$356 Cheap Korean Air flights from Seattle to Osaka (SEA to KIX)

Find The Best Day To Fly from Seattle to Osaka

Amazing Korean Air SEA to KIX Flight Deals

The cheapest flights to Kansai Intl. found within the past 7 days were $670 round trip and $356 one way. Prices and availability subject to change. Additional terms may apply.

Mon, Mar 2 - Mon, Mar 9
SEA
Seattle
KIX
Osaka
$670 Roundtrip, found 2 days ago
$670
Roundtrip
found 2 days ago
Select Korean Air flight, departing Mon, Mar 2 from Seattle to Osaka, returning Mon, Mar 9, priced at $670 found 2 days ago
Mon, Mar 2 - Thu, Mar 12
SEA
Seattle
KIX
Osaka
$681 Roundtrip, found 2 days ago
$681
Roundtrip
found 2 days ago
Select Korean Air flight, departing Mon, Mar 2 from Seattle to Osaka, returning Thu, Mar 12, priced at $681 found 2 days ago
Sun, Apr 19 - Wed, May 13
SEA
Seattle
KIX
Osaka
$716 Roundtrip, just found
$716
Roundtrip
just found
Select Korean Air flight, departing Sun, Apr 19 from Seattle to Osaka, returning Wed, May 13, priced at $716 just found

KIX From SEA Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
Oyado Nishishichijo

Oyado Nishishichijo

4 out of 5
Save 100% on your flight
Price was $2,068, price is now $1,208 per person
$1,208
per person
Apr 26 - May 1
found 1 day ago
Roundtrip non-stop flight included
Seattle (SEA) to Osaka (KIX)
Hotel Monterey Grasmere Osaka

Hotel Monterey Grasmere Osaka

4 out of 5
Save 100% on your flight
Price was $2,898, price is now $1,663 per person
$1,663
per person
Apr 11 - Apr 17
found 1 day ago
Roundtrip non-stop flight included
Seattle (SEA) to Osaka (KIX)
Kiraku Kyoto Honmachi

Kiraku Kyoto Honmachi

3.5 out of 5
Save 100% on your flight
Price was $3,632, price is now $2,089 per person
$2,089
per person
Apr 26 - May 1
found 1 day ago
Roundtrip non-stop flight included
Seattle (SEA) to Osaka (KIX)
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Frequently asked questions

Can I catch a flight from SEA to KIX right now?
It's always wise to find out about any quarantine requirements and travel advice reports in place in your destination. Ensure you visit the Covid-19 Travel Advisor for up-to-date information on catching a flight to KIX from SEA.
What terminal is Korean Air at Sea-Tac Airport?
Once you've received your ticket for your flight from SEA to Kansai Intl. Airport (KIX), you should be able to see which terminals Korean Air flies in and out of. If not, contact your carrier or do some research online for that information.
Are there Korean Air non-stop flights from SEA to KIX?
As you can't go direct from Seattle - Tacoma Intl. Airport (SEA) to Kansai Intl. Airport (KIX) with Korean Air, make the most of your stopover. Grab one of your favorite drinks at a welcoming airport bar, or wander about the terminal and enjoy a little retail therapy.
How long is a Korean Air flight from SEA to KIX?
You can wander wisely from the minute you take your seat on the plane. With a Korean Air flight from Seattle - Tacoma Intl. Airport (SEA) to Kansai Intl. Airport (KIX) lasting around 13 hours and 40 minutes, it's smart to have a few coping strategies to resort to. Some toiletries and spare clothes should be among the basics in your carry-on.
How many direct and indirect flights does Korean Air fly from SEA to KIX?
You shouldn't have any problems locking in your trip from Sea-Tac Airport to Kansai Intl. Airport (KIX). With at least 21 Korean Air flights operating on the route per month, there's bound to be one that's right for you.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Kansai Intl. Airport (KIX), please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best Korean Air flight from Seattle SEA to Osaka KIX 

To find the best deals on flights to Seattle from Osaka with Korean Air, just enter your travel dates, filter by Korean Air, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Seattle SEA to Osaka KIX with Korean Air 

If you’re planning a round trip, booking return flights with Korean Air is usually the most cost-effective option. With airfares ranging from $670 to $716, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way Korean Air flights from Seattle SEA to Osaka KIX 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way Korean Air flight from Seattle to Osaka costs from $356. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Osaka KIX from  Seattle SEA with Korean Air 

To find a cheap Korean Air flight from Seattle SEA to Osaka KIX, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on Korean Air flights from Seattle SEA to Osaka KIX 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as March, or if you book a flight with a stopover. 

 

Find nonstop flights from Seattle SEA to Osaka KIX with Korean Air 

If you’re keen to be on Osaka soil fast, don’t waste time with a stopover—filter your search results to show direct Korean Air flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for Korean Air flights from Seattle SEA to Osaka KIX 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Osaka KIX from  Seattle SEA with Korean Air on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

Korean Air Airports
Hop on a(n) Korean Air flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ATLUSAHartsfield-Jackson Atlanta Intl.54
DTWUSADetroit Metropolitan Wayne County37
ICNKORIncheon Intl.34
GMPKORGimpo Intl.31
CJUKORJeju Intl.28
SEAUSASeattle - Tacoma Intl.25
LAXUSALos Angeles Intl.24
PUSKORGimhae14
JFKUSAJohn F. Kennedy Intl.9
ORDUSAO'Hare Intl.7

Travelers ❤️ these 🏨 after their flight to Osaka

Hotel Nikko Kansai Airport

Hotel Nikko Kansai Airport

4 out of 5
1, Senshu-kuko Kita Tajiri Osaka-fu
This hotel doesn't skimp on freebies - guests receive free WiFi and free self parking. Traveling on business? Take advantage of the business center and free ...
9.4/10 Exceptional! (2,990 reviews)
Wonderful experience pleasant and very accommodating staff easy access to the airport. Will definitely book again when back in Osaka.

Reviewed on Feb 3, 2026

Hotel Nikko Kansai Airport
First Cabin Kansai Airport

First Cabin Kansai Airport

2.5 out of 5
Senshu Airport 1 Northern Izumisano Osaka
This capsule hotel features free WiFi in public areas, luggage storage, and laundry facilities. Staff at the 24-hour front desk can provide around-the-clock ...
8.4/10 Very Good! (270 reviews)
Lovely area to rest meanwhile being at airport, If you arrive earlier than the check in time, the hotel allows you to keep your baggage there until your check in time

Reviewed on Dec 21, 2025

First Cabin Kansai Airport
Kansai Airport Washington Hotel

Kansai Airport Washington Hotel

4 out of 5
1-7 Rinku Orai-Kita Izumisano Osaka-fu
This hotel doesn't skimp on freebies - guests receive free WiFi and free self parking. Traveling on business? Take advantage of the laundry service and free ...
8.8/10 Excellent! (2,245 reviews)
Clean room, convenient location.

Reviewed on Feb 2, 2026

Kansai Airport Washington Hotel
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

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*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.