Cheap Flights from Osaka (OSA) to Seattle (SEA)

View AU$774 flight on Fri, 26 Sep. 2025Opens in a new window

Popular airlines from Osaka to Seattle, WA (SEA-Seattle - Tacoma Intl.)

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Cheap Flights from Osaka (OSA) to Seattle (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Sat, 16 Aug. - Wed, 20 Aug.
KIX
Osaka
SEA
Seattle
AU$1,365 Return, found 7 hours ago
AU$1,365
Return
found 7 hours ago
Select Asiana Airlines flight, departing Sat, 16 Aug. from Osaka to Seattle, returning Wed, 20 Aug., priced at AU$1,365 found 7 hours ago
Korean Air
Sat, 16 Aug. - Wed, 20 Aug.
KIX
Osaka
SEA
Seattle
AU$1,393 Return, found 7 hours ago
AU$1,393
Return
found 7 hours ago
Select Korean Air flight, departing Sat, 16 Aug. from Osaka to Seattle, returning Wed, 20 Aug., priced at AU$1,393 found 7 hours ago
Asiana Airlines
Sat, 16 Aug. - Wed, 20 Aug.
KIX
Osaka
SEA
Seattle
AU$1,464 Return, found 7 hours ago
AU$1,464
Return
found 7 hours ago
Select Asiana Airlines flight, departing Sat, 16 Aug. from Osaka to Seattle, returning Wed, 20 Aug., priced at AU$1,464 found 7 hours ago
Korean Air
Sat, 16 Aug. - Wed, 20 Aug.
KIX
Osaka
SEA
Seattle
AU$1,514 Return, found 7 hours ago
AU$1,514
Return
found 7 hours ago
Select Korean Air flight, departing Sat, 16 Aug. from Osaka to Seattle, returning Wed, 20 Aug., priced at AU$1,514 found 7 hours ago
Asiana Airlines
Sat, 16 Aug. - Wed, 20 Aug.
KIX
Osaka
SEA
Seattle
AU$1,517 Return, found 7 hours ago
AU$1,517
Return
found 7 hours ago
Select Asiana Airlines flight, departing Sat, 16 Aug. from Osaka to Seattle, returning Wed, 20 Aug., priced at AU$1,517 found 7 hours ago
Korean Air
Sat, 16 Aug. - Wed, 20 Aug.
KIX
Osaka
SEA
Seattle
AU$1,529 Return, found 7 hours ago
AU$1,529
Return
found 7 hours ago
Select Korean Air flight, departing Sat, 16 Aug. from Osaka to Seattle, returning Wed, 20 Aug., priced at AU$1,529 found 7 hours ago
Asiana Airlines
Sat, 16 Aug. - Wed, 20 Aug.
KIX
Osaka
SEA
Seattle
AU$1,538 Return, found 7 hours ago
AU$1,538
Return
found 7 hours ago
Select Asiana Airlines flight, departing Sat, 16 Aug. from Osaka to Seattle, returning Wed, 20 Aug., priced at AU$1,538 found 7 hours ago
Cathay Pacific
Sat, 16 Aug. - Wed, 20 Aug.
KIX
Osaka
SEA
Seattle
AU$1,975 Return, found 7 hours ago
AU$1,975
Return
found 7 hours ago
Select Cathay Pacific flight, departing Sat, 16 Aug. from Osaka to Seattle, returning Wed, 20 Aug., priced at AU$1,975 found 7 hours ago
EVA Airways
Sat, 16 Aug. - Wed, 20 Aug.
KIX
Osaka
SEA
Seattle
AU$2,416 Return, found 7 hours ago
AU$2,416
Return
found 7 hours ago
Select EVA Airways flight, departing Sat, 16 Aug. from Osaka to Seattle, returning Wed, 20 Aug., priced at AU$2,416 found 7 hours ago
Delta
Sat, 16 Aug. - Wed, 20 Aug.
KIX
Osaka
SEA
Seattle
AU$2,631 Return, found 7 hours ago
AU$2,631
Return
found 7 hours ago
Select Delta flight, departing Sat, 16 Aug. from Osaka to Seattle, returning Wed, 20 Aug., priced at AU$2,631 found 7 hours ago

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

May is typically the cheapest month to fly

From AU$1,040 - AU$1,694 per traveller.

Graph displaying average flight prices per month

Flight from Osaka to Seattle route information
Origin airport
Kansai Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
AU$1,364
Distance
8044 km

OSA to SEA Flights

Ready to get away? Use Expedia.com.au to book cheap flights from Hyogo Prefecture to Seattle AU$1,365, and have leftover money to spare on adventures and activities while you’re in town. We have the world’s largest selection of flights, not to mention lower airfares than you’ll find anywhere else on the Internet.

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Frequently asked questions

How much is a flight from Osaka (OSA-All Airports) to Sea-Tac Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip flight between Osaka (OSA-All Airports) and Seattle - Tacoma Intl. Airport (SEA) was AU$1,365. Great fares don't wait forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Osaka (OSA-All Airports) to SEA?
Each air carrier has its own terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Osaka (OSA-All Airports) to Seattle - Tacoma Intl. Airport (SEA) 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 Osaka (OSA-All Airports) to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Osaka (OSA-All Airports) to SEA?
The distance is around 8 100 kilometres. Eye mask? Check. Toothbrush? Check. You'd be wise to pack all the essentials for this long-haul Japan to SeaTac flight.
Which airlines fly direct from Osaka (OSA-All Airports) to SEA?
If you want to travel straight from Osaka (OSA-All Airports) to Seattle - Tacoma Intl. Airport (SEA), you'll have to book a flight with one or more stops. Unfortunately, there are no airlines that fly directly between these airports.
Are Osaka (OSA-All Airports) to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Osaka (OSA-All Airports) to Seattle - Tacoma Intl. Airport (SEA) last minute could save you some cash. However, it might cost you a whole lot more! If you'd prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to 12 months in advance. If your preferred carrier hasn't released tickets yet, check back regularly as deals are updated all the time on Expedia.

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