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$381+ Cheap flights from Osaka (OSA) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
OSA — SEA
kwi 22 — kwi 291
śr. 4/22
śr. 4/29
1 adult, Economy
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Cheap flight deals from Osaka to Seattle

Cheapest flights from Osaka to Seattle
Explore the most affordable flight options available from Osaka to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on Marzec 23, 2026.

This Flightnetwork deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
czw. 4/302:15 am
KIX
-
SEA
1 stop28h 40m
Multiple Airlines
pon. 5/1812:55 am
SEA
-
KIX
1 stop29h 45m
Multiple Airlines
Deal found 3/22$656
This Gotogate deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pt. 5/19:30 am
KIX
-
SEA
1 stop21h 25m
Asiana Airlines
czw. 5/712:55 am
SEA
-
KIX
1 stop29h 35m
Asiana Airlines
Deal found 3/18$692
This Air Canada deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wt. 5/56:00 pm
KIX
-
SEA
1 stop12h 20m
Air Canada
wt. 5/127:20 pm
SEA
-
KIX
1 stop29h 05m
Air Canada
Deal found 3/21$707
This Asiana Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pt. 5/19:30 am
KIX
-
SEA
1 stop21h 25m
Asiana Airlines
pon. 5/1812:55 am
SEA
-
KIX
1 stop16h 05m
Asiana Airlines
Deal found 3/19$718
This Gotogate deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
czw. 5/76:00 pm
KIX
-
SEA
1 stop32h 05m
Air Canada
czw. 5/142:55 pm
SEA
-
KIX
1 stop33h 30m
Air Canada
Deal found 3/23$737
This Air Canada deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wt. 6/236:00 pm
KIX
-
SEA
1 stop16h 32m
Air Canada
śr. 9/165:40 am
SEA
-
KIX
1 stop18h 45m
Air Canada
Deal found 3/19$752
This JTB deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JTB is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sob. 9/196:00 pm
KIX
-
SEA
1 stop16h 32m
Air Canada
wt. 9/227:20 pm
SEA
-
KIX
1 stop29h 05m
Air Canada
Deal found 3/23$776
This EVA Air deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
czw. 10/1511:10 am
KIX
-
SEA
1 stop23h 30m
EVA Air
ndz. 10/181:30 am
SEA
-
KIX
1 stop16h 40m
EVA Air
Deal found 3/22$807
This Alaska Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sob. 8/152:30 pm
ITM
-
SEA
1 stop12h 45m
Multiple Airlines
wt. 8/251:30 pm
SEA
-
ITM
1 stop14h 20m
Multiple Airlines
Deal found 3/20$1,044
This Alaska Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
śr. 8/122:30 pm
ITM
-
SEA
1 stop12h 45m
Multiple Airlines
wt. 8/251:30 pm
SEA
-
ITM
1 stop14h 20m
Multiple Airlines
Deal found 3/20$1,088
This Alaska Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
śr. 8/124:45 pm
ITM
-
SEA
2 stops20h 49m
Multiple Airlines
ndz. 8/231:30 pm
SEA
-
ITM
1 stop14h 20m
Multiple Airlines
Deal found 3/20$1,105
This Cheapflightsfares deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wt. 6/232:35 pm
ITM
-
SEA
1 stop12h 15m
Japan Airlines
śr. 9/168:10 am
SEA
-
ITM
2 stops19h 40m
Japan Airlines
Deal found 3/20$1,106

Find flight deals from Osaka to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Osaka (OSA) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated Marzec 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$656
(Flightnetwork)

One-way from

$381
(Kiwi.com)

