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$704+ Cheap flights from Santa Rosa (STS) to Australia

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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SYD
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
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Find 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 October 23, 2025.

This SmartFares deal was found by Cheapflights users on 10/21. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/288:03 pmSTS - SYD
2 stops29h 42mAlaska Airlines
Sat 11/89:40 pmSYD - STS
2 stops21h 17mAlaska Airlines
Deal found 10/21$981
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/237:40 amSTS - SYD
2 stops41h 05mAlaska Airlines
Tue 12/29:40 pmSYD - STS
2 stops31h 39mAlaska Airlines
Deal found 10/23$1,003
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:58 pmSTS - SYD
2 stops53h 47mAlaska Airlines
Sat 12/139:40 pmSYD - STS
2 stops31h 39mAlaska Airlines
Deal found 10/22$1,025
This oojo deal was found by Cheapflights users on 10/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:00 amSTS - MEL
2 stops31h 25mMultiple Airlines
Sun 12/146:55 pmMEL - STS
2 stops41h 24mMultiple Airlines
Deal found 10/23$1,138
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:00 amSTS - SYD
1 stop29h 25mMultiple Airlines
Sat 12/135:45 pmSYD - STS
1 stop18h 34mMultiple Airlines
Deal found 10/22$1,146
This oojo deal was found by Cheapflights users on 10/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:55 pmSTS - MEL
2 stops42h 30mMultiple Airlines
Sat 12/136:50 pmMEL - STS
2 stops41h 29mMultiple Airlines
Deal found 10/22$1,225
This oojo deal was found by Cheapflights users on 10/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/58:03 pmSTS - MEL
2 stops43h 52mMultiple Airlines
Fri 12/126:55 pmMEL - STS
2 stops41h 24mMultiple Airlines
Deal found 10/21$1,245
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:54 pmSTS - SYD
2 stops29h 51mAlaska Airlines
Fri 12/129:40 pmSYD - STS
2 stops34h 49mAlaska Airlines
Deal found 10/21$1,259
This Jetabroad deal was found by Cheapflights users on 10/21. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/52:06 pmSTS - SYD
3 stops34h 39mHawaiian Airlines
Fri 12/129:40 pmSYD - STS
2 stops31h 39mHawaiian Airlines
Deal found 10/21$1,362
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/512:57 pmSTS - SYD
2 stops23h 28mAmerican Airlines
Fri 12/1211:20 amSYD - STS
1 stop31h 32mAmerican Airlines
Deal found 10/21$1,506
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:45 amSTS - SYD
1 stop29h 40mMultiple Airlines
Sat 11/85:45 pmSYD - STS
1 stop19h 09mMultiple Airlines
Deal found 10/21$1,560
This oojo deal was found by Cheapflights users on 10/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/78:03 pmSTS - MEL
2 stops45h 27mCathay Pacific
Sat 12/1312:45 amMEL - STS
2 stops35h 34mCathay Pacific
Deal found 10/23$1,633

Cheap 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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,003
(Alaska Airlines)

One-way from

$704
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$1,193
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
One-way flight from Santa Rosa Sonoma County to Australia
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($208 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 23, 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 RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Tue 11/25

7:40 am-7:45 pm

2 stops41h 05m

Sydney Kingsford Smith

Tue 12/2

9:40 pm-10:19 am

2 stops31h 39m

$1,003

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Thu 3/26

1:22 pm-7:45 pm

2 stops36h 23m

Sydney Kingsford Smith

Thu 4/23

9:40 pm-8:45 am

2 stops28h 05m

$1,025

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Fri 3/27

1:22 pm-7:45 pm

2 stops36h 23m

Sydney Kingsford Smith

Sun 4/26

9:40 pm-8:45 am

2 stops28h 05m

$1,025

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Mon 3/30

7:47 pm-7:45 pm

2 stops53h 58m

Sydney Kingsford Smith

Tue 4/28

9:40 pm-8:45 am

2 stops28h 05m

$1,026

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Mon 3/30

7:47 pm-7:45 pm

2 stops53h 58m

Sydney Kingsford Smith

Thu 4/23

9:40 pm-8:45 am

2 stops28h 05m

$1,026

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Mon 3/30

7:47 pm-7:45 pm

2 stops53h 58m

Sydney Kingsford Smith

Fri 4/24

9:40 pm-8:45 am

2 stops28h 05m

$1,026

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Mon 1/5

7:52 pm-7:45 pm

2 stops52h 53m

Sydney Kingsford Smith

Mon 1/19

9:40 pm-10:25 am

2 stops31h 45m

$1,186

Santa RosaMelbourne

STS - MEL

STSMEL

Santa Rosa Sonoma County

Sat 12/6

7:55 pm-9:25 am

2 stops42h 30m

Melbourne

Sat 12/13

6:50 pm-5:19 pm

2 stops41h 29m

$1,225

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Fri 12/5

6:54 pm-7:45 pm

2 stops29h 51m

Sydney Kingsford Smith

Fri 12/12

9:40 pm-1:29 pm

2 stops34h 49m

$1,259

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 3/25

1:22 pm-9:00 am

1 stop25h 38m

Sydney Kingsford Smith

Mon 4/27

9:10 am-11:41 pm

1 stop31h 31m

$1,452

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/23

Showing 1-10 of 57 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 $222). Flying from Santa Rosa to Australia in December is currently the most expensive (average of $856). 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 $1,753, Alaska Airlines can have you in Australia from Santa Rosa in 22h 01m. Santa Rosa and Australia are separated by a distance of 7070 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 - Sydney Kingsford Smith. You may also consider Santa Rosa Sonoma County - Melbourne 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 $222). Flying from Santa Rosa to Australia in December is currently the most expensive (average of $856). 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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