OSA - SEA

$403 Find Cheap Flights from Osaka 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 Osaka 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, 0 bags

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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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$671
Air Canada
man. 5/11man. 5/25
KIX - SEA • 1 stop
Cheapest one-way
$403
Overall average: $443
Multiple Airlines
tir. 9/8
KIX - SEA • 2 stops
Top airlines
Cheapest • from $671 (round-trip)
Best reviews • 8.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Osaka and Seattle. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $805 (round-trip)
Shortest trip • 11h 50m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Osaka to Seattle (OSA-SEA)

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

man., maj 11 - man., maj 25
Air Canada Logo
6:00 pm - 6:30 pm
KIX
-
SEA
16h 30m
1 stop
Air Canada Logo
5:50 am - 4:25 pm
SEA
-
KIX
18h 35m
1 stop
$671Air Canada
man., juni 15 - tir., juni 30
Air Canada Logo
6:00 pm - 10:40 pm
KIX
-
SEA
20h 40m
1 stop
Air Canada Logo
3:00 pm - 4:25 pm
SEA
-
KIX
33h 25m
1 stop
$704Air Canada
man., maj 11 - man., maj 25
Multiple Airlines Logo
7:35 am - 10:05 am
KIX
-
SEA
42h 30m
2 stops
Multiple Airlines Logo
5:50 am - 4:25 pm
SEA
-
KIX
18h 35m
1 stop
$733Multiple Airlines
man., juni 15 - lør., juni 27
Air Canada Logo
6:00 pm - 6:30 pm
KIX
-
SEA
16h 30m
1 stop
Air Canada Logo
3:00 pm - 4:25 pm
SEA
-
KIX
33h 25m
1 stop
$736Air Canada
tor., juni 4 - lør., juni 20
Air Canada Logo
6:00 pm - 6:30 pm
KIX
-
SEA
16h 30m
1 stop
Air Canada Logo
3:00 pm - 4:25 pm
SEA
-
KIX
33h 25m
1 stop
$767Air Canada
tir., juni 2 - tir., juni 9
Air Canada Logo
6:00 pm - 10:05 am
KIX
-
SEA
32h 05m
1 stop
Air Canada Logo
3:00 pm - 4:25 pm
SEA
-
KIX
33h 25m
1 stop
$778Air Canada
man., juni 15 - ons., juli 1
Air Canada Logo
6:00 pm - 10:05 am
KIX
-
SEA
32h 05m
1 stop
Air Canada Logo
5:45 am - 4:25 pm
SEA
-
KIX
18h 40m
1 stop
$783Air Canada
man., juni 22 - tir., sep. 15
Asiana Airlines Logo
12:15 am - 3:15 pm
KIX
-
SEA
31h 00m
1 stop
Asiana Airlines Logo
12:10 am - 6:30 pm
SEA
-
KIX
26h 20m
1 stop
$789Asiana Airlines
tir., juni 23 - tir., sep. 15
Asiana Airlines Logo
9:30 am - 3:15 pm
KIX
-
SEA
21h 45m
1 stop
Asiana Airlines Logo
12:10 am - 9:35 pm
SEA
-
KIX
29h 25m
1 stop
$790Asiana Airlines
tor., maj 21 - tor., juli 9
Multiple Airlines Logo
3:40 pm - 7:16 pm
ITM
-
SEA
19h 36m
2 stops
Multiple Airlines Logo
9:18 pm - 8:35 am
SEA
-
ITM
19h 17m
2 stops
$901Multiple Airlines
Booking Insights

KAYAK's insights & trends for Osaka to Seattle flights

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

Which airlines provide the cheapest flights from Osaka to Seattle?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Osaka to Seattle were found on Air Canada ($671) and Asiana Airlines ($789).

Good to know

Cheapest flight$403
Flight from Osaka Kansai Intl to Seattle

When to book flights from Osaka to Seattle

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

  • What is the cheapest flight from Osaka to Seattle?

    In the last 3 days, the lowest price for a flight from Osaka to Seattle was $403 for a one-way ticket and $671 for a round-trip.

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

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

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

    Osaka has 2 major airports: Osaka Itami and Osaka Kansai Intl. Seattle/Tacoma Intl is the only airport in Seattle. You’ll usually find the cheapest deals if you fly from Osaka Kansai Intl.

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

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

  • Which airline alliances offer flights from Osaka to Seattle?

    Star Alliance is the only airline alliance operating flights between Osaka and Seattle.

  • How does KAYAK find such low prices on flights from Osaka 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 to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Osaka 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 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Osaka 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 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 Osaka 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 Osaka 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.
8.9
STARLUX AirlinesOverall score based on 304 reviews
8.9Comfort
8.9Boarding
8.6Food
9.2Crew
8.8Entertainment
Airline reviews

We are scare because almost missing the fligh from Seattle to San Diego ! Starlux not have enough members for servicing with wheel chairs? We almost left behind , so we must walking !?

6.0 GoodAnonymous, Apr 2026
TPE - SEA
Read more STARLUX Airlines reviews

We are scare because almost missing the fligh from Seattle to San Diego ! Starlux not have enough members for servicing with wheel chairs? We almost left behind , so we must walking !?

We are on economy premium but they put us in economy seating? Asking why the fligh supports said : If you not happy you can claim for refund?

I liked everything but I flew business class and StarLux booked another passenger and a one year old , in business class The child cried 80 percent of the flight, the flight was a long 13 hour flight. I’m 75 and I have 10 grand children, I love kids But with that said it still made it not and enjoyable flight. Ask your great flight attendance what they think of the situation, they had to deal with. Let me know what they said Respectfully, Al Eaddy

Everything is smooth. Very good. Except flight arrived SFO 30min late.

Great airline. Kind staff, before m, during, and after the flight. They Directed you the whole way. Even when I arrived at my transfer destination, flight attendants guided passengers on which direction to go. I would definitely fly STARLUX again.

Got dinner and breakfast! They had mahjong game in entertainment system. Current movies. Loved the slippers, sleeping mask packet. Great experience for a long flight

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.

Everything you need to know for your flight from Osaka to Seattle

Information on your arrival and departure airports