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$1,086+ Cheap flights from Santa Rosa (STS) to Osaka (OSA)

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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
STS — OSA
Mar 16 — Mar 231
Mon 3/16
Mon 3/23
1 adult, Economy
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Cheap flight deals from Santa Rosa to Osaka

Cheapest flights from Santa Rosa to Osaka
Explore the most affordable flight options available from Santa Rosa to Osaka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 14, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/12. 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.
Sat 2/2111:15 am
STS
-
KIX
2 stops42h 05m
Multiple Airlines
Fri 3/67:00 am
KIX
-
STS
2 stops33h 50m
Multiple Airlines
Deal found 2/12$1,343
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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.
Thu 2/197:57 pm
STS
-
KIX
2 stops33h 23m
Multiple Airlines
Mon 3/97:00 am
KIX
-
STS
2 stops32h 50m
Multiple Airlines
Deal found 2/12$1,354
This Alaska Airlines deal was found by Cheapflights users on 2/10. 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.
Sun 2/2211:15 am
STS
-
ITM
2 stops39h 40m
Multiple Airlines
Wed 2/252:40 pm
ITM
-
STS
2 stops24h 12m
Multiple Airlines
Deal found 2/10$1,402
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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.
Wed 2/257:57 pm
STS
-
KIX
2 stops49h 18m
Multiple Airlines
Sun 3/89:00 pm
KIX
-
STS
2 stops42h 50m
Multiple Airlines
Deal found 2/12$1,444
This American Airlines deal was found by Cheapflights users on 2/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:23 pm
STS
-
KIX
2 stops33h 27m
American Airlines
Sun 11/295:50 pm
KIX
-
STS
2 stops39h 03m
American Airlines
Deal found 2/10$1,505
This KAYAK deal was found by Cheapflights users on 2/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/237:57 pm
STS
-
KIX
2 stops49h 18m
Japan Airlines
Sat 3/79:00 pm
KIX
-
STS
2 stops42h 50m
Japan Airlines
Deal found 2/12$1,564
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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.
Fri 2/2011:15 am
STS
-
KIX
2 stops52h 10m
Multiple Airlines
Fri 3/69:00 pm
KIX
-
STS
2 stops41h 52m
Multiple Airlines
Deal found 2/12$1,576
This KAYAK deal was found by Cheapflights users on 2/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/217:00 am
STS
-
KIX
1 stop18h 50m
Japan Airlines
Sat 3/79:00 pm
KIX
-
STS
2 stops42h 50m
Japan Airlines
Deal found 2/12$1,591
This KAYAK deal was found by Cheapflights users on 2/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/207:00 am
STS
-
KIX
2 stops38h 15m
Japan Airlines
Sun 3/87:00 am
KIX
-
STS
2 stops32h 50m
Japan Airlines
Deal found 2/12$1,598
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/194:23 pm
STS
-
KIX
2 stops57h 27m
American Airlines
Wed 3/45:50 pm
KIX
-
STS
2 stops35h 43m
American Airlines
Deal found 2/12$1,600
This Japan Airlines deal was found by Cheapflights users on 2/14. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/241:00 pm
STS
-
ITM
2 stops37h 50m
Multiple Airlines
Tue 7/147:05 am
ITM
-
STS
2 stops21h 20m
Multiple Airlines
Deal found 2/14$1,669
This oojo deal was found by Cheapflights users on 2/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/306:53 pm
STS
-
KIX
2 stops43h 47m
Cathay Pacific
Mon 4/65:35 pm
KIX
-
STS
2 stops40h 26m
Cathay Pacific
Deal found 2/13$1,694

Find flight deals from Santa Rosa to Osaka

Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to Osaka (OSA). 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 February 14, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$1,444
(Alaska Airlines)

One-way from

$1,086
(Japan Airlines)

Popular in

December

Cheapest in

October

Average price

$845
Provider with most accurate pricing for Santa Rosa Sonoma County-Osaka (OSA) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Santa Rosa Sonoma County-Osaka (OSA) flights.
Search Deals
From Santa Rosa Sonoma County to Osaka (OSA)
Search Deals
One-way flight from Santa Rosa Sonoma County to Osaka (OSA)
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($61 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Santa Rosa to Osaka 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 February 14, 2026.
Use the filters below to find and compare flights from Santa Rosa to Osaka that are best for you.

