Which layover airport has the shortest travel time from Osaka Kansai Intl Airport to Seattle?

Flights connecting via Tokyo (HND) have the shortest average one-way travel time: 11h 50m.

Which layover airport offers the lowest fares from Osaka Kansai Intl Airport to Seattle?

Flights via Vancouver (YVR) offer the lowest average round-trip price of $794.

Which airport is the most popular layover for flights between Osaka Kansai Intl Airport and Seattle?

Vancouver (YVR) was the most common stop: 75% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Osaka Kansai Intl Airport to Seattle?

Tokyo (HND) has the shortest average layover time for this route: 1h 25m.

When did momondo last update prices for flights from Osaka Kansai Intl Airport to Seattle/Tacoma Intl Airport?

Prices for flights from Osaka Kansai Intl Airport to Seattle/Tacoma Intl Airport refresh daily.

How old do you have to be to fly from Osaka Kansai Intl Airport to Seattle/Tacoma Intl Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Osaka Kansai Intl Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$508 Cheap Flights from Osaka Kansai Intl Airport to Seattle in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Osaka Kansai Intl Airport to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:35 pm - 1:40 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

16h 05m1 stop Incheon Intl

1:35 pm - 9:15 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

15h 40m1 stop Incheon Intl

$949Multiple Airlines

Mon, Sep 21 - Mon, Sep 28

12:10 pm - 1:40 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

17h 30m1 stop Incheon Intl

1:35 pm - 9:15 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

15h 40m1 stop Incheon Intl

$955Multiple Airlines

Mon, Sep 21 - Mon, Sep 28

9:00 pm - 6:36 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

37h 36m2 stops Tokyo Narita Los Angeles Los Angeles

4:30 pm - 5:55 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

33h 25m1 stop Tokyo Haneda

$962Multiple Airlines

Mon, Oct 5 - Thu, Oct 22

7:35 am - 2:44 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

24h 09m2 stops Tokyo Narita Vancouver Intl

3:40 pm - 10:20 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

13h 40m1 stop Tokyo Haneda

$979Multiple Airlines

Thu, Nov 19 - Mon, Nov 30

11:15 am - 4:10 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

20h 55m1 stop Taipei City Taiwan Taoyuan Intl

4:30 pm - 5:55 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

33h 25m1 stop Tokyo Haneda

$981Multiple Airlines

Mon, Oct 5 - Thu, Oct 22

11:45 am - 4:10 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

20h 25m1 stop Taipei City Taiwan Taoyuan Intl

4:30 pm - 5:55 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

33h 25m1 stop Tokyo Haneda

$997Multiple Airlines

Sun, Oct 4 - Sun, Oct 11

7:35 am - 2:44 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

24h 09m2 stops Tokyo Narita Vancouver Intl

3:40 pm - 9:50 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

13h 10m1 stop Tokyo Haneda

$998Multiple Airlines

Thu, Nov 19 - Thu, Dec 3

7:35 am - 12:57 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

22h 22m2 stops Tokyo Narita Vancouver Intl

3:40 pm - 9:50 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

13h 10m1 stop Tokyo Haneda

$1,000Multiple Airlines

Wed, Nov 18 - Mon, Nov 30

6:00 pm - 10:47 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

20h 47m1 stop Vancouver Intl

10:50 am - 4:25 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

13h 35m1 stop Vancouver Intl

$1,207Air Canada

Thu, Sep 10 - Mon, Sep 14

6:00 pm - 10:05 amKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

32h 05m1 stop Vancouver Intl

3:00 pm - 4:25 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

33h 25m1 stop Vancouver Intl

$1,207Air Canada

Thu, Sep 24 - Sat, Oct 17

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Cathay Pacific flights from Osaka Kansai Intl Airport to Seattle

Our best Cathay Pacific deals on Osaka Kansai Intl Airport to Seattle flight tickets

