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$487+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
STS — OSA
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
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 December 21, 2025.

This Qatar Airways deal was found by Cheapflights users on 12/19. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:00 amSTS - KIX
2 stops41h 25mMultiple Airlines
Mon 1/53:00 pmKIX - STS
3 stops60h 35mMultiple Airlines
Deal found 12/19$3,411
This Japan Airlines deal was found by Cheapflights users on 12/19. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:00 amSTS - KIX
1 stop18h 50mJapan Airlines
Mon 1/55:50 pmKIX - STS
1 stop14h 23mJapan Airlines
Deal found 12/19$4,009
This Qatar Airways deal was found by Cheapflights users on 12/19. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:00 amSTS - ITM
3 stops43h 55mMultiple Airlines
Mon 1/54:30 pmITM - STS
3 stops59h 05mMultiple Airlines
Deal found 12/19$4,477

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 December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$994
(Alaska Airlines)

One-way from

$487
(Japan Airlines)

Popular in

June

Cheapest in

October

Average price

$1,470
Provider with most accurate pricing for Santa Rosa Sonoma County-Osaka (OSA) flight deals.
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Provider most trusted by Cheapflights users for Santa Rosa Sonoma County-Osaka (OSA) flights.
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From Santa Rosa Sonoma County to Osaka (OSA)
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One-way flight from Santa Rosa Sonoma County to Osaka (OSA)
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Highest demand for flights based on searches. 18% potential increase in price ($228 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($48 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 21, 2025.
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 - ITM

STSITM

Santa Rosa Sonoma County

Sun 2/1

11:15 am-7:55 pm

2 stops39h 40m

Osaka Itami

Thu 2/5

2:40 pm-11:59 pm

2 stops26h 19m

$994

Santa RosaOsaka

STS - ITM

STSITM

Santa Rosa Sonoma County

Thu 1/22

9:33 pm-7:55 pm

2 stops29h 22m

Osaka Itami

Mon 1/26

2:40 pm-11:59 pm

2 stops26h 19m

$994

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Sun 1/4

6:37 pm-6:45 pm

2 stops31h 08m

Osaka Kansai Intl

Mon 1/12

8:45 pm-10:25 am

2 stops30h 40m

$1,933

Santa RosaOsaka

STS - ITM

STSITM

Santa Rosa Sonoma County

Sat 1/3

7:00 am-6:45 pm

2 stops18h 45m

Osaka Itami

Sun 1/11

2:40 pm-11:59 pm

2 stops26h 19m

$3,139

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Sat 1/3

7:00 am-5:50 am

3 stops53h 50m

Osaka Kansai Intl

Sun 1/11

5:55 pm-11:59 pm

2 stops47h 04m

$3,872

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Sat 1/3

7:00 am-5:50 am

3 stops53h 50m

Osaka Kansai Intl

Sun 1/11

4:55 pm-11:59 pm

3 stops48h 04m

$4,303

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Sun 1/4

6:00 am-4:25 pm

2 stops41h 25m

Osaka Kansai Intl

Sun 1/11

5:55 pm-11:59 pm

2 stops47h 04m

$4,923

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Fri 1/2

6:00 am-4:25 pm

2 stops41h 25m

Osaka Kansai Intl

Sun 1/11

5:55 pm-11:59 pm

2 stops47h 04m

$4,963

Santa RosaOsaka

STS - ITM

STSITM

Santa Rosa Sonoma County

Sat 1/3

7:00 am-7:55 pm

3 stops43h 55m

Osaka Itami

Sun 1/11

2:40 pm-11:59 pm

3 stops50h 19m

$5,759

Santa RosaOsaka

STS - KIX

STSKIX

Santa Rosa Sonoma County

Wed 4/22

7:00 am-6:45 pm

1 stop19h 45m

$487

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

Showing 1-10 of 20 results
1
2
  • Most accurate provider: When it comes to deals on Santa Rosa-Osaka flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Santa Rosa-Osaka flight deals on Cheapflights vs. eDreams >95% 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 eDreams the most. eDreams 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 $446). Flying from Santa Rosa to Osaka in December is currently the most expensive (average of $721). 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 18h 45m. Japan Airlines provides one of the quickest options available for as low as $3,139. Airlines will cover a distance of 5319 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 $446). Flying from Santa Rosa to Osaka in December is currently the most expensive (average of $721). 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

Traveling to a place near Osaka?

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