KIX - SEA

$429 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 9/11. 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
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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

Sun, Aug 24 - Sun, Aug 31
Philippine Airlines Logo
3:20 pm - 7:15 pmKIX-SEA
19h 55m1 stop
Philippine Airlines Logo
11:35 pm - 7:40 pmSEA-KIX
28h 05m1 stop
$832Philippine Airlines
Find Deal
Mon, Sep 8 - Thu, Sep 25
China Airlines Logo
7:05 pm - 7:45 pmKIX-SEA
16h 40m1 stop
China Airlines Logo
1:10 am - 6:05 pmSEA-KIX
24h 55m1 stop
$833China Airlines
Find Deal
Fri, Aug 22 - Fri, Aug 29
Philippine Airlines Logo
3:20 pm - 7:15 pmKIX-SEA
19h 55m1 stop
Philippine Airlines Logo
11:35 pm - 2:20 pmSEA-KIX
22h 45m1 stop
$839Philippine Airlines
Find Deal
Mon, Sep 8 - Fri, Sep 26
 Logo
7:35 am - 4:42 pmKIX-SEA
25h 07m2 stops
 Logo
2:15 pm - 9:05 pmSEA-KIX
14h 50m1 stop
Sun, Aug 24 - Sun, Aug 31
 Logo
7:40 am - 10:17 amKIX-SEA
42h 37m2 stops
 Logo
8:15 am - 6:45 pmSEA-KIX
18h 30m1 stop
Thu, Nov 6 - Mon, Nov 10
STARLUX Airlines Logo
2:00 pm - 3:05 pmKIX-SEA
18h 05m1 stop
STARLUX Airlines Logo
11:45 pm - 12:50 pmSEA-KIX
20h 05m1 stop
$895STARLUX Airlines
Find Deal
Thu, Nov 6 - Mon, Nov 10
STARLUX Airlines Logo
12:20 pm - 3:05 pmKIX-SEA
19h 45m1 stop
STARLUX Airlines Logo
11:45 pm - 11:10 amSEA-KIX
18h 25m1 stop
$896STARLUX Airlines
Find Deal
Mon, Aug 25 - Fri, Aug 29
EVA Air Logo
6:30 pm - 7:10 pmKIX-SEA
16h 40m1 stop
EVA Air Logo
2:10 am - 10:10 amSEA-KIX
16h 00m1 stop
$955EVA Air
Find Deal
Mon, Aug 18 - Mon, Sep 8
Asiana Airlines Logo
7:10 pm - 12:45 pmKIX-SEA
33h 35m1 stop
Asiana Airlines Logo
2:15 pm - 9:40 amSEA-KIX
27h 25m1 stop
$968Asiana Airlines
Find Deal
Sat, Aug 23 - Fri, Aug 29
EVA Air Logo
6:30 pm - 7:50 pmKIX-SEA
17h 20m1 stop
EVA Air Logo
2:10 am - 12:10 pmSEA-KIX
18h 00m1 stop
$977EVA Air
Find Deal
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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.

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
High seasonDecember
Cheapest flight$429
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly with an average 6% 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 $429 for a one-way ticket and $832 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, Star Alliance, and oneworld are the airline alliances operating flights between Osaka Kansai Intl and Seattle, with Star Alliance 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 454 reviews
8.0Food
8.4Boarding
8.1Comfort
7.8Entertainment
8.5Crew
Airline reviews

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

10.0 ExcellentJames, Jul 2025LAX - ICN
Read more Asiana Airlines reviews

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

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Two meals were served on this flight; one was a repeat of the meal I had had on the flight immediately preceding this one, which was bad enough I didn't even try it. Drinks were very limited. All I wanted was water, and on a 10.5 hour flight, I was given 3 cups of about 3 ounces each.

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

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