Cheap flights from Seattle to Osaka from $353
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 8/16. 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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Korean Air flights from Seattle to Osaka Kansai Intl Airport
Our best Korean Air deals on Seattle to Osaka Kansai Intl Airport flight tickets
Asiana Airlines flights from Seattle to Osaka Kansai Intl Airport
Our best Asiana Airlines deals on Seattle to Osaka Kansai Intl Airport flight tickets
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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 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 $799. If you aren’t able to travel during the month of February, then book flights to Osaka Kansai Intl Airport from Seattle during September instead. Flights to Osaka Kansai Intl Airport in September, while not as cheap as those in February, still average around $801.
What is the cheapest day to depart on your flight to Osaka Kansai Intl Airport?
The cheapest day to depart from Seattle to Osaka Kansai Intl Airport is on a Thursday. Travelers who choose to depart for Osaka Kansai Intl Airport on a Thursday will often find tickets for as low as $999. Flights from Seattle to Osaka Kansai Intl Airport on a Sunday will generally be more expensive and average around $1,405. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Osaka Kansai Intl Airport?
Our data shows that the cheapest Seattle to Osaka Kansai Intl Airport flights are usually those with departure times in the morning. Our users have found flights to Osaka Kansai Intl Airport in the morning for as low as $1,065. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,566 on average. Flights to Osaka Kansai Intl Airport from Seattle in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
How far in advance should I book a flight to Osaka Kansai Intl Airport?
You are more likely to see cheaper flights to Osaka Kansai Intl Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Osaka Kansai Intl Airport for around $1,040 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Osaka Kansai Intl Airport from Seattle for as low as $831 on momondo.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Osaka Kansai Intl?
Asiana Airlines, Korean Air, and ANA are the most popular carriers operating from Seattle/Tacoma Intl to Osaka Kansai Intl
What airlines fly to Osaka Kansai Intl Airport?
ANA, Asiana Airlines and Air Canada 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 52% of people opting to fly with this airline when traveling to Osaka Kansai Intl Airport. Keep in mind that there are 10 different airlines that fly to Osaka Kansai Intl Airport on a routine basis, so you have a few additional options to choose from.
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
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 13h 20m.
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 10 operators available for flights from Seattle/Tacoma Intl Airport to Osaka Kansai Intl Airport as of July 2025.
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 40% of the total bookings. Other popular airlines include Asiana Airlines with 16%, Air Canada with 15%, and STARLUX Airlines with 6%.
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 $648 | Free Cancellation | Rating 8.2 452 reviews | |||
| PriceFrom $669 | Free Cancellation | Rating 7.1 9,681 reviews | |||
| PriceFrom $716 | Free Cancellation | Rating 8.4 1,101 reviews | |||
| PriceFrom $719 | Free Cancellation | Rating 7.1 152 reviews | |||
| PriceFrom $746 | Free Cancellation | Rating 8.4 893 reviews | |||
| PriceFrom $797 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $856 | Free Cancellation | Rating 7.8 2,545 reviews | |||
| PriceFrom $918 | Free Cancellation | Rating 9.1 189 reviews | |||
| PriceFrom $963 | Free Cancellation | Rating 8.4 1,215 reviews | |||
| PriceFrom $999 | Free Cancellation | Rating 8.3 744 reviews |
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Why should I use momondo to find a flight deal from Seattle to Osaka?
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.
Can I find flights from Seattle to Osaka with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Seattle to Osaka flights to just show those with flexible booking policies.
How can momondo help me find flights from Seattle to Osaka?
momondo provides multiple filters to help you find the best flight to Osaka from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Seattle to Osaka right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Seattle to Osaka flights. All you need is a valid email address and we will do the rest; it is that quick and easy.