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

Flying on Asiana Airlines is currently your cheapest option to Osaka Kansai Intl Airport, with prices starting at $648. Additional round-trip tickets that might be worth considering are offered by Delta and Air Canada, with the lowest prices starting at $649 and $669, respectively. These flights start at 35% lower than the current average price 3 months from now.

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 Air Canada, EVA Air and China Airlines. Something to consider prior to booking your flight.

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

Wednesday is generally a great day to depart. Flying on this day could help you save up to 40%.

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

To save on the cost of your flight from Seattle to Osaka Kansai Intl Airport, book at least 22 days before your planned departure. Booking around this time can save you about 7% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $728 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $781.

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

Our data shows that August tends to be the cheapest month to fly to Osaka Kansai Intl Airport from Seattle. Users have commonly found prices around $970 for the month, but tickets can be as low as $720. Due to multiple factors, prepare for potentially higher prices in December.

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.

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.

$306+ 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 September or February, booked 20 days in advance, depart on a Thursday or Monday and return on a Thursday

Cheap flight deals from Seattle to Kansai Intl

Round-trip from	$591 (oojo)
One-way from	$306 (oojo)
Popular in	December
Cheapest in	September
Average price	$1,031

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 ($88 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($45 potential savings vs. average RT price).

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Average for round-trip flights in August 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 August 16, 2025.

Mon 9/152:15 pmSEA - KIX

1 stop35h 35mAsiana Airlines

Mon 9/299:10 amKIX - SEA

1 stop19h 20mAsiana Airlines

Deal found 8/16

$591

Sun 8/242:30 pmSEA - KIX

1 stop35h 20mAsiana Airlines

Sat 9/610:50 amKIX - SEA

1 stop17h 40mAsiana Airlines

Deal found 8/15

$592

Sun 9/72:15 pmSEA - KIX

1 stop27h 25mAsiana Airlines

Mon 9/229:10 amKIX - SEA

1 stop19h 20mAsiana Airlines

Deal found 8/16

$599

Mon 9/157:00 amSEA - KIX

1 stop15h 50mUnited Airlines

Wed 10/18:30 amKIX - SEA

1 stop21h 55mUnited Airlines

Deal found 8/14

$604

Tue 9/167:00 amSEA - KIX

1 stop15h 50mANA

Tue 9/305:30 pmKIX - SEA

1 stop12h 55mANA

Deal found 8/14

$608

Sat 12/61:32 pmSEA - KIX

2 stops52h 13mKorean Air

Mon 12/156:10 pmKIX - SEA

2 stops43h 25mKorean Air

Deal found 8/15

$614

Sun 9/214:30 pmSEA - KIX

1 stop13h 20mANA

Tue 9/235:30 pmKIX - SEA

1 stop12h 55mANA

Deal found 8/16

$615

Sun 9/77:00 amSEA - KIX

1 stop15h 50mANA

Sun 9/216:35 pmKIX - SEA

1 stop11h 50mANA

Deal found 8/14

$622

Sat 9/67:34 pmSEA - KIX

1 stop27h 16mANA

Thu 9/116:35 pmKIX - SEA

1 stop11h 50mANA

Deal found 8/14

$624

Sun 9/77:00 amSEA - KIX

1 stop15h 50mANA

Fri 9/196:35 pmKIX - SEA

1 stop11h 50mANA

Deal found 8/16

$627

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 August 16, 2025.

Mon 9/152:15 pmSEA - KIX

1 stop35h 35mAsiana Airlines

Mon 9/299:10 amKIX - SEA

1 stop19h 20mAsiana Airlines

Deal found 8/15

$591

Sat 12/61:32 pmSEA - KIX

2 stops52h 13mKorean Air

Mon 12/156:10 pmKIX - SEA

1 stop31h 50mKorean Air

Deal found 8/15

$614

Sun 9/77:00 amSEA - KIX

1 stop15h 50mANA

Fri 9/196:35 pmKIX - SEA

1 stop11h 50mANA

Deal found 8/16

$627

Mon 9/82:15 pmSEA - KIX

1 stop33h 35mAsiana Airlines

Mon 9/229:10 amKIX - SEA

1 stop19h 20mAsiana Airlines

Deal found 8/16

$592

Mon 9/152:15 pmSEA - KIX

1 stop35h 35mAsiana Airlines

Thu 10/29:10 amKIX - SEA

1 stop19h 20mAsiana Airlines

Deal found 8/15

$599

Tue 11/412:10 amSEA - KIX

1 stop16h 30mAsiana Airlines

Thu 11/135:00 pmKIX - SEA

1 stop13h 55mAsiana Airlines

Deal found 8/16

$627

Sun 9/142:15 pmSEA - KIX

1 stop27h 25mAsiana Airlines

Sun 9/2110:50 amKIX - SEA

1 stop17h 40mAsiana Airlines

Deal found 8/16

$628

Mon 9/222:15 pmSEA - KIX

1 stop27h 25mAsiana Airlines

Mon 9/2910:50 amKIX - SEA

1 stop17h 40mAsiana Airlines

Deal found 8/16

$628

Mon 11/1012:10 amSEA - KIX

1 stop27h 45mAsiana Airlines

Thu 11/2010:50 amKIX - SEA

1 stop20h 05mAsiana Airlines

Deal found 8/16

$628

Sat 11/812:10 amSEA - KIX

1 stop27h 45mAsiana Airlines

Tue 11/185:00 pmKIX - SEA

1 stop13h 55mAsiana Airlines

Deal found 8/15

$628

Last-minute flights from Seattle to Kansai Intl
Discover last-minute flight deals from Seattle to Kansai Intl. Data last updated August 16, 2025 and is based on user searches.

