S$449 Cheap Flights from Seattle to Osaka

View S$449 flight on Tue, 9 Dec, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Kansai Intl. Airport (KIX)

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Cheap Flights from Seattle to Osaka (SEA-KIX)

Prices were available within the past 7 days and start at S$449 for one-way flights and S$878 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 1 Dec - Wed, 17 Dec
SEA
Seattle
KIX
Osaka
S$878 Return, found 13 hours ago
S$878
Return
found 13 hours ago
Select Delta flight, departing Mon, 1 Dec from Seattle to Osaka, returning Wed, 17 Dec, priced at S$878 found 13 hours ago
Korean Air
Mon, 1 Dec - Wed, 17 Dec
SEA
Seattle
KIX
Osaka
S$883 Return, found 13 hours ago
S$883
Return
found 13 hours ago
Select Korean Air flight, departing Mon, 1 Dec from Seattle to Osaka, returning Wed, 17 Dec, priced at S$883 found 13 hours ago
Korean Air
Sun, 16 Nov - Tue, 25 Nov
SEA
Seattle
KIX
Osaka
S$884 Return, found 1 day ago
S$884
Return
found 1 day ago
Select Korean Air flight, departing Sun, 16 Nov from Seattle to Osaka, returning Tue, 25 Nov, priced at S$884 found 1 day ago
All Nippon Airways
Mon, 1 Dec - Wed, 17 Dec
SEA
Seattle
KIX
Osaka
S$892 Return, found 13 hours ago
S$892
Return
found 13 hours ago
Select All Nippon Airways flight, departing Mon, 1 Dec from Seattle to Osaka, returning Wed, 17 Dec, priced at S$892 found 13 hours ago
All Nippon Airways
Mon, 1 Dec - Wed, 17 Dec
SEA
Seattle
KIX
Osaka
S$896 Return, found 13 hours ago
S$896
Return
found 13 hours ago
Select All Nippon Airways flight, departing Mon, 1 Dec from Seattle to Osaka, returning Wed, 17 Dec, priced at S$896 found 13 hours ago
Asiana Airlines
Mon, 1 Dec - Wed, 17 Dec
SEA
Seattle
KIX
Osaka
S$917 Return, found 13 hours ago
S$917
Return
found 13 hours ago
Select Asiana Airlines flight, departing Mon, 1 Dec from Seattle to Osaka, returning Wed, 17 Dec, priced at S$917 found 13 hours ago
United
Mon, 17 Nov - Mon, 24 Nov
SEA
Seattle
KIX
Osaka
S$919 Return, found 1 day ago
S$919
Return
found 1 day ago
Select United flight, departing Mon, 17 Nov from Seattle to Osaka, returning Mon, 24 Nov, priced at S$919 found 1 day ago
Asiana Airlines
Wed, 19 Nov - Thu, 20 Nov
SEA
Seattle
KIX
Osaka
S$921 Return, found 1 day ago
S$921
Return
found 1 day ago
Select Asiana Airlines flight, departing Wed, 19 Nov from Seattle to Osaka, returning Thu, 20 Nov, priced at S$921 found 1 day ago
Hawaiian Airlines
Mon, 1 Dec - Wed, 17 Dec
SEA
Seattle
KIX
Osaka
S$980 Return, found 13 hours ago
S$980
Return
found 13 hours ago
Select Hawaiian Airlines flight, departing Mon, 1 Dec from Seattle to Osaka, returning Wed, 17 Dec, priced at S$980 found 13 hours ago
Hainan Airlines
Thu, 20 Nov - Wed, 26 Nov
SEA
Seattle
KIX
Osaka
S$993 Return, found 1 day ago
S$993
Return
found 1 day ago
Select Hainan Airlines flight, departing Thu, 20 Nov from Seattle to Osaka, returning Wed, 26 Nov, priced at S$993 found 1 day ago

Find the cheapest month to fly from Seattle (SEA) to Osaka (KIX)

February is typically the cheapest month to fly

From S$748 - S$1,407 per traveller.

Frequently asked questions

How much is a flight from Sea-Tac Airport to Kansai Intl. Airport (KIX)?
Start packing your bags, because round-trip flights between Seattle - Tacoma Intl. Airport (SEA) and Kansai Intl. Airport (KIX) start from S$878. That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book now to secure the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to Kansai Intl. Airport?
The majority of flights can be cancelled online, but each air carrier has its own set of terms and conditions. If you do decide to cancel your flight, check out our Customer Service Portal and follow the instructions.
How do I find cheap flights from Sea-Tac Airport to Kansai Intl. Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Sea-Tac Airport to Kansai Intl. Airport (KIX) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Seattle - Tacoma Intl. Airport (SEA) to Kansai Intl. Airport (KIX)?
With a flight distance of 8,100 kilometres between SeaTac and Tajiri, this is a long-haul trip. Be sure to drink plenty of water and move your legs from time to time.
Which airlines fly direct from Sea-Tac Airport to Kansai Intl. Airport?
Flying nonstop between Seattle - Tacoma Intl. Airport (SEA) and Kansai Intl. Airport isn't possible at the moment. However, you'll still be able to book a flight to Tajiri with at least one stop.
Are Sea-Tac Airport to Kansai Intl. Airport (KIX) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from SEA to KIX last minute could be your ticket to a cheap deal. However, it could end up costing a great deal more! If you'd prefer not to take the risk, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back regularly as deals are updated on Expedia all the time.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Kansai Intl.
Airlines serving
Air Canada, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, EVA Airways, Hainan Airlines, Hawaiian Airlines, Japan Airlines, Korean Air, Philippine Airlines, Turkish Airlines, United
Return price
S$877
Distance
8044 km

Book with confidence

Flights from Seattle to Osaka

There are several airlines that operate frequent flights from Seattle (SEA) to Osaka (KIX) including

The earliest flight leaves Seattle Tacoma Intl. Airport at 05:25 and arrives at Kansai Intl. Airport at 14:55. The last flight of the day departs Seattle at 14:40 and arrives at Osaka at 21:30.

The flight distance from Seattle to Osaka is about 9400 km, the shortest flight is 13 hours 10 minutes with United Airlines.

Expedia lets you search across the largest number of airlines and Osaka flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Seattle Osaka flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Seattle to Osaka trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Osaka flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Seattle to Osaka with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Flights from Seattle to Osaka

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