SEA - KIX

$397 Find Cheap Flights from Seattle to Osaka Kansai Intl

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Kansai Intl departing on 8/3. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Osaka Kansai Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Osaka, 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 Seattle to Osaka, as well as popular online travel agencies
Travelers love KAYAK
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Everything you should know

Cheapest round-trip
$830
Typical prices: $848-$690
ANA
Sun 10/25Fri 11/6
SEA - KIX • 2 stops
Cheapest one-way
$397
Typical prices: $404-$490
ANA
Mon 8/3
SEA - KIX • 1 stop
Top airlines
Cheapest • from $830 (round-trip)
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Kansai Intl. You'll need at least 1 connection.
Insights
Insights
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Insights
Top layover airports
Cheapest • Avg $565 (round-trip)
Shortest trip • 14h 00m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 15% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 15% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Kansai Intl!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Kansai Intl 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 Seattle to Kansai Intl

Sun, Oct 25 - Fri, Nov 6
ANA Logo
7:32 pm - 8:35 am
SEA
-
KIX
21h 03m
2 stops
ANA Logo
7:05 am - 1:20 pm
KIX
-
SEA
23h 15m
1 stop
$830ANA
Mon, Aug 3 - Thu, Aug 27
ANA Logo
4:30 pm - 8:40 am
SEA
-
KIX
24h 10m
1 stop
ANA Logo
9:00 pm - 2:25 pm
KIX
-
SEA
33h 25m
1 stop
$834ANA
Tue, Aug 4 - Tue, Aug 25
ANA Logo
7:00 am - 2:50 pm
SEA
-
KIX
15h 50m
1 stop
ANA Logo
4:55 pm - 4:15 pm
KIX
-
SEA
15h 20m
1 stop
$836ANA
Tue, Aug 4 - Thu, Aug 20
ANA Logo
4:30 pm - 9:50 pm
SEA
-
KIX
13h 20m
1 stop
ANA Logo
4:55 pm - 11:24 pm
KIX
-
SEA
22h 29m
1 stop
$838ANA
Mon, Oct 12 - Tue, Nov 17
ANA Logo
4:30 pm - 9:50 pm
SEA
-
KIX
13h 20m
1 stop
ANA Logo
3:45 pm - 1:20 pm
KIX
-
SEA
14h 35m
1 stop
$839ANA
Wed, Sep 2 - Wed, Sep 9
ANA Logo
4:30 pm - 9:50 pm
SEA
-
KIX
13h 20m
1 stop
ANA Logo
3:50 pm - 2:25 pm
KIX
-
SEA
14h 35m
1 stop
$840ANA
Mon, Oct 5 - Tue, Nov 17
ANA Logo
8:40 am - 7:50 pm
SEA
-
KIX
19h 10m
2 stops
ANA Logo
8:20 am - 1:20 pm
KIX
-
SEA
22h 00m
1 stop
$841ANA
Tue, Oct 20 - Thu, Oct 29
ANA Logo
4:30 pm - 10:20 pm
SEA
-
KIX
13h 50m
1 stop
ANA Logo
3:45 pm - 2:20 pm
KIX
-
SEA
14h 35m
1 stop
$842ANA
Mon, Aug 3 - Thu, Aug 27
United Airlines Logo
7:00 am - 2:50 pm
SEA
-
KIX
15h 50m
1 stop
United Airlines Logo
9:20 am - 4:15 pm
KIX
-
SEA
22h 55m
2 stops
$845United Airlines
Tue, Oct 20 - Tue, Oct 27
ANA Logo
4:30 pm - 10:20 pm
SEA
-
KIX
13h 50m
1 stop
ANA Logo
6:45 am - 2:18 pm
KIX
-
SEA
23h 33m
2 stops
$846ANA
Booking Insights

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

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

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Osaka Kansai Intl Airport departing in October.

What is the cheapest month to fly from Seattle to Osaka Kansai Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Osaka Kansai Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Osaka Kansai Intl Airport is April, where tickets cost $722 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,243 and $971 respectively.

How far in advance should I book a flight from Seattle to Osaka Kansai Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Osaka Kansai Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Osaka Kansai Intl Airport, you should book around 4 weeks before departure, which saves you about 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonMay
Cheapest flight$397
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Seattle to Osaka Kansai Intl

When to book flights from Seattle to Kansai Intl

Are your dates flexible? Find out the best times to travel from Seattle to Kansai Intl 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 Seattle to Osaka Kansai Intl flights

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

    In the last 3 days, the lowest price for a flight from Seattle to Osaka Kansai Intl Airport was $397 for a one-way ticket and $830 for a round-trip.

