SEA - KIX

$314 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 4/20. 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Osaka.
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Everything you should know

Cheapest round-trip
$612
Overall average: $776
Philippine Airlines
Wed 9/2Wed 9/9
SEA - KIX • 1 stop
Cheapest one-way
$341
Typical prices: $355-$473
Cathay Pacific
Mon 4/20
SEA - KIX • 1 stop
Top airlines
Cheapest • from $612 (round-trip)
Best reviews • 8.9 score
Airline reviews
Airline reviews
+1
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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 $615 (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 35% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 13% 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

Wed, Sep 2 - Wed, Sep 9
Philippine Airlines Logo
11:10 pm - 7:35 pm
SEA
-
KIX
28h 25m
1 stop
Philippine Airlines Logo
3:15 pm - 8:05 pm
KIX
-
SEA
20h 50m
1 stop
$612Philippine Airlines
Wed, Aug 26 - Wed, Sep 2
Philippine Airlines Logo
11:10 pm - 2:10 pm
SEA
-
KIX
23h 00m
1 stop
Philippine Airlines Logo
3:15 pm - 8:05 pm
KIX
-
SEA
20h 50m
1 stop
$613Philippine Airlines
Wed, Aug 26 - Wed, Sep 2
Philippine Airlines Logo
11:10 pm - 2:10 pm
SEA
-
KIX
23h 00m
1 stop
Philippine Airlines Logo
3:15 pm - 8:05 pm
KIX
-
SEA
20h 50m
1 stop
$614Philippine Airlines
Thu, Aug 27 - Tue, Sep 8
Philippine Airlines Logo
11:10 pm - 2:10 pm
SEA
-
KIX
23h 00m
1 stop
Philippine Airlines Logo
3:15 pm - 8:05 pm
KIX
-
SEA
20h 50m
1 stop
$646Philippine Airlines
Tue, Aug 25 - Tue, Sep 1
Philippine Airlines Logo
11:10 pm - 7:35 pm
SEA
-
KIX
28h 25m
1 stop
Philippine Airlines Logo
10:25 am - 8:05 pm
KIX
-
SEA
25h 40m
1 stop
$671Philippine Airlines
Fri, Aug 28 - Wed, Sep 9
Philippine Airlines Logo
11:10 pm - 2:10 pm
SEA
-
KIX
23h 00m
1 stop
Philippine Airlines Logo
3:15 pm - 8:05 pm
KIX
-
SEA
20h 50m
1 stop
$688Philippine Airlines
Tue, Sep 8 - Mon, Sep 21
Asiana Airlines Logo
12:55 am - 6:30 pm
SEA
-
KIX
25h 35m
1 stop
Asiana Airlines Logo
7:45 pm - 2:55 pm
KIX
-
SEA
35h 10m
1 stop
$699Asiana Airlines
Tue, Apr 21 - Wed, May 13
Cathay Pacific Logo
11:45 am - 6:40 am
SEA
-
KIX
26h 55m
1 stop
Cathay Pacific Logo
9:05 am - 10:05 am
KIX
-
SEA
17h 00m
1 stop
$700Cathay Pacific
Thu, Aug 27 - Thu, Sep 10
Philippine Airlines Logo
11:10 pm - 2:10 pm
SEA
-
KIX
23h 00m
1 stop
Philippine Airlines Logo
3:15 pm - 8:05 pm
KIX
-
SEA
20h 50m
1 stop
$708Philippine Airlines
Sun, Aug 30 - Mon, Sep 14
Asiana Airlines Logo
12:55 am - 6:30 pm
SEA
-
KIX
25h 35m
1 stop
Asiana Airlines Logo
7:45 pm - 2:55 pm
KIX
-
SEA
35h 10m
1 stop
$711Asiana Airlines
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.

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 February, where tickets cost $733 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,177 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 35% 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$341
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 11% 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 $341 for a one-way ticket and $612 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?

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Osaka are STARLUX Airlines and ANA. With an average price for the route of $1,381 and an overall rating of 8.9, STARLUX Airlines is the most popular choice. ANA is also a great choice for the route, with an average price of $793 and an overall rating of 8.4.

  • 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 5 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.
8.9
STARLUX AirlinesOverall score based on 285 reviews
8.9Comfort
8.8Entertainment
9.0Boarding
9.2Crew
8.7Food
Airline reviews

Leg room was great. Friendly crew. Food is great. Crew always kept the toilet clean.

10.0 ExcellentChris, Mar 2026
CRK - TPE
Read more STARLUX Airlines reviews

Leg room was great. Friendly crew. Food is great. Crew always kept the toilet clean.

Excellent. Airline was very clean, staff was excellent, very professional. Economy seats were still large and comfortable. Meals were included and with good options. We were given a blanket and pillow as well as a comfort kit including an eye mask, ear plugs, and tooth brush. Would highly recommend.

Business Class is exceptional, from the lie flat seats to the wide range of food on board. Can’t wait for our next journey with Starlux!

Th tray was dirty when pulled it out. Still oily and food stains can clearly see last trip cleaner did not clean well. The toilet sink water did not drain quickly enough.

