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Cheap flights from Osaka Kansai Intl Airport to Seattle from $394

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 3/13. 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

Enter your travel dates to find the best prices.
Air Canada Logo
6:00 pm - 6:32 pm
KIX
-
SEA
16h 32m
1 stop
Air Canada Logo
5:40 am - 4:25 pm
SEA
-
KIX
18h 45m
1 stop
$724Air Canada
Tue, Jun 23 - Wed, Sep 16
Air Canada Logo
6:00 pm - 6:32 pm
KIX
-
SEA
16h 32m
1 stop
Air Canada Logo
10:30 am - 4:25 pm
SEA
-
KIX
13h 55m
1 stop
$731Air Canada
Tue, Jun 23 - Wed, Sep 16
Multiple Airlines Logo
7:50 pm - 9:15 am
KIX
-
SEA
53h 25m
2 stops
Multiple Airlines Logo
3:00 pm - 4:25 pm
SEA
-
KIX
33h 25m
1 stop
$755Multiple Airlines
Sun, Jun 14 - Tue, Jun 23
Multiple Airlines Logo
2:35 pm - 9:00 am
KIX
-
SEA
34h 25m
1 stop
Multiple Airlines Logo
10:30 pm - 7:35 pm
SEA
-
KIX
29h 05m
1 stop
$783Multiple Airlines
Fri, Mar 13 - Sun, Mar 22
China Airlines Logo
1:10 pm - 7:15 pm
KIX
-
SEA
22h 05m
1 stop
China Airlines Logo
1:15 am - 12:00 pm
SEA
-
KIX
18h 45m
1 stop
$802China Airlines
Sun, Jun 14 - Sun, Jun 21
Air Canada Logo
7:25 pm - 9:35 am
KIX
-
SEA
30h 10m
1 stop
Air Canada Logo
3:40 pm - 5:40 pm
SEA
-
KIX
34h 00m
1 stop
$803Air Canada
Thu, Mar 12 - Sun, Mar 22
China Airlines Logo
1:10 pm - 7:15 pm
KIX
-
SEA
22h 05m
1 stop
China Airlines Logo
1:15 am - 6:05 pm
SEA
-
KIX
24h 50m
1 stop
$808China Airlines
Sun, Jun 14 - Sun, Jun 21
China Airlines Logo
1:10 pm - 7:15 pm
KIX
-
SEA
22h 05m
1 stop
China Airlines Logo
1:15 am - 6:05 pm
SEA
-
KIX
24h 50m
1 stop
$809China Airlines
Sun, Jun 14 - Mon, Jun 22
Asiana Airlines Logo
7:25 pm - 2:55 pm
KIX
-
SEA
35h 30m
1 stop
Asiana Airlines Logo
12:10 am - 6:05 pm
SEA
-
KIX
25h 55m
1 stop
$834Asiana Airlines
Sun, Mar 15 - Sat, Mar 21
Multiple Airlines Logo
6:00 pm - 6:32 pm
KIX
-
SEA
16h 32m
1 stop
Multiple Airlines Logo
5:40 am - 9:00 pm
SEA
-
KIX
23h 20m
2 stops
$839Multiple Airlines
Tue, Jun 23 - Wed, Sep 16

China Airlines flights from Osaka Kansai Intl Airport to Seattle

Our best China Airlines deals on Osaka Kansai Intl Airport to Seattle flight tickets
China Airlines
Jun 14
KIX1:10 pmOsaka Kansai Intl
22h 05m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
Jun 21
SEA1:15 amSeattle/Tacoma Intl
18h 45m
1 stop
KIX12:00 pmOsaka Kansai Intl
$802
China Airlines
Jun 14
KIX1:10 pmOsaka Kansai Intl
22h 05m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
Jun 21
SEA1:15 amSeattle/Tacoma Intl
24h 50m
1 stop
KIX6:05 pmOsaka Kansai Intl
$808
China Airlines
Jun 14
KIX1:10 pmOsaka Kansai Intl
22h 05m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
Jun 22
SEA1:15 amSeattle/Tacoma Intl
24h 50m
1 stop
KIX6:05 pmOsaka Kansai Intl
$809

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
Mar 15
KIX10:30 amOsaka Kansai Intl
20h 25m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
Mar 21
SEA12:10 amSeattle/Tacoma Intl
25h 55m
1 stop
KIX6:05 pmOsaka Kansai Intl
$834
Asiana Airlines
Mar 13
KIX10:30 amOsaka Kansai Intl
20h 25m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
Mar 21
SEA12:10 amSeattle/Tacoma Intl
25h 55m
1 stop
KIX6:05 pmOsaka Kansai Intl
$899
Asiana Airlines
Mar 19
KIX7:25 pmOsaka Kansai Intl
35h 30m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
Mar 25
SEA12:10 amSeattle/Tacoma Intl
25h 55m
1 stop
KIX6:05 pmOsaka Kansai Intl
$995

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 February 3, 2026.
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

Tue 6/23

6:00 pm-6:32 pm

1 stop16h 32m

Seattle/Tacoma Intl

Wed 9/16

5:40 am-4:25 pm

1 stop18h 45m

$724

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/23

6:00 pm-6:32 pm

1 stop16h 32m

Seattle/Tacoma Intl

Wed 9/16

10:30 am-4:25 pm

1 stop13h 55m

$731

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sun 6/14

7:50 pm-9:15 am

2 stops53h 25m

Seattle/Tacoma Intl

Tue 6/23

3:00 pm-4:25 pm

1 stop33h 25m

$755

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Fri 3/13

2:35 pm-9:00 am

1 stop34h 25m

Seattle/Tacoma Intl

Sun 3/22

10:30 pm-7:35 pm

1 stop29h 05m

$783

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sun 6/14

1:10 pm-7:15 pm

1 stop22h 05m

Seattle/Tacoma Intl

Sun 6/21

1:15 am-12:00 pm

1 stop18h 45m

$802

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 3/12

7:25 pm-9:35 am

1 stop30h 10m

Seattle/Tacoma Intl

Sun 3/22

3:40 pm-5:40 pm

1 stop34h 00m

$803

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sun 6/14

1:10 pm-7:15 pm

1 stop22h 05m

Seattle/Tacoma Intl

Sun 6/21

1:15 am-6:05 pm

1 stop24h 50m

$808

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sun 6/14

1:10 pm-7:15 pm

1 stop22h 05m

Seattle/Tacoma Intl

Mon 6/22

1:15 am-6:05 pm

1 stop24h 50m

$809

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sun 3/15

7:25 pm-2:55 pm

1 stop35h 30m

Seattle/Tacoma Intl

Sat 3/21

12:10 am-6:05 pm

1 stop25h 55m

$834

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/23

6:00 pm-6:32 pm

1 stop16h 32m

Seattle/Tacoma Intl

Wed 9/16

5:40 am-9:00 pm

2 stops23h 20m

$839

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

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

As of February 2026, prices for Osaka Kansai Intl Airport to Seattle flights are approximately 1% more expensive 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

Fastest flight time

11h 36m

Direct flights

None
The fastest flight from Osaka Kansai Intl Airport to Seattle takes 11h 36m
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

  • 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 11h 36m.

  • 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.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Redmond
Puyallup
Cle Elum
Tukwila
Lakewood
Federal Way
Westport
Kirkland
Centralia
Fife
Tumwater

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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