€431 Cheap Flights Osaka to Seattle (OSA-SEA)

View €431 flight on Wed, 24 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 to Seattle (OSA-SEA)

Prices were available within the past 7 days and start at €431 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

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

May is typically the cheapest month to fly

From €586 - €955 per traveller.

Graph displaying average flight prices per month

Osaka to Seattle route information
Origin airport
OSA-All Airports
Destination airport
Seattle - Tacoma Intl.
Distance
8024 km

Hyogo Prefecture to Seattle Flights

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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 . 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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