OSA - SEA

$442 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 2/17. 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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Everything you should know

Cheapest round-trip
$651
Air Canada
Tue 6/23Wed 9/16
KIX - SEA • 1 stop
Cheapest one-way
$442
Typical prices: $531-$897
Multiple Airlines
Tue 2/17
KIX - SEA • 2 stops
Top airlines
Air Canada
Cheapest • from $651 (round-trip)
STARLUX Airlines
Best reviews • 8.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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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

Tue, Jun 23 - Wed, Sep 16
Air Canada Logo
6:00 pm - 6:32 pm
KIX
-
SEA
16h 32m
1 stop
Air Canada Logo
5:40 am - 4:25 pm
SEA
-
KIX
18h 45m
1 stop
$651Air Canada
Tue, Jun 23 - Wed, Sep 16
Air Canada Logo
6:00 pm - 6:32 pm
KIX
-
SEA
16h 32m
1 stop
Air Canada Logo
5:40 am - 4:25 pm
SEA
-
KIX
18h 45m
1 stop
$652Air Canada
Mon, Mar 2 - Sat, Mar 7
Air Canada Logo
7:25 pm - 3:01 pm
KIX
-
SEA
12h 36m
1 stop
Air Canada Logo
8:00 pm - 5:40 pm
SEA
-
KIX
28h 40m
1 stop
$680Air Canada
Sat, Mar 14 - Sat, Mar 21
Air Canada Logo
7:25 pm - 9:35 am
KIX
-
SEA
30h 10m
1 stop
Air Canada Logo
8:00 pm - 5:40 pm
SEA
-
KIX
29h 40m
1 stop
$714Air Canada
Sat, Mar 14 - Sat, Mar 21
Air Canada Logo
7:25 pm - 7:16 pm
KIX
-
SEA
15h 51m
1 stop
Air Canada Logo
3:40 pm - 5:40 pm
SEA
-
KIX
34h 00m
1 stop
$741Air Canada
Sat, Mar 14 - Sun, Mar 22
Air Canada Logo
7:25 pm - 10:56 pm
KIX
-
SEA
19h 31m
1 stop
Air Canada Logo
5:50 am - 5:40 pm
SEA
-
KIX
19h 50m
1 stop
$745Air Canada
Mon, Mar 2 - Sat, Mar 7
Multiple Airlines Logo
8:00 am - 10:57 pm
KIX
-
SEA
31h 57m
2 stops
Multiple Airlines Logo
3:40 pm - 5:40 pm
SEA
-
KIX
33h 00m
1 stop
$753Multiple Airlines
Fri, Mar 13 - Sun, Mar 22
Multiple Airlines Logo
2:35 pm - 9:00 am
KIX
-
SEA
34h 25m
1 stop
Multiple Airlines Logo
10:30 pm - 7:35 pm
SEA
-
KIX
29h 05m
1 stop
$765Multiple Airlines
Fri, Mar 6 - Mon, Mar 9
Asiana Airlines Logo
7:25 pm - 1:55 pm
KIX
-
SEA
35h 30m
1 stop
Asiana Airlines Logo
12:10 am - 8:50 am
SEA
-
KIX
16h 40m
1 stop
$791Asiana Airlines
Fri, Mar 6 - Mon, Mar 9
Asiana Airlines Logo
7:25 pm - 1:55 pm
KIX
-
SEA
35h 30m
1 stop
Asiana Airlines Logo
12:10 am - 6:05 pm
SEA
-
KIX
25h 55m
1 stop
$794Asiana 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.

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

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

Good to know

Low seasonMay
Cheapest flight$442
Best time to beat the crowds with an average 42% drop in price.
Most popular time to fly and prices are also 9% lower on average.
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 $442 for a one-way ticket and $651 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 is the best airline for flights from Osaka to Seattle, STARLUX Airlines or ANA?

    The two airlines most popular with KAYAK users for flights from Osaka to Seattle are STARLUX Airlines and ANA. With an average price for the route of $823 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 $1,078 and an overall rating of 8.4.

  • 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 airlines 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 268 reviews
8.9Boarding
8.8Entertainment
8.6Food
9.1Crew
8.8Comfort
Airline reviews

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

10.0 ExcellentAnonymous, Jan 2026
TPE - ONT
Read more STARLUX Airlines reviews

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 .

My luggage was forced open and broke the zipper. I received it in a huge STARLUX plastic bag. Unfortunately, I have a round trip ticket but might be my first and last with this airline

I went to the gate that showed on the flight board but they changed gates at the last minute and I missed my flight. I had to buy new ticket from EVA air to Manila and take 3 hour bus ride back to my home. Will never fly Starlux again!

Starlux was great service and awesome food and drinks👍🏼 will take starlux again for my next vacation👍🏼

Loved the boarding process. All airlines should board from the back to the front. Very efficient. Food was excellent, crew were great, seats were spacious and comfortable and the entertainment screen was the best I have seen.

The plane was very clean and the crew was very nice.

The lounge in Japan was busy and smaller. Have great choice of ramen.

Customer service was very good. Food was delicious. Wish the flight was longer.

I was good seat to keep stretch my legs . but couldn’t keep my bag in my hand . because they told me can’t keep my seat is no holder , because no seat fronts of us. wish I can put my leg on something higher. but instead of that everything goood.

Overall was a good experience. Crew members are nice and helpful.

Good airlines btu ORL airport messed up the return flight for me. Checking out a connecting flight pax is unacceptable.

The pilot was kept warning about the weather terrifying us. The flight attendants were not warm or pleasant.

I couldn’t sit with my daughter. we are separate and both seat was not window or halway side. in the middle. if we sit together will be share comfort seat and more easy travel. this is bad.

Although the flight was delayed because of the equipment came in late, I still give them excellent service ..good food selection and in flight entertainment were sufficient.. I will continue to fly with them

Staff was rude and loud. No respect for customers unlike the Starflyer Osaka to Haneda sector where service was outstanding. What a stark difference. Maybe United should learn from ANA how to do customer service.

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

Information on your arrival and departure airports