Cheap flights from Osaka Kansai Intl Airport to Seattle from $434

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Osaka Kansai Intl Airport to Seattle departing on 9/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Osaka Kansai Intl Airport to Seattle

Cheap round-trip flights

Asiana Airlines Logo
9:10 am - 12:30 pmKIX-SEA
19h 20m1 stop
Asiana Airlines Logo
2:15 pm - 3:50 pmSEA-KIX
33h 35m1 stop
$717Asiana Airlines
Find Deal
Sun, Sep 14 - Sun, Sep 21
 Logo
12:25 pm - 2:45 pmKIX-SEA
18h 20m1 stop
 Logo
2:50 pm - 10:50 pmSEA-KIX
16h 00m1 stop
Sun, Sep 14 - Sun, Sep 21
 Logo
4:00 pm - 2:45 pmKIX-SEA
14h 45m1 stop
 Logo
2:50 pm - 10:50 pmSEA-KIX
16h 00m1 stop
Thu, Sep 18 - Wed, Sep 24
Philippine Airlines Logo
3:20 pm - 7:15 pmKIX-SEA
19h 55m1 stop
Philippine Airlines Logo
11:35 pm - 2:20 pmSEA-KIX
22h 45m1 stop
$756Philippine Airlines
Find Deal
Fri, Sep 19 - Wed, Sep 24
STARLUX Airlines Logo
1:25 pm - 4:10 pmKIX-SEA
18h 45m1 stop
STARLUX Airlines Logo
1:15 am - 2:00 pmSEA-KIX
20h 45m1 stop
$782STARLUX Airlines
Find Deal
Tue, Sep 16 - Mon, Sep 22
China Airlines Logo
2:00 pm - 7:45 pmKIX-SEA
21h 45m1 stop
China Airlines Logo
1:10 am - 12:00 pmSEA-KIX
18h 50m1 stop
$815China Airlines
Find Deal
Sun, Sep 14 - Sat, Sep 20
Philippine Airlines Logo
3:20 pm - 7:15 pmKIX-SEA
19h 55m1 stop
Philippine Airlines Logo
11:35 pm - 7:40 pmSEA-KIX
28h 05m1 stop
$818Philippine Airlines
Find Deal
Wed, Aug 20 - Wed, Sep 3
STARLUX Airlines Logo
3:10 pm - 4:10 pmKIX-SEA
17h 00m1 stop
STARLUX Airlines Logo
1:15 am - 12:15 pmSEA-KIX
19h 00m1 stop
$838STARLUX Airlines
Find Deal
Sat, Sep 20 - Sun, Sep 21
China Airlines Logo
1:10 pm - 8:07 amKIX-SEA
34h 57m2 stops
China Airlines Logo
1:40 am - 12:00 pmSEA-KIX
18h 20m1 stop
$928China Airlines
Find Deal
Wed, Aug 20 - Tue, Sep 2
EVA Air Logo
11:10 am - 7:50 pmKIX-SEA
24h 40m1 stop
EVA Air Logo
1:30 am - 10:10 amSEA-KIX
16h 40m1 stop
$971EVA Air
Find Deal
Thu, Aug 21 - Sun, Sep 7

Asiana Airlines flights from Osaka Kansai Intl Airport to Seattle

Our best Asiana Airlines deals on Osaka Kansai Intl Airport to Seattle flight tickets
Asiana Airlines
Sep 14
KIX9:10 amOsaka Kansai Intl
19h 20m
1 stop
SEA12:30 pmSeattle/Tacoma Intl
Sep 21
SEA2:15 pmSeattle/Tacoma Intl
33h 35m
1 stop
KIX3:50 pmOsaka Kansai Intl
Asiana Airlines
Nov 6
KIX9:00 amOsaka Kansai Intl
21h 55m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
Nov 9
SEA12:10 amSeattle/Tacoma Intl
27h 45m
1 stop
KIX8:55 pmOsaka Kansai Intl
Asiana Airlines
Aug 21
KIX10:50 amOsaka Kansai Intl
17h 55m
1 stop
SEA12:45 pmSeattle/Tacoma Intl
Sep 8
SEA2:15 pmSeattle/Tacoma Intl
14h 50m
1 stop
KIX9:05 pmOsaka Kansai Intl