Sat 8/237:00 amSEA - KIX

1 stop15h 50mANA

Sat 8/306:35 pmKIX - SEA

1 stop11h 50mANA

Deal found 8/15

$722

Sat 8/237:34 pmSEA - KIX

1 stop27h 16mUnited Airlines

Sat 8/304:55 pmKIX - SEA

2 stops21h 20mUnited Airlines

Deal found 8/15

$726

Sat 8/231:15 amSEA - KIX

1 stop20h 45mSTARLUX Airlines

Sat 9/63:10 pmKIX - SEA

1 stop17h 00mSTARLUX Airlines

Deal found 8/15

$911

Sun 8/242:30 pmSEA - KIX

1 stop35h 20mAsiana Airlines

Sat 9/610:50 amKIX - SEA

1 stop17h 40mAsiana Airlines

Deal found 8/15

$592

Sun 8/247:00 amSEA - KIX

2 stops17h 50mANA

Sat 9/66:35 pmKIX - SEA

1 stop11h 50mANA

Deal found 8/15

$638

Sun 8/247:28 amSEA - KIX

2 stops21h 32mDelta

Sat 9/612:35 pmKIX - SEA

2 stops22h 11mDelta

Deal found 8/15

$910

Tue 8/267:00 amSEA - KIX

1 stop15h 50mANA

Wed 9/36:35 pmKIX - SEA

1 stop11h 50mANA

Deal found 8/14

$636

Tue 8/267:00 amSEA - KIX

1 stop15h 50mUnited Airlines

Wed 9/34:50 pmKIX - SEA

2 stops21h 25mUnited Airlines

Deal found 8/16

$655

Tue 8/263:05 pmSEA - KIX

2 stops28h 15mKorean Air

Wed 9/312:35 pmKIX - SEA

2 stops19h 25mKorean Air

Deal found 8/16

$670

Tue 8/267:59 pmSEA - KIX

3 stops26h 56mCathay Pacific

Wed 9/39:10 amKIX - SEA

2 stops23h 44mCathay Pacific

Deal found 8/15

$926

Sat 9/67:34 pmSEA - KIX

1 stop27h 16mANA

Thu 9/116:35 pmKIX - SEA

1 stop11h 50mANA

Deal found 8/14

$624

Sun 9/72:15 pmSEA - KIX

1 stop27h 25mAsiana Airlines

Tue 9/2310:50 amKIX - SEA

1 stop17h 40mAsiana Airlines

Deal found 8/16

$599

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 August 16, 2025.

