel fee	On-timeN/A

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$304+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Osaka Kansai Intl are usually found in November or September, booked 83 days in advance, depart on a Thursday or Monday and return on a Thursday

Cheap flight deals from Seattle to Kansai Intl

Cheapest flights from Seattle to Kansai IntlExplore 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 December 15, 2025.

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 December 15, 2025.

Find flight deals from Seattle to Kansai Intl

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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 December.

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.

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?

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

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

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

What’s the top layover airport for flights from Seattle to Osaka Kansai Intl Airport?

What’s the cheapest layover airport for flights from Seattle to Osaka Kansai Intl Airport?

What’s the fastest layover option from Seattle to Osaka Kansai Intl Airport?

Which airport typically offers the quickest layover for flights from Seattle to Osaka Kansai Intl Airport?

Reviews of airlines servicing Kansai Intl

See what other customers who have flown with STARLUX Airlines, ANA, and Korean Air from Seattle to Osaka Kansai Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

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

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

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

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

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Alternative routes for Seattle to Kansai Intl

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Top 8 airlines flying from Seattle to Kansai Intl

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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 December 15, 2025.