STARLUX Airlines flights from Osaka Kansai Intl Airport to Seattle

Our best STARLUX Airlines deals on Osaka Kansai Intl Airport to Seattle flight tickets
STARLUX Airlines
Sep 16
KIX1:25 pmOsaka Kansai Intl
18h 45m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
Sep 22
SEA1:15 amSeattle/Tacoma Intl
20h 45m
1 stop
KIX2:00 pmOsaka Kansai Intl
STARLUX Airlines
Sep 20
KIX3:10 pmOsaka Kansai Intl
17h 00m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
Sep 22
SEA1:15 amSeattle/Tacoma Intl
19h 00m
1 stop
KIX12:15 pmOsaka Kansai Intl
STARLUX Airlines
Sep 19
KIX3:10 pmOsaka Kansai Intl
17h 00m
1 stop
SEA4:10 pmSeattle/Tacoma Intl
Sep 21
SEA1:15 amSeattle/Tacoma Intl
19h 00m
1 stop
KIX12:15 pmOsaka Kansai Intl

momondo Fare Finder

 
Customize your flight search to find flights from Osaka Kansai Intl Airport to Seattle 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, momondo users made 832,500 searches. Data last updated August 2, 2025.
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

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sun 9/14

9:10 am-12:30 pm

1 stop19h 20m

Seattle/Tacoma Intl

Sun 9/21

2:15 pm-3:50 pm

1 stop33h 35m

$717

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sun 9/14

12:25 pm-2:45 pm

1 stop18h 20m

Seattle/Tacoma Intl

Sun 9/21

2:50 pm-10:50 pm

1 stop16h 00m

$719

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 9/18

4:00 pm-2:45 pm

1 stop14h 45m

Seattle/Tacoma Intl

Wed 9/24

2:50 pm-10:50 pm

1 stop16h 00m

$729

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Fri 9/19

3:20 pm-7:15 pm

1 stop19h 55m

Seattle/Tacoma Intl

Wed 9/24

11:35 pm-2:20 pm

1 stop22h 45m

$756

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 9/16

1:25 pm-4:10 pm

1 stop18h 45m

Seattle/Tacoma Intl

Mon 9/22

1:15 am-2:00 pm

1 stop20h 45m

$782

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sun 9/14

2:00 pm-7:45 pm

1 stop21h 45m

Seattle/Tacoma Intl

Sat 9/20

1:10 am-12:00 pm

1 stop18h 50m

$815

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 8/20

3:20 pm-7:15 pm

1 stop19h 55m

Seattle/Tacoma Intl

Wed 9/3

11:35 pm-7:40 pm

1 stop28h 05m

$818

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 9/20

3:10 pm-4:10 pm

1 stop17h 00m

Seattle/Tacoma Intl

Sun 9/21

1:15 am-12:15 pm

1 stop19h 00m

$838

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 8/20

1:10 pm-8:07 am

2 stops34h 57m

Seattle/Tacoma Intl

Tue 9/2

1:40 am-12:00 pm

1 stop18h 20m

$928

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 8/21

11:10 am-7:50 pm

1 stop24h 40m

Seattle/Tacoma Intl

Sun 9/7

1:30 am-10:10 am

1 stop16h 40m

$971

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

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

What is the typical price of a round-trip flight between Osaka Kansai Intl Airport and Seattle?

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Osaka Kansai Intl Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $916. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Osaka Kansai Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,184.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Osaka Kansai Intl Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,034 when looking at flights departing in the morning. Flights to Seattle are more costly in the afternoon, with an average ticket price of $1,134. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

$434

Fastest flight time

14h 30m

Direct flights

None

Airports in Seattle

1 airport
The best one-way flight to Seattle from Osaka Kansai Intl Airport in the past 72 hours is $434. The best round-trip flight deal from Osaka Kansai Intl Airport to Seattle found on momondo in the last 72 hours is $717.
The fastest flight from Osaka Kansai Intl Airport to Seattle takes 14h 30m
There are no direct flights from Osaka Kansai Intl Airport to Seattle. Popular non-direct route for this connection is Osaka Kansai Intl Airport - Seattle/Tacoma Intl Airport.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • 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 14h 30m.

  • 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?

  • 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?


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
Asiana AirlinesPriceFrom $852Free CancellationRating
8.2
468 reviews
Search Asiana Airlines flights

Traveling to a place near Seattle?

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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.


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Thu 8/7
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