Fly from

Santa Rosa

Fly to

Osaka

Route

Depart

Return

Price

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Wed 2/25

7:57 pm-2:15 pm

2 stops49h 18m

Osaka Kansai Intl

Sun 3/8

9:00 pm-11:50 pm

2 stops42h 50m

$1,444

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Wed 2/25

11:15 am-2:15 pm

2 stops58h 00m

Osaka Kansai Intl

Sat 3/7

7:00 am-9:52 pm

2 stops31h 52m

$1,444

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Wed 2/25

11:15 am-2:15 pm

2 stops58h 00m

Osaka Kansai Intl

Fri 3/6

9:00 pm-9:52 pm

2 stops41h 52m

$1,444

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Wed 2/25

7:57 pm-8:25 am

2 stops43h 28m

Osaka Kansai Intl

Mon 3/9

7:00 am-11:50 pm

2 stops32h 50m

$1,444

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Tue 2/24

7:57 pm-10:20 pm

2 stops33h 23m

Osaka Kansai Intl

Mon 3/9

7:00 am-11:50 pm

2 stops32h 50m

$1,564

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Tue 2/24

7:57 pm-10:20 pm

2 stops33h 23m

Osaka Kansai Intl

Sat 3/7

9:00 pm-10:50 pm

2 stops42h 50m

$1,564

Santa RosaOsaka

STS - ITM

STSITM

Santa Rosa Sonoma County

Wed 6/24

1:00 pm-6:50 pm

2 stops37h 50m

Osaka Itami

Tue 7/14

7:05 am-12:25 pm

2 stops21h 20m

$1,669

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Mon 3/30

6:53 pm-6:40 am

2 stops43h 47m

Osaka Kansai Intl

Mon 4/6

5:35 pm-6:01 pm

2 stops40h 26m

$1,694

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Tue 3/3

7:00 am-6:45 pm

2 stops42h 45m

Osaka Kansai Intl

Thu 3/5

8:45 pm-10:11 am

2 stops54h 26m

$1,722

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Wed 2/25

7:57 pm-10:20 pm

2 stops33h 23m

Osaka Kansai Intl

Thu 3/5

7:00 am-11:50 pm

2 stops33h 50m

$1,748

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/12

Showing 1-10 of 32 results
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  • Most accurate provider: When it comes to deals on Santa Rosa-Osaka flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Santa Rosa-Osaka flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Santa Rosa-Osaka flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Santa Rosa-Osaka flights, Cheapflights users trust Expedia the most. Expedia 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 Santa Rosa-Osaka 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 Santa Rosa to Osaka

Have a flexible travel schedule? Discover the best time to fly to Osaka from Santa Rosa 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 Santa Rosa to Osaka

What is the cheapest month to book a flight from Santa Rosa to Osaka?

Currently, October is the cheapest month in which you can book a flight from Santa Rosa to Osaka (average of $327). Flying from Santa Rosa to Osaka in May is currently the most expensive (average of $863). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Santa Rosa to Osaka. 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 from for flights from Santa Rosa to Osaka?

    Most people fly from Santa Rosa Sonoma County (STS) if they book a flight from Santa Rosa to Osaka. On average, Sonoma County has 0 outbound flights to Osaka per day from 0 airlines. Santa Rosa Sonoma County is conveniently located just 7.2 mi from Santa Rosa’s city center.

  • How long is the flight from Santa Rosa to Osaka?

    A quick flight from Santa Rosa to Osaka can take about 33h 23m. Japan Airlines provides one of the quickest options available for as low as $1,564. Airlines will cover a distance of 5343 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

  • How can I find direct flights from Santa Rosa to Osaka?

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

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

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

  • What is the cheapest month to book a flight from Santa Rosa to Osaka?

    Currently, October is the cheapest month in which you can book a flight from Santa Rosa to Osaka (average of $327). Flying from Santa Rosa to Osaka in May is currently the most expensive (average of $863). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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