Cathay Pacific

Sep 2

KIX4:15 pmOsaka Kansai Intl

34h 05m

2 stops

SEA10:20 amSeattle/Tacoma Intl

Sep 5

SEA12:25 pmSeattle/Tacoma Intl

34h 25m

2 stops

KIX2:50 pmOsaka Kansai Intl

$1,283

Cathay Pacific

Sep 3

KIX4:15 pmOsaka Kansai Intl

32h 53m

3 stops

SEA9:08 amSeattle/Tacoma Intl

Sep 5

SEA12:25 pmSeattle/Tacoma Intl

34h 25m

2 stops

KIX2:50 pmOsaka Kansai Intl

$1,497

Cathay Pacific

Sep 2

KIX4:15 pmOsaka Kansai Intl

31h 53m

3 stops

SEA8:08 amSeattle/Tacoma Intl

Sep 5

SEA5:59 pmSeattle/Tacoma Intl

28h 51m

3 stops

KIX2:50 pmOsaka Kansai Intl

$1,625

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Mon 9/21

1:35 pm-1:40 pm

1 stop16h 05m

Seattle/Tacoma Intl

Mon 9/28

1:35 pm-9:15 pm

1 stop15h 40m

$949

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Mon 9/21

12:10 pm-1:40 pm

1 stop17h 30m

Seattle/Tacoma Intl

Mon 9/28

1:35 pm-9:15 pm

1 stop15h 40m

$955

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Mon 10/5

9:00 pm-6:36 pm

2 stops37h 36m

Seattle/Tacoma Intl

Thu 10/22

4:30 pm-5:55 pm

1 stop33h 25m

$962

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Thu 11/19

7:35 am-2:44 pm

2 stops24h 09m

Seattle/Tacoma Intl

Mon 11/30

3:40 pm-10:20 pm

1 stop13h 40m

$979

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Mon 10/5

11:15 am-4:10 pm

1 stop20h 55m

Seattle/Tacoma Intl

Thu 10/22

4:30 pm-5:55 pm

1 stop33h 25m

$981

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Sun 10/4

11:45 am-4:10 pm

1 stop20h 25m

Seattle/Tacoma Intl

Sun 10/11

4:30 pm-5:55 pm

1 stop33h 25m

$997

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Thu 11/19

7:35 am-2:44 pm

2 stops24h 09m

Seattle/Tacoma Intl

Thu 12/3

3:40 pm-9:50 pm

1 stop13h 10m

$998

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Wed 11/18

7:35 am-12:57 pm

2 stops22h 22m

Seattle/Tacoma Intl

Mon 11/30

3:40 pm-9:50 pm

1 stop13h 10m

$1,000

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Thu 9/10

6:00 pm-10:47 pm

1 stop20h 47m

Seattle/Tacoma Intl

Mon 9/14

10:50 am-4:25 pm

1 stop13h 35m

$1,207

OsakaSeattle

KIX Osaka Kansai Intl - SEA Seattle/Tacoma Intl

KIXSEA

Osaka Kansai Intl

Thu 9/24

6:00 pm-10:05 am

1 stop32h 05m

Seattle/Tacoma Intl

Sat 10/17

3:00 pm-4:25 pm

1 stop33h 25m

$1,207

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Osaka Kansai Intl Airport to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Layovers

How have Osaka Kansai Intl Airport to Seattle flight prices changed over time?

As of August 2026, prices for Osaka Kansai Intl Airport to Seattle flights are approximately 15% cheaper when compared to flights at the same time last year.

When to book flights from Osaka Kansai Intl Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Osaka Kansai Intl Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Osaka Kansai Intl Airport to Seattle (KIX to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Osaka Kansai Intl Airport to Seattle

Best Price Found	$508
Fastest flight time	18h 40m
Direct flights	None

The best one-way flight to Seattle from Osaka Kansai Intl Airport in the past 72 hours is $508. The best round-trip flight deal from Osaka Kansai Intl Airport to Seattle found on momondo in the last 72 hours is $949.

The fastest flight from Osaka Kansai Intl Airport to Seattle takes 18h 40m

There are no direct flights from Osaka Kansai Intl Airport to Seattle. There are no popular flight routes from Osaka Kansai Intl Airport to Seattle.

Search flight deals

Frequently asked questions about flying from Osaka Kansai Intl Airport to Seattle

How far is Osaka Kansai Intl to Seattle/Tacoma Intl by plane?
The distance between Osaka Kansai Intl and Seattle/Tacoma Intl is about 5017.2 mi. By plane, this route typically takes 18h 40m.
When did momondo last update prices for flights from Osaka Kansai Intl Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Osaka Kansai Intl Airport to Seattle/Tacoma Intl Airport refresh daily.
How many operators does momondo search for flights from Osaka Kansai Intl Airport to Seattle/Tacoma Intl Airport?
There is 1 operator available for flights from Osaka Kansai Intl Airport to Seattle/Tacoma Intl Airport as of August 2026.
How old do you have to be to fly from Osaka Kansai Intl Airport to Seattle/Tacoma Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Osaka Kansai Intl Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Osaka Kansai Intl Airport to Seattle?
momondo data reveals that the most frequently booked airline on the route from Osaka Kansai Intl Airport to Seattle is Air Canada, representing 100% of all bookings.

Best airlines flying from Osaka Kansai Intl Airport to Seattle

Compare and see reviews for airlines that fly from Osaka Kansai Intl Airport to Seattle with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $794	Free Cancellation	Rating 7.1 11,509 reviews		Search Air Canada flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Kent

Olympia

Lynnwood

Redmond

Lakewood

Federal Way

Puyallup

Fife

Tukwila

Cle Elum

Marysville

Kirkland

Lacey

Shoreline

Centralia

Why use momondo?

Why should I use momondo to find a flight deal from Osaka to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Osaka to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Osaka to Seattle with flexible booking policies on momondo?

Yes. All flights to Seattle from Osaka on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Osaka to Seattle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Osaka to Seattle.

I’m not ready to book a flight from Osaka to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Osaka to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.