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

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

  • Which airports will I be using when flying from Seattle to Osaka Kansai Intl?

    When flying out of Seattle you will be using Seattle/Tacoma Intl. You will be landing at Osaka Kansai Intl, also known as Osaka Kansai Intl.

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

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

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

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

  • Which is the best airline for flights from Seattle to Osaka, ANA or Asiana Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Osaka are ANA and Asiana Airlines. With an average price for the route of $803 and an overall rating of 8.4, ANA is the most popular choice. Asiana Airlines is also a great choice for the route, with an average price of $734 and an overall rating of 8.1.

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

    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 Seattle to Osaka Kansai Intl.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Osaka Kansai Intl from Seattle 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 Seattle to Osaka Kansai Intl?

    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 Osaka Kansai Intl with an airline and back to Seattle with another airline. Booking your flights between Seattle and KIX 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 Seattle to Osaka Kansai Intl?

    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 Osaka Kansai Intl from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Seattle to Kansai Intl

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Osaka. 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 Seattle to Kansai Intl? 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.
8.4
ANAOverall score based on 1200 reviews
7.7Food
8.5Boarding
8.7Crew
8.2Comfort
8.0Entertainment
Airline reviews

The ladies are great seats should be a little bigger!

10.0 ExcellentJINJI JOO, Apr 2026
LAX - NRT
Read more ANA reviews

The ladies are great seats should be a little bigger!

Couple of hours delayed, we had to re-booked our Shinkansen reservation twice. United Aiines need to improve their time!

The check-in started 3 minutes early; there were people lining up a half hour before. I was third, and I got checked in and passes in hand for my connection as well; I walked away from the desk one minute before it was even supposed to be open. Amazing. That said, the food on the first leg of my trip was not good, and I didn’t finish it. Second leg, it was tasty. You get a cup of Häagen-Dazs after dinner. The staff were polite and helpful. Will use again.

Crew was fantastic. Seats were not completely lay flat but still comfortable to watch a show. International food was lobster which was very big but a little tough. The scallop appetizer was delicious. Loved the individual air conditioning vent at each seat. Flight overall was very smooth and very good.

Staff was friendly but couldn't find way to track them down during flight. Food tried to be gourmet but was just too unusual. Business class seats were hard. Even sitting on the pillow, was still painful. Have to give them credit for on-time flights and decent gate area.

Flight was excellent. Transfer from one airport to another airport for a connecting flight was difficult and stressful.

Overall good except the checkin process at Bangkok airport. Can ANA explain why the line for business class is longer than that for economy? I, BC passenger, had to move from BC line to economy line to get faster service.

Matsuyama to Tokyo is basically a puddle jumper flight, so it was as good as one should expect. No meal, no entertainment, and none expected.

The staff is amazing, I cannot stress that enough! The food is really good and snacks at stations to take for yourselves. Economy seating is fine, not the most comfortable, but our friends in Premium Economy said they were very comfortable! Decent entertainment options, but being built in, you have to use their cheap headsets unless you have your own plug in ones. I only have Bluetooth earbuds.

Seats were extremely cramped even for economy. Food was atrocious. Crew was fine but no follow up, additional drinks offered etc. For a 14 hour flight I expected more.

Smooth sailing trip, pilots are good. Less amount of food offered but the quality is okey.

Humm, I should have known that the seat I peaked on my flight from Inchon to Manila was designed for a toddler or very small person.

The staff hold my luggage to steel and exchange my stub, i was very disappointed.

Kayak along with airfare assay are attempting to steal my money. Charges are being pressed.

Customer service and attention to details. The food was good.

I’d have rated Asiana good except an unfortunate incident in which I felt one of your employee didn’t really help us. During the first leg of the trip, the flight from LAX to ICN, I left my backpack on the plane. When I realized, I reported to one of your employee who promised me that it’d be taken care of, that my backpack will be there at HCM city. When we arrived there, HCM people had no idea and my backpack was still at Incheon airport who denied any knowledge whatsoever. I was left in the cold and felt helpless. I was very disappointed. I’d like someone to look into this and let me know.

I am thankful that I was able to fly using Asiana

It was my first time flying Asiana but i was very pleased with how professional and understanding the flight crew is with little kids. One flight attendant held my 3 year old daughter’s hand guiding her to the exit after landing while i had my hands full with luggage and my infant. She was very helpful.

