Cheap flights from Seattle to Osaka from $406
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Osaka departing on 10/26. 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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Not ready to book? to track prices.Cathay Pacific flights from Seattle to Osaka Kansai Intl Airport
Our best Cathay Pacific deals on Seattle to Osaka Kansai Intl Airport flight tickets
ANA flights from Seattle to Osaka Kansai Intl Airport
Our best ANA deals on Seattle to Osaka Kansai Intl Airport flight tickets
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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
SeattleOsaka
SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl
SEAKIX
Seattle/Tacoma Intl
Mon 10/26
11:25 am-6:20 am
1 stop26h 55m
Osaka Kansai Intl
Wed 11/11
6:05 pm-8:45 am
1 stop31h 40m
SeattleOsaka
SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl
SEAKIX
Seattle/Tacoma Intl
Mon 10/26
11:25 am-6:20 am
1 stop26h 55m
Osaka Kansai Intl
Wed 11/11
6:05 pm-8:45 am
1 stop31h 40m
SeattleOsaka
SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl
SEAKIX
Seattle/Tacoma Intl
Mon 10/26
11:25 am-6:20 am
1 stop26h 55m
Osaka Kansai Intl
Wed 11/11
9:15 pm-8:45 am
1 stop28h 30m
SeattleOsaka
SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl
SEAKIX
Seattle/Tacoma Intl
Tue 12/1
7:00 am-4:45 pm
1 stop16h 45m
Osaka Kansai Intl
Tue 12/15
9:45 am-1:20 pm
1 stop20h 35m
SeattleOsaka
SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl
SEAKIX
Seattle/Tacoma Intl
Tue 12/1
7:00 am-10:20 pm
2 stops22h 20m
Osaka Kansai Intl
Tue 12/15
6:45 am-1:20 pm
1 stop23h 35m
SeattleOsaka
SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl
SEAKIX
Seattle/Tacoma Intl
Wed 2/3
8:40 am-5:40 pm
1 stop16h 00m
Osaka Kansai Intl
Wed 2/24
7:25 pm-9:57 pm
1 stop19h 32m
SeattleOsaka
SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl
SEAKIX
Seattle/Tacoma Intl
Tue 2/2
10:10 am-5:40 pm
1 stop14h 30m
Osaka Kansai Intl
Thu 2/25
7:25 pm-2:37 pm
1 stop12h 12m
SeattleOsaka
SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl
SEAKIX
Seattle/Tacoma Intl
Sun 11/29
12:10 am-5:50 pm
1 stop24h 40m
Osaka Kansai Intl
Sun 2/21
7:00 pm-6:10 pm
1 stop16h 10m
SeattleOsaka
SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl
SEAKIX
Seattle/Tacoma Intl
Mon 11/30
12:10 am-1:20 pm
1 stop20h 10m
Osaka Kansai Intl
Tue 12/15
2:30 pm-6:10 pm
1 stop20h 40m
SeattleOsaka
SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl
SEAKIX
Seattle/Tacoma Intl
Wed 2/3
10:10 am-5:40 pm
1 stop14h 30m
Osaka Kansai Intl
Wed 2/24
7:25 pm-6:22 pm
1 stop15h 57m
See travel insights to Osaka from
How to get the cheapest flight ticket from Seattle to Osaka Kansai Intl Airport
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 Seattle and Osaka Kansai Intl Airport?
Prices are currently low for flights on this route.
Typical prices usually range from $864 to $1,119.The lowest price recently found on this route was $832.
What is the cheapest month to fly to Osaka Kansai Intl Airport?
In general, February is the cheapest month to fly from Seattle to Osaka Kansai Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $671. If you aren’t able to travel during the month of February, then book flights to Osaka Kansai Intl Airport from Seattle during January instead. Flights to Osaka Kansai Intl Airport in January, while not as cheap as those in February, still average around $779.
How have Seattle to Osaka Kansai Intl Airport flight prices changed over time?
As of October 2026, prices for Seattle to Osaka Kansai Intl Airport flights are approximately 26% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Osaka Kansai Intl?
Cathay Pacific and Japan Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Osaka Kansai Intl
What airlines fly to Osaka Kansai Intl Airport?
ANA, Air Canada and Asiana Airlines are the top three most popular airlines that fly to Osaka Kansai Intl Airport from Seattle according to our data. ANA is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Osaka Kansai Intl Airport. Keep in mind that there are 4 different airlines that fly to Osaka Kansai Intl Airport on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Seattle and Osaka Kansai Intl Airport?
Incheon (ICN) was the most common stop: 30% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Seattle to Osaka Kansai Intl Airport?
Flights via San Francisco (SFO) offer the lowest average round-trip price of $763.
Which layover airport has the shortest travel time from Seattle to Osaka Kansai Intl Airport?
Flights connecting via Tokyo (HND) have the shortest average one-way travel time: 13h 50m.
Which layover airport has the shortest connection time from Seattle to Osaka Kansai Intl Airport?
Vancouver (YVR) has the shortest average layover time for this route: 2h 55m.
When to book flights from Seattle to Osaka Kansai Intl Airport
Cheap Seattle to Osaka Kansai Intl Airport (SEA to KIX) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Osaka Kansai Intl Airport
Frequently asked questions about flying from Seattle to Osaka Kansai Intl Airport
How far is Seattle/Tacoma Intl to Osaka Kansai Intl by plane?
The distance between Seattle/Tacoma Intl and Osaka Kansai Intl is about 5017.2 mi. By plane, this route typically takes 16h 45m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Osaka Kansai Intl Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Osaka Kansai Intl Airport were last updated today.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Osaka Kansai Intl Airport?
There are 4 operators available for flights from Seattle/Tacoma Intl Airport to Osaka Kansai Intl Airport as of October 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Osaka Kansai Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Osaka Kansai Intl Airport.
What documentation or ID do you need to fly to Osaka Kansai Intl Airport?
The travel and health documents you'll need for your trip to Osaka Kansai Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Osaka Kansai Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Seattle to Osaka Kansai Intl Airport?
Based on momondo bookings for flights between Seattle and Osaka Kansai Intl Airport, the leading airline is ANA, making up 68% of the total bookings. Other popular airlines include Air Canada with 12%, Asiana Airlines with 10%, and China Airlines with 9%.
Best airlines flying from Seattle to Osaka Kansai Intl Airport
Compare and see reviews for airlines that fly from Seattle to Osaka Kansai Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $565 | Free Cancellation | Rating 8.1 563 reviews | |||
| PriceFrom $649 | Free Cancellation | Rating 8.3 1,321 reviews | |||
| PriceFrom $862 | Free Cancellation | Rating 7.1 11,748 reviews | |||
| PriceFrom $915 | Free Cancellation | Rating 8.2 850 reviews |
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We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Osaka for you.
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Yes. momondo allows you to filter the results for Seattle to Osaka flights to just show those with flexible booking policies.
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