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$1,128+ Cheap flights from Santa Rosa (STS) to Australia

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SYD
Jan 16 — Jan 231
Fri 1/16
Fri 1/23
1 adult, Economy
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Cheap flight deals from Santa Rosa to Australia

Cheapest flights from Santa Rosa to Australia
Explore the most affordable flight options available from Santa Rosa to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 12/243:53 pmSTS - SYD
2 stops32h 52mMultiple Airlines
Thu 1/89:40 pmSYD - STS
2 stops31h 16mMultiple Airlines
Deal found 12/15$2,203
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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.
Tue 12/237:00 amSTS - SYD
1 stop31h 00mAlaska Airlines
Tue 1/611:20 amSYD - STS
1 stop22h 53mAlaska Airlines
Deal found 12/15$2,255
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 12/243:53 pmSTS - SYD
2 stops32h 52mMultiple Airlines
Wed 12/319:40 pmSYD - STS
2 stops32h 43mMultiple Airlines
Deal found 12/15$2,271
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 12/196:00 amSTS - SYD
2 stops42h 45mMultiple Airlines
Wed 12/319:40 pmSYD - STS
2 stops32h 43mMultiple Airlines
Deal found 12/15$2,299
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 12/266:00 amSTS - SYD
2 stops42h 45mMultiple Airlines
Thu 1/89:40 pmSYD - STS
2 stops31h 16mMultiple Airlines
Deal found 12/15$2,352
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 12/243:53 pmSTS - SYD
2 stops32h 52mMultiple Airlines
Fri 1/99:40 pmSYD - STS
2 stops30h 18mMultiple Airlines
Deal found 12/15$2,360
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 12/196:00 amSTS - SYD
2 stops42h 45mMultiple Airlines
Mon 12/299:40 pmSYD - STS
2 stops31h 51mMultiple Airlines
Deal found 12/15$2,377
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 12/207:00 amSTS - SYD
2 stops41h 45mMultiple Airlines
Wed 12/319:40 pmSYD - STS
2 stops32h 43mMultiple Airlines
Deal found 12/15$2,384
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 12/207:00 amSTS - SYD
2 stops41h 45mMultiple Airlines
Mon 12/299:40 pmSYD - STS
2 stops31h 51mMultiple Airlines
Deal found 12/15$2,462
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 12/243:53 pmSTS - SYD
2 stops32h 52mMultiple Airlines
Wed 1/79:40 pmSYD - STS
2 stops30h 18mMultiple Airlines
Deal found 12/15$2,481
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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.
Mon 12/228:17 pmSTS - SYD
2 stops28h 28mMultiple Airlines
Wed 12/319:40 pmSYD - STS
2 stops32h 43mMultiple Airlines
Deal found 12/15$2,505
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 12/266:00 amSTS - SYD
2 stops42h 45mMultiple Airlines
Fri 1/99:40 pmSYD - STS
2 stops30h 18mMultiple Airlines
Deal found 12/15$2,509

Find flight deals from Santa Rosa to Australia

Keep the following information in mind while searching for Santa Rosa to Australia flight deals. Data was last updated December 17, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$1,128
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$1,593
Provider with most accurate pricing for San Francisco-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Sydney Kingsford Smith flights.
Search Deals
From Santa Rosa Sonoma County to Australia
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($182 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Santa Rosa to Australia 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 17, 2025.
Use the filters below to find and compare flights from Santa Rosa to Australia that are best for you.

Fly from

Santa Rosa

Fly to

Australia

Route

Depart

Return

Price

Santa RosaMelbourne

STS - MEL

STSMEL

Santa Rosa Sonoma County

Mon 2/16

1:00 pm-9:30 am

2 stops25h 30m

Melbourne

Fri 2/27

12:00 pm-3:57 pm

2 stops22h 57m

$1,128

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Fri 1/30

9:33 pm-7:45 pm

2 stops27h 12m

Sydney Kingsford Smith

Fri 2/6

9:40 pm-11:59 pm

2 stops21h 19m

$1,229

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 1/7

7:00 am-7:45 pm

2 stops65h 45m

Sydney Kingsford Smith

Mon 1/19

9:40 pm-10:25 am

2 stops31h 45m

$1,323

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 1/7

7:00 am-7:45 pm

2 stops65h 45m

Sydney Kingsford Smith

Wed 1/21

9:40 pm-9:56 am

2 stops31h 16m

$1,323

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 1/7

7:00 am-7:45 pm

2 stops65h 45m

Sydney Kingsford Smith

Thu 1/15

9:40 pm-10:58 pm

2 stops20h 18m

$1,323

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 1/7

7:00 am-7:45 pm

2 stops65h 45m

Sydney Kingsford Smith

Sat 1/17

9:40 pm-9:56 am

2 stops31h 16m

$1,342

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 1/7

7:00 am-7:45 pm

2 stops65h 45m

Sydney Kingsford Smith

Fri 1/16

9:40 pm-10:25 am

2 stops31h 45m

$1,342

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Fri 1/30

7:56 pm-7:25 am

1 stop40h 29m

Sydney Kingsford Smith

Fri 2/6

5:00 pm-10:58 pm

2 stops24h 58m

$1,348

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Mon 1/5

6:37 pm-7:45 pm

2 stops30h 08m

Sydney Kingsford Smith

Mon 1/19

9:40 pm-10:25 am

2 stops31h 45m

$1,387

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Sat 1/3

7:00 am-7:45 pm

2 stops41h 45m

Sydney Kingsford Smith

Thu 1/15

9:40 pm-10:58 pm

2 stops20h 18m

$1,407

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 34 results
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Best time to book a flight from Santa Rosa to Australia

Have a flexible travel schedule? Discover the best time to fly to Australia 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 Australia

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

Currently, January is the cheapest month in which you can book a flight from Santa Rosa to Australia (average of $223). Flying from Santa Rosa to Australia in December is currently the most expensive (average of $839). 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 Australia. 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 Australia?

    Located just 7.2 mi from the city center, Santa Rosa Sonoma County (STS) is the airport most travelers will use when flying to Australia from Santa Rosa.

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

    For as low as $1,128, American Airlines can have you in Australia from Santa Rosa in 25h 30m. Santa Rosa and Australia are separated by a distance of 7867 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Santa Rosa to Australia?

    The most popular route from Santa Rosa to Australia is Santa Rosa Sonoma County - Melbourne. You may also consider Santa Rosa Sonoma County - Sydney Kingsford Smith or Santa Rosa Sonoma County - Brisbane.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Santa Rosa to Australia 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 Australia?

    Currently, January is the cheapest month in which you can book a flight from Santa Rosa to Australia (average of $223). Flying from Santa Rosa to Australia in December is currently the most expensive (average of $839). 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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