Majority of the movie entertainment loaded in the aircraft were quite old.

Crew is very attentive. Another new airbus 350-900 plane. Very modern.

Passengers were confused and freaking out coz the flight information wasn’t showing on the board that was running with all the departing flights. B9 gate was still showing Cathay Pacific bound for HK 15:50 was on until 22:07. STARLUX staff cameater but didn’t let the passengers go in to pre departure area until 22:45 for the 23:30 boarding time

The aircraft is fairly new. The screen is big and it's great to enjoy movies on a long haul flight. However, the food quality , and drink and snack selections, have room for improvement.

Preboarding food selection is an excellent idea. On the other end I did know the choice. People in my area know the choice. It ends with I got my meal till most of them are half way to finish their meal.

Overall it’s good . However the food quality can be improved .

Their was $200 charge for 2nd luggage, airplane very new and flight smooth. Flight time seem faster then Asian stoping Korea then china.

Delays, plane transfer due to malfunction, no entertainment, limited beverage service.

Seat was broken. Check in was not possible until we reached the gate, by then we were separated.

The food was not great; but I don’t expect much from airline food. However, the staff was incredible! I had gotten to the gate when I realized I had left my computer at the security checkpoint! I told a staff member and she said, “well, you will miss this flight if you go back to get it” It was a long way from the gate. I asked if I might get on the next flight. She sent for another staff member, and he took me to the gate desk. He found an open seat, and said,”okay, go run to get your computer, I will get you a new boarding pass.” I rran back, retrieved my computer, and returned to the gate. It was closed, but I found the gate nearby where the next ANA flight was leaving. Another staff member was ready for me, and printed me a new pass, and even made sure I still had an aisle seat that I requested! I got in line and continued my trip. These people are amazing, helpful, and friendly. My trip could have been ruined, or postponed at a great expense, but they saved the day! 5 stars!!!!

Best service! Food was Japanese fine dining and they even sang happy birthday to me since it was my birthday halfway through the flight. Bed was comfortable and cabin was quiet.

I originally thought I was booking with ANA airlines and didn't see "operated by United" until the day of. I even thought the United check-in update was a scam so ended up checking in 3 hours before the flight, causing separate seating and uncomfortable middle seats.

Very disappointing. Our flight was delayed for almost 6 hours with the lost time disrupting our travel plans. United should have known that any delay (approximately and hour) triggered a no-fly/work because according to the FAA they had to many flight hours. After the mechanical delay (approximately an hour) we had to wait for a fresh crew change. Seems to me that United could have anticipated this incident. Again, a very disappointing travel experience.

Excellent crew, food and comfort from LA to Narita. Flight from Narita to Manila was just okay, Food and comfort needs to improve. The business class was not comfortable.

Lots of leg room in premium. Departed exactly on time. Friendly crew.

My connecting flight from CTS to Narita was late and I missed my connection. A very nice agent met me when I deplaned and ensured that I caught the next flight back to SFO. Fantastic customer service :)

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.

2nd major delay due to maintenance issues. 1st delay missed my connecting flight.

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.

Very clean ,flight attendants very professional,nice , Boarding was very easy

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

My luggage didn’t arrive with my flight. Flight was delayed by nearly 2 hours while we sat on the plane and I almost missed my connecting flight and subsequently missed the last train from the airport so it took me another 2 hours to get to my destination after arriving, Crew skipped me several times when offering beverages, and I couldn’t get their attention at times because they wouldn’t even make eye contact with me. They didn’t give me a form for disembarking so I had to go to the back of the line after waiting an eternity for immigration. Paid for on flight wi- fi that didn’t work for most of the flight.

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

Never got on because the airline sent the WRONG plane to take us on our first leg of the trip so we missed ALL connecting flights. No help available from anyone at the airline…

The crew inside the airport for Alaska was rude, lazy and incompetent

The flight was extremely smooth, and so was the landing. Great piloting.

Plane was clean, staff was professional and flight was on time. No built in tv was still ok, as programs were offered that could synch to smart phones.

J was in the ER x 3...3 protruding discs...contacted Alaska many many days prior to cancel and request a refund or a credjt.. they only gave me 50 % credit....outrageous seeing how i have a doctors letter....just plain inhuman. AI sucks!

The flight was too short. No snacks or drinks offered.

The flight attendant was friendly and attentive. Although our interaction was brief—- it made a difference. The crew was upfront about turbulence. I like the Maui pretzels.

Everything was good. Please have a wheat free option for snacks in the future.

They are always so great! Friendly, on time if not early, organized boarding process. Great price too.

Crew very courteous. Boarding was great. Slow to get baggage at Denver.

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

Not to out myself as both a child at heart and kind of a terrible person, but the Pokémon safety video was the first time I watched an airplane safety video in like a decade. It was ADORABLE!! A great way to encourage attention from young and old alike.

Seamless! Long but the seat back entertainment kept us all busy the whole time! Meals were excellent! Crew fantastic! Very attentive!

The whole experience what excellent, from Anjou at the ticket counter to the attendants on the flight. Although it was an older plane, it was a very good flight. One of the best flights I have had on Air Canada!

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

Information on your arrival and departure airports