Sun 9/142:15 pmSEA - KIX

1 stop33h 35mAsiana Airlines

Deal found 8/15

$306

Wed 9/242:15 pmSEA - KIX

1 stop27h 25mAsiana Airlines

Deal found 8/15

$328

Mon 9/2912:50 pmSEA - KIX

1 stop16h 10mKorean Air

Deal found 8/15

$333

Sat 9/272:15 pmSEA - KIX

1 stop33h 35mAsiana Airlines

Deal found 8/14

$341

Tue 9/235:14 pmSEA - KIX

2 stops29h 36mUnited Airlines

Deal found 8/15

$346

Wed 9/243:45 pmSEA - KIX

2 stops33h 20mKorean Air

Deal found 8/15

$356

Sun 9/146:25 amSEA - KIX

2 stops40h 25mUnited Airlines

Deal found 8/15

$365

Sat 9/277:55 pmSEA - KIX

2 stops33h 05mKorean Air

Deal found 8/15

$369

Sat 9/278:45 pmSEA - KIX

1 stop30h 00mAlaska Airlines

Deal found 8/15

$375

Thu 9/253:45 pmSEA - KIX

2 stops33h 20mKorean Air

Deal found 8/15

$376

Wed 10/84:30 pmSEA - KIX

1 stop24h 00mANA

Deal found 8/15

$404

Sat 11/13:40 pmSEA - KIX

1 stop34h 00mAir Canada

Deal found 8/14

$411

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

Mon 9/15

2:15 pm-5:50 pm

1 stop35h 35m

Osaka Kansai Intl

Mon 9/29

9:10 am-12:30 pm

1 stop19h 20m

$591

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 9/8

2:15 pm-3:50 pm

1 stop33h 35m

Osaka Kansai Intl

Mon 9/22

9:10 am-12:30 pm

1 stop19h 20m

$592

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 9/15

2:15 pm-5:50 pm

1 stop35h 35m

Osaka Kansai Intl

Thu 10/2

9:10 am-12:30 pm

1 stop19h 20m

$599

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sat 12/6

1:32 pm-10:45 am

2 stops52h 13m

Osaka Kansai Intl

Mon 12/15

6:10 pm-9:00 am

1 stop31h 50m

$614

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 9/7

7:00 am-2:50 pm

1 stop15h 50m

Osaka Kansai Intl

Fri 9/19

6:35 pm-2:25 pm

1 stop11h 50m

$627

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 11/4

12:10 am-9:40 am

1 stop16h 30m

Osaka Kansai Intl

Thu 11/13

5:00 pm-1:55 pm

1 stop13h 55m

$627

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 9/14

2:15 pm-9:40 am

1 stop27h 25m

Osaka Kansai Intl

Sun 9/21

10:50 am-12:30 pm

1 stop17h 40m

$628

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 9/22

2:15 pm-9:40 am

1 stop27h 25m

Osaka Kansai Intl

Mon 9/29

10:50 am-12:30 pm

1 stop17h 40m

$628

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 11/10

12:10 am-8:55 pm

1 stop27h 45m

Osaka Kansai Intl

Thu 11/20

10:50 am-1:55 pm

1 stop20h 05m

$628

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sat 11/8

12:10 am-8:55 pm

1 stop27h 45m

Osaka Kansai Intl

Tue 11/18

5:00 pm-1:55 pm

1 stop13h 55m

$628

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Showing 1-10 of 19 results

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?

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 $873). Flying from Seattle to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,313). 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.

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

Tokyo (HND) – chosen by Cheapflights users on 60% 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?

Tokyo (HND) is the most affordable 1-stop option, with an average round-trip price of $778.

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.

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 24m.

Reviews of airlines servicing Kansai Intl

See what other customers who have flown with STARLUX Airlines, ANA, and China Airlines 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

9.0

Wonderful

206 reviews

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

9.0

Wonderful

206 reviews

STARLUX Airlines

9.0

Wonderful

206 reviews

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.

ANA

8.4

Very good

933 reviews

STARLUX Airlines

9.0

Wonderful

206 reviews

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

764 reviews

STARLUX Airlines

9.0

Wonderful

206 reviews

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.

Asiana Airlines

8.2

Very good

473 reviews

STARLUX Airlines

9.0

Wonderful

206 reviews

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.

Air Canada

7.1

Good

9,966 reviews

STARLUX Airlines

9.0

Wonderful

206 reviews

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

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 Asiana Airlines is currently your cheapest option to Osaka Kansai Intl Airport, with prices starting at $648. Additional round-trip tickets that might be worth considering are offered by Delta and Air Canada, with the lowest prices starting at $649 and $669, respectively. These flights start at 35% lower than the current average price 3 months from now.
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 $873). Flying from Seattle to Osaka Kansai Intl Airport in June is currently the most expensive (average of $1,313). 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 10 airlines flying from Seattle to Kansai Intl

Airline	Cheapest	Average	Flexibility	On-time
Asiana Airlines	Cheapest$648	Average$877	FlexibilityNo cancel fee	On-time76%
Delta	Cheapest$649	Average$972	FlexibilityNo cancel fee	On-timeN/A
Air Canada	Cheapest$669	Average$848	FlexibilityNo cancel fee	On-time67%
ANA	Cheapest$704	Average$987	FlexibilityNo cancel fee	On-time80%
Korean Air	Cheapest$716	Average$1,133	FlexibilityNo cancel fee	On-time81%
China Eastern	Cheapest$719	Average$756	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$797	Average$905	FlexibilityNo cancel fee	On-time69%
STARLUX Airlines	Cheapest$918	Average$1,105	FlexibilityNo cancel fee	On-timeN/A
EVA Air	Cheapest$963	Average$1,159	FlexibilityNo cancel fee	On-time74%
China Airlines	Cheapest$999	Average$1,186	FlexibilityNo cancel fee	On-time70%

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$306+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Kansai Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Osaka Kansai Intl are usually found in September or February, booked 20 days in advance, depart on a Thursday or Monday and return on a Thursday

Cheap flight deals from Seattle to Kansai Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 August 16, 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 August 16, 2025.

Cheapflights Fare Finder

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

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?

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 August 8, 2025.

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?

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 August 16, 2025.

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.

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

Share of 1-stop round-trip flights from Seattle to Osaka Kansai Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

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

Average round-trip fare for 1-stop flights from Seattle to Osaka Kansai Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

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

Shortest average travel time for 1-stop one-way flights from Seattle to Osaka Kansai Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

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

Average layover duration for 1-stop one-way flights from Seattle to Osaka Kansai Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Kansai Intl

See what other customers who have flown with STARLUX Airlines, ANA, and China Airlines 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.

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Alternative routes for Seattle to Kansai Intl

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Top 10 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 August 16, 2025.