Popular in

September

Cheapest in

May

Average price

$842
Provider with most accurate pricing for Osaka (OSA)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Osaka (OSA)-Seattle/Tacoma Intl flights.
Search Deals
From Osaka (OSA) to Seattle/Tacoma Intl
Search Deals
One-way flight from Osaka (OSA) to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($119 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Osaka to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated Marzec 23, 2026.
Use the filters below to find and compare flights from Osaka to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

ndz. 5/3

12:15 am-2:55 pm

1 stop30h 40m

Seattle/Tacoma Intl

ndz. 5/10

12:55 am-6:30 pm

1 stop25h 35m

$718

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

pt. 5/1

9:30 am-2:55 pm

1 stop21h 25m

Seattle/Tacoma Intl

pon. 5/18

12:55 am-9:00 am

1 stop16h 05m

$718

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

czw. 5/7

6:00 pm-10:05 am

1 stop32h 05m

Seattle/Tacoma Intl

czw. 5/14

2:55 pm-4:25 pm

1 stop33h 30m

$737

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

wt. 6/23

6:00 pm-6:32 pm

1 stop16h 32m

Seattle/Tacoma Intl

śr. 9/16

10:30 am-4:25 pm

1 stop13h 55m

$764

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

wt. 6/23

7:05 pm-8:13 am

2 stops29h 08m

Seattle/Tacoma Intl

wt. 9/15

1:15 am-12:00 pm

1 stop18h 45m

$888

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

ndz. 4/26

10:30 am-2:55 pm

1 stop20h 25m

Seattle/Tacoma Intl

ndz. 5/10

12:55 am-9:35 pm

1 stop28h 40m

$926

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

ndz. 5/3

9:00 pm-10:40 pm

2 stops41h 40m

Seattle/Tacoma Intl

ndz. 5/10

5:40 am-4:25 pm

1 stop18h 45m

$978

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

wt. 6/23

11:10 am-11:59 pm

2 stops28h 49m

Seattle/Tacoma Intl

śr. 9/16

5:59 pm-10:10 am

2 stops24h 11m

$981

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

pt. 7/24

11:10 am-7:50 pm

1 stop24h 40m

Seattle/Tacoma Intl

śr. 8/19

2:10 am-5:15 pm

1 stop23h 05m

$1,038

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

pt. 7/24

11:10 am-7:50 pm

1 stop24h 40m

Seattle/Tacoma Intl

czw. 8/6

1:10 am-5:15 pm

1 stop24h 05m

$1,038

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 41 resultsSorted by cheapest first
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Compare providers for flights from Osaka to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Osaka to Seattle in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Osaka-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Osaka-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Osaka-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Osaka-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Osaka-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Osaka to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Osaka with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Osaka to Seattle
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated Marzec 23, 2026.
See what other customers who have flown with STARLUX Airlines and ANA from Osaka to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.0
Wonderful
292 reviews

Comfort

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Food

8.7

Overall

9.0

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
STARLUX Airlines
9.0
Wonderful
292 reviews
STARLUX Airlines
9.0
Wonderful
292 reviews

Comfort

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Food

8.7

Overall

9.0

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
ANA
8.4
Very good
1,140 reviews
STARLUX Airlines
9.0
Wonderful
292 reviews

Comfort

8.9

Entertainment

8.8

Boarding

9.0

Crew

9.2

Food

8.7

Overall

9.0

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

Related info for your journey

Find useful and relevant information for your journey from Osaka to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Osaka?

    If you book a flight to Seattle from Osaka, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 0 flights from Osaka to Seattle/Tacoma Intl per day from 1 airline.

  • How long is the flight from Osaka to Seattle?

    For as low as $1,109, Asiana Airlines can have you in Seattle from Osaka in 12h 15m. Osaka and Seattle are separated by a distance of 4999 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Osaka to Seattle round-trip?

    Air Canada, at $794, was found to be the cheapest airline from Osaka to Seattle.. Users have found that Air Canada is 11% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Osaka to Seattle one-way?

    For one-way options, check prices for Korean Air. According to our data, you can fly for as low as $420. Users have also found prices from $424 and $482 on Air Canada and China Airlines, respectively.

  • Can I find deals for flights from Osaka to Seattle that include hotel bookings?

    Yes. In addition to deals on Osaka to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Osaka to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Osaka to Seattle.

  • Can I find deals for business class flights from Osaka to Seattle?

    Yes. Cheapflights offers flight deals from Osaka to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Ocean Shores
Olympia
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Ellensburg
Tukwila
Fife
Lakewood
Aberdeen
Shoreline
Marysville
Centralia
Federal Way

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Osaka to Seattle

Discover the top airline that operate flights from Osaka to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated Marzec 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$794Average$1,711FlexibilityNo cancel feeOn-time67%

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