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Cheap flights from Seattle to Osaka Kansai Intl Airport from $421

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 Kansai Intl Airport departing on 7/13. 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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Find the cheapest flights from Seattle to Osaka

Cheap round-trip flights

These are some of the best round-trip flight deals from Seattle to Osaka that have been recently found on momondo from popular airlines, departing in the coming months.
7:15 am - 2:50 pmSEA-KIX
15h 35m1 stop
4:50 pm - 3:58 pmKIX-SEA
15h 08m1 stop
$736ANA
Find Deal
mar., abr. 22 - vie., may. 2
11:30 pm - 7:40 pmSEA-KIX
28h 10m1 stop
10:20 am - 7:20 pmKIX-SEA
25h 00m1 stop
$740Philippine Airlines
Find Deal
mié., abr. 23 - mié., may. 7
1:45 pm - 5:45 pmSEA-KIX
36h 00m1 stop
9:00 am - 11:55 amKIX-SEA
18h 55m1 stop
$743Asiana Airlines
Find Deal
dom., mar. 9 - mié., mar. 19
1:45 pm - 5:45 pmSEA-KIX
36h 00m1 stop
7:05 pm - 11:55 amKIX-SEA
32h 50m1 stop
$754Asiana Airlines
Find Deal
dom., mar. 9 - jue., mar. 20
7:10 am - 3:20 pmSEA-KIX
40h 10m2 stops
4:30 pm - 4:50 pmKIX-SEA
40h 20m2 stops
$767China Eastern
Find Deal
dom., jun. 1 - mié., jun. 11
7:10 am - 12:10 pmSEA-KIX
37h 00m2 stops
9:30 am - 5:00 pmKIX-SEA
23h 30m2 stops
$877China Eastern
Find Deal
dom., may. 18 - sáb., may. 24
12:10 am - 1:20 pmSEA-KIX
20h 10m1 stop
12:45 pm - 7:15 pmKIX-SEA
22h 30m1 stop
$915China Airlines
Find Deal
lun., mar. 3 - mar., mar. 18
1:10 am - 12:50 pmSEA-KIX
19h 40m1 stop
7:05 pm - 7:30 pmKIX-SEA
16h 25m1 stop
$920China Airlines
Find Deal
mar., may. 6 - mar., may. 13
1:30 am - 10:10 amSEA-KIX
16h 40m1 stop
6:30 pm - 7:30 pmKIX-SEA
17h 00m1 stop
$1,009EVA Air
Find Deal
mar., abr. 22 - mié., may. 7
1:30 am - 5:15 pmSEA-KIX
23h 45m1 stop
1:10 pm - 7:30 pmKIX-SEA
22h 20m1 stop
$1,027EVA Air
Find Deal
jue., abr. 3 - mar., abr. 8

Korean Air flights from Seattle to Osaka Kansai Intl Airport

Our best Korean Air deals on Seattle to Osaka Kansai Intl Airport flight tickets
Korean Air
Mar 11
SEA5:51 pmSeattle/Tacoma Intl
24h 44m
2 stops
KIX10:35 amOsaka Kansai Intl
Mar 17
KIX6:25 pmOsaka Kansai Intl
31h 35m
1 stop
SEA10:00 amSeattle/Tacoma Intl
Korean Air
Mar 16
SEA7:00 amSeattle/Tacoma Intl
35h 35m
2 stops
KIX10:35 amOsaka Kansai Intl
Mar 26
KIX11:55 amOsaka Kansai Intl
14h 05m
1 stop
SEA10:00 amSeattle/Tacoma Intl
Korean Air
Mar 9
SEA12:00 pmSeattle/Tacoma Intl
30h 35m
1 stop
KIX10:35 amOsaka Kansai Intl
Apr 2
KIX6:20 pmOsaka Kansai Intl
42h 15m
2 stops
SEA8:35 pmSeattle/Tacoma Intl

Philippine Airlines flights from Seattle to Osaka Kansai Intl Airport

Our best Philippine Airlines deals on Seattle to Osaka Kansai Intl Airport flight tickets
Philippine Airlines
Apr 23
SEA11:30 pmSeattle/Tacoma Intl
28h 10m
1 stop
KIX7:40 pmOsaka Kansai Intl
May 7
KIX10:20 amOsaka Kansai Intl
25h 00m
1 stop
SEA7:20 pmSeattle/Tacoma Intl
Philippine Airlines
Apr 6
SEA11:30 pmSeattle/Tacoma Intl
28h 10m
1 stop
KIX7:40 pmOsaka Kansai Intl
Apr 13
KIX10:20 amOsaka Kansai Intl
25h 00m
1 stop
SEA7:20 pmSeattle/Tacoma Intl
Philippine Airlines
Apr 6
SEA11:30 pmSeattle/Tacoma Intl
28h 10m
1 stop
KIX7:40 pmOsaka Kansai Intl
Apr 13
KIX10:20 amOsaka Kansai Intl
25h 00m
1 stop
SEA7:20 pmSeattle/Tacoma Intl

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 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 $803. 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 $905.

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 22 weeks ahead of your departure date. In general, you can expect to find flights to Osaka Kansai Intl Airport for around $1,115 when searching 22 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 $942 on momondo.

How have Seattle to Osaka Kansai Intl Airport flight prices changed over time?

As of February 2025, prices for Seattle to Osaka Kansai Intl Airport flights are approximately 62% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Osaka Kansai Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Osaka Kansai Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

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

Best Price Found

$421

Fastest flight time

13h 20m

Direct flights

None
The best one-way flight to Osaka Kansai Intl Airport from Seattle in the past 72 hours is $421. The best round-trip flight deal from Seattle to Osaka Kansai Intl Airport found on momondo in the last 72 hours is $736.
The fastest flight from Seattle to Osaka Kansai Intl Airport takes 13h 20m
There are no direct flights from Seattle to Osaka Kansai Intl Airport. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - 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?

  • 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?


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
Asiana AirlinesPriceFrom $648Free CancellationRating
8.2
446 reviews
Search Asiana Airlines flights
China EasternPriceFrom $719Free CancellationRating
7.0
126 reviews
Search China Eastern flights
ANAPriceFrom $780Free CancellationRating
8.4
842 reviews
Search ANA flights
United AirlinesPriceFrom $837Free CancellationRating
7.4
8,765 reviews
Search United Airlines flights
China AirlinesPriceFrom $864Free CancellationRating
8.2
727 reviews
Search China Airlines flights
STARLUX AirlinesPriceFrom $918Free CancellationRating
9.1
140 reviews
Search STARLUX Airlines flights
Air CanadaPriceFrom $930Free CancellationRating
7.0
8,748 reviews
Search Air Canada flights
Korean AirPriceFrom $975Free CancellationRating
8.4
1,037 reviews
Search Korean Air flights
Hawaiian AirlinesPriceFrom $997Free CancellationRating
7.9
2,317 reviews
Search Hawaiian Airlines flights
EVA AirPriceFrom $1,033Free CancellationRating
8.4
1,200 reviews
Search EVA Air flights

Traveling to a place near Osaka?

Book flights to Osaka if you plan to visit one of these locations
Nara
Izumisano
Himeji
Nishinomiya

Why use momondo?

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.


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