KIX - SEA

$434 Find Cheap Flights from Osaka Kansai Intl to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Kansai Intl to Seattle departing on 9/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Osaka to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Osaka to Seattle, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Booking Insights
Flights Deals

Cheap Flights from Kansai Intl to Seattle (KIX-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Kansai Intl to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Kansai Intl to Seattle

Tue, Sep 23 - Mon, Sep 29
 Logo
12:35 pm - 12:30 pmKIX-SEA
15h 55m1 stop
 Logo
2:15 pm - 5:50 pmSEA-KIX
35h 35m1 stop
Sat, Aug 30 - Sat, Sep 13
 Logo
12:35 pm - 12:45 pmKIX-SEA
16h 10m1 stop
 Logo
2:15 pm - 9:40 amSEA-KIX
27h 25m1 stop
Sun, Sep 14 - Sun, Sep 21
Asiana Airlines Logo
9:10 am - 12:30 pmKIX-SEA
19h 20m1 stop
Asiana Airlines Logo
2:15 pm - 3:50 pmSEA-KIX
33h 35m1 stop
$717Asiana Airlines
Find Deal
Thu, Sep 25 - Sat, Sep 27
Asiana Airlines Logo
10:50 am - 12:30 pmKIX-SEA
17h 40m1 stop
Asiana Airlines Logo
2:15 pm - 9:40 amSEA-KIX
27h 25m1 stop
$720Asiana Airlines
Find Deal
Tue, Sep 23 - Sun, Sep 28
China Airlines Logo
2:00 pm - 7:20 pmKIX-SEA
21h 20m1 stop
China Airlines Logo
1:10 am - 12:00 pmSEA-KIX
18h 50m1 stop
$814China Airlines
Find Deal
Sun, Sep 14 - Sat, Sep 20
China Airlines Logo
2:00 pm - 7:45 pmKIX-SEA
21h 45m1 stop
China Airlines Logo
1:10 am - 12:00 pmSEA-KIX
18h 50m1 stop
$815China Airlines
Find Deal
Sun, Sep 14 - Sat, Sep 20
STARLUX Airlines Logo
1:25 pm - 4:10 pmKIX-SEA
18h 45m1 stop
STARLUX Airlines Logo
1:15 am - 12:15 pmSEA-KIX
19h 00m1 stop
$828STARLUX Airlines
Find Deal
Fri, Sep 26 - Fri, Sep 26
STARLUX Airlines Logo
3:10 pm - 4:10 pmKIX-SEA
17h 00m1 stop
STARLUX Airlines Logo
1:15 am - 12:15 pmSEA-KIX
19h 00m1 stop
$865STARLUX Airlines
Find Deal
Wed, Aug 20 - Wed, Sep 3
Philippine Airlines Logo
10:20 am - 7:15 pmKIX-SEA
24h 55m1 stop
Philippine Airlines Logo
11:35 pm - 7:40 pmSEA-KIX
28h 05m1 stop
$887Philippine Airlines
Find Deal
Sun, Sep 14 - Sun, Sep 21
Philippine Airlines Logo
3:20 pm - 7:15 pmKIX-SEA
19h 55m1 stop
Philippine Airlines Logo
11:35 pm - 5:00 pmSEA-KIX
49h 25m2 stops
$893Philippine Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Kansai Intl to Seattle flights

Get data-powered insights and trends into flights from Kansai Intl to Seattle to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Osaka Kansai Intl Airport to Seattle?

What’s the cheapest day of the week to fly from Osaka Kansai Intl to Seattle?

The average price of all round-trip flights from Osaka Kansai Intl Airport to Seattle clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Seattle on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Osaka Kansai Intl to Seattle. For your return ticket, we recommend flying on a Thursday and avoiding Sundays for the best deals.

Good to know

Low seasonFebruary
Cheapest flight$434
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from Osaka Kansai Intl to Seattle

When to book flights from Kansai Intl to Seattle

Are your dates flexible? Find out the best times to travel from Kansai Intl to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Osaka Kansai Intl to Seattle flights

  • What is the cheapest flight from Osaka Kansai Intl Airport to Seattle?

    In the last 3 days, the lowest price for a flight from Osaka Kansai Intl Airport to Seattle was $434 for a one-way ticket and $687 for a round-trip.

  • Do I need a passport to fly between Osaka Kansai Intl and Seattle?

    Yes, you’ll need a passport to travel to Seattle from Osaka Kansai Intl.

  • Which aircraft models fly most regularly from Osaka Kansai Intl to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Osaka Kansai Intl to Seattle?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Osaka Kansai Intl and Seattle, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Osaka Kansai Intl to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Osaka Kansai Intl to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Osaka Kansai Intl to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Osaka Kansai Intl is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Osaka Kansai Intl to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Osaka Kansai Intl with another airline. Booking your flights between Osaka Kansai Intl and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Osaka Kansai Intl to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Osaka Kansai Intl up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Kansai Intl to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Osaka to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Kansai Intl to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.2
Asiana AirlinesOverall score based on 468 reviews
8.1Comfort
8.4Boarding
8.5Crew
7.7Entertainment
8.0Food
Airline reviews

The aircraft was massive (A-380) and became crowded with 400+ passengers on board.

6.0 GoodAnonymous, Jul 2025ICN - JFK
Read more Asiana Airlines reviews

The aircraft was massive (A-380) and became crowded with 400+ passengers on board.

Love flying Asiana. Been using it for over a decade now.

Coming back to America was a peaceful flight everyone and everything was perfect

I had a bad experience coming from America to Thailand. On my connecting flight my check in suitcase was not put on the departing aircraft, I received my suitcase 24 hours after arriving in Bangkok and when I open my luggage my hand swelled up. The next morning when I put on an outfit from my suitcase my face swelled up and became numb. My entire vacation was ruined it seems that some kind of chemical was sprayed into suitcase and ruined my clothes and got me sick. The staff at my hotel called the airline and spoke to someone and they told me to file a complaint and gave my a website to do so. I did not file a complaint I felt like it would have fell on death ears. I had to throw away my brand new vacation clothes and suitcase and I had the worst vacation ever due to this happening to me.

The staff was courteous and the flight was very smooth. It was so nice to see the captain greeting the passengers at the end of the flights.

The beefsteak on the lunch menu was excellent! I usually do not eat airplane food. I loved it.

Flight was too cold. I wore a regular cotton tee and it wasn’t enough. It was a night time flight so I would have thought a blanket would be provided to passengers. A 4 hour flight and no options for a meal? I flew Asiana the next day from Seoul to Manilla. Same duration, 4 hours. They give everyone a pillow and blanket and serve a meal. Why is United so cheap and holding back meals and amenities? Also, they promote too much gay stuff and DEI in their advertisements. Please be mindful of other beliefs and don’t shove your gay ideology down my throat.

Staff always with a smile and very helpful with my mom who has mobility issues.

It was amazing. I was not expecting the phenomenal customer service Asiana provides.

It was all perfect and very pleasant for such long flights

Everything you need to know for your flight from Kansai Intl to Seattle

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.