Better screens, it would have been nice to have more comfortable seats.

It was great, but my bag was not loaded onto the connecting flight. I'm currently getting it resolved. If this isn't a problem, everything else was excellent.

The crew was great and everything went smoothly coming and going.

My window seat did not have a window. I chose seat 11A thinking I would have a view. I had a wall instead.

See what I wrote in the previous section. This was a terrible experience. I would like refund.. I even paid an extra $70 for an aisle seat closer to the front to ensure that I got off early enough to catch the next flight. The fact that the plane did not wait, and even left eearlier, knowing that the first flight came in late, and was moved to a terminal three train stops away is appalling. My friend that flew JetBlue, their flight was delayed and came in later and the connecting flight WAITED for them. How is it that JetBlue could do that, and Alaska could not.

This was my second time flying Alaska Airline in the 1st Class cabin. Everything was fine with the exception of the food and entertainment. The food was just ok but not what I was expecting from 1st Class. A BBQ pork sandwich and baked potato. There wasnt any in-flight entertainment. I found that odd since it was a coast to coast flight Seattle to Dulles. My sister flew 1st Class on Delta on a shorter flight ( Seattle to Cincinnati) and had an awesome meal and in-flight entertainment. I typically fly Delta but there wasn’t a flight with times that fit my schedule. I am by no means a primary donna. But when my upgrade cost over $900…I didn’t use any reward miles…I was expecting more than what I got. I will never fly Alaska Airline 1st Class again. I will stick with Delta for all my travel needs whether it’s in 1st Class or coach.

Good staff. Comfortable seats. Had to check my bag because the flight was too full.

Loved this first class flight! Awesome food, snacks and drinks. Comfortable seat with foot rest. Good movie. Very friendly crew! Only thing I would suggest is having a screen on seat back in front of me so I didn’t have to watch the movie on my phone.

The crew was very attentive, boarding was orderly. I really liked the way Alaska Airlines gives boarding passes and dropping off my bags. Very smooth.

Once we were in the air, the flight was nice and smooth. The flight was about twenty minutes late to begin with, though, and then we needed to wait to land for another plane to land first.

Flight crew great! No WiFi not great. Someone took my bag not great!

Alaska Airlines staff go out of their way to accommodate my fragile musical instrument, every time. They are unlike any other airline. I've experienced this can-do attitude on several flights with different staff, so this must be the culture of their company. I appreciate Alaska!

All good……but luggage didn’t make it on the airplane. Had to wait 3 days. Was a bummer.

Small suitcase used for carryon the last time was refused by boarding crew this time. Appears to be at the discretion and mood of the person on the day. Flight was only half booked, there would have been no problem with space.

The plane was very cramped to point there was no way not to touch person beside you and a stewardess screamed at my son when I touched her arm to get her attention to let her know she forgot to give him his dinner when she passed him and gave a dinner to passenger behind him. Very inappropriate response and She never came back to apologize and other stewardess said she was sorry “if I felt” she was inappropriate. Horrible experience and she should be reprimanded for her behavior

Everything went smoothly — on-time departure and very organized boarding. We pre-ordered vegan meals, which were fine but not especially memorable. We may have had slightly higher expectations given it was a Japanese airline. It felt like a dinner meal than a breakfast. Overall, it was a good flight experience and we would recommend it.

This flight with a lot empty place , and I have more room, feeling comfortable.

Snacks were just placed and many people were hungry and unaware they were available. Ran out of water bottles. Attendants not available. Missed entire meal.

The cabin crew was professional and there were plenty of movie choices, but the food was a bit sub-standard.

The flight was delayed an hour, but not because of Air Canada. The crew was polite, professional, and competent. The food was above average for Air Canada, but just fine. The stand out for me in the 10 hour flight was the entertainment package. The best of any airline I’ve experienced so far. Looking forward to my return flight to finish some more of the shows I was watching.

Very good!👍!especially the typhoon coming, the speaking Chinese language service is excellent 👍!

They could care less about you. Just under a 4 hour delay in Seattle, leading into a missed connection in Vancouver, which led to 2 more delays that added up to 3 more hours leaving us to have to sleep on the floor of the Toronto airport cause they don't help you find accomodations and they just book you on the next flight out. Took an additional 14 hours to get home. Always given the brush off to get rid of us. Worst airline ever

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

Information on your arrival and departure airports