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$944+ 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SYD
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
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 23, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Wed 12/243:53 pmSTS - SYD
1 stop22h 07mAlaska Airlines
Mon 12/2911:20 amSYD - STS
1 stop31h 58mAlaska Airlines
Deal found 12/22$2,446
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Sun 12/287:00 amSTS - SYD
2 stops41h 45mMultiple Airlines
Wed 12/319:40 pmSYD - STS
2 stops32h 43mMultiple Airlines
Deal found 12/22$2,495
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Thu 12/256:37 pmSTS - SYD
1 stop19h 23mAlaska Airlines
Mon 12/2911:20 amSYD - STS
1 stop31h 58mAlaska Airlines
Deal found 12/22$2,496
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Wed 12/247:00 amSTS - SYD
2 stops41h 45mMultiple Airlines
Wed 12/319:40 pmSYD - STS
2 stops32h 43mMultiple Airlines
Deal found 12/22$2,563
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Wed 12/247:00 amSTS - SYD
2 stops41h 45mMultiple Airlines
Sun 12/289:40 pmSYD - STS
2 stops31h 51mMultiple Airlines
Deal found 12/22$2,571
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Wed 12/243:53 pmSTS - SYD
1 stop22h 07mAlaska Airlines
Wed 12/3111:20 amSYD - STS
1 stop18h 11mAlaska Airlines
Deal found 12/22$2,587
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Wed 12/243:53 pmSTS - SYD
1 stop22h 07mAlaska Airlines
Sun 12/2811:20 amSYD - STS
1 stop31h 58mAlaska Airlines
Deal found 12/22$2,597
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Tue 12/237:00 amSTS - SYD
1 stop31h 00mAlaska Airlines
Mon 12/2911:20 amSYD - STS
1 stop31h 58mAlaska Airlines
Deal found 12/22$2,606
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Wed 12/247:00 amSTS - SYD
2 stops41h 45mMultiple Airlines
Mon 12/299:40 pmSYD - STS
2 stops21h 19mMultiple Airlines
Deal found 12/22$2,613
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Thu 12/256:37 pmSTS - SYD
1 stop19h 23mAlaska Airlines
Wed 12/3111:20 amSYD - STS
1 stop18h 11mAlaska Airlines
Deal found 12/22$2,637
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Thu 12/256:37 pmSTS - SYD
1 stop19h 23mAlaska Airlines
Sun 12/2811:20 amSYD - STS
1 stop31h 58mAlaska Airlines
Deal found 12/22$2,647
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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.
Wed 12/247:00 amSTS - SYD
2 stops41h 45mMultiple Airlines
Tue 12/309:40 pmSYD - STS
2 stops45h 00mMultiple Airlines
Deal found 12/22$2,659

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 23, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$944
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$1,595
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 ($181 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 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 RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Wed 2/4

7:00 am-6:30 am

2 stops29h 30m

Brisbane

Wed 2/11

9:40 am-3:53 pm

2 stops24h 13m

$944

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Wed 2/4

7:00 am-6:30 am

2 stops29h 30m

Brisbane

Tue 2/17

7:40 pm-3:57 pm

2 stops38h 17m

$1,151

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Fri 2/6

4:23 pm-5:00 am

2 stops42h 37m

Brisbane

Tue 2/17

7:40 pm-3:57 pm

2 stops38h 17m

$1,151

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Fri 2/6

4:23 pm-5:00 am

2 stops42h 37m

Brisbane

Sun 2/15

7:40 pm-3:57 pm

2 stops38h 17m

$1,158

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Wed 2/4

7:00 am-6:30 am

2 stops29h 30m

Brisbane

Mon 2/16

9:40 am-3:57 pm

2 stops48h 17m

$1,158

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Thu 2/5

12:55 pm-6:30 am

2 stops47h 35m

Brisbane

Mon 2/16

9:40 am-12:30 pm

2 stops44h 50m

$1,165

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Thu 2/26

7:48 pm-9:00 am

1 stop18h 12m

Sydney Kingsford Smith

Mon 3/2

11:20 am-10:11 am

1 stop17h 51m

$1,586

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Wed 2/4

7:00 am-11:00 pm

2 stops46h 00m

Brisbane

Wed 2/11

6:30 pm-11:57 pm

3 stops47h 27m

$1,613

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Fri 1/30

7:56 pm-9:00 am

1 stop18h 04m

Sydney Kingsford Smith

Sun 2/8

11:20 am-9:56 am

1 stop17h 36m

$1,736

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Fri 2/6

12:55 pm-6:30 am

2 stops23h 35m

Brisbane

Mon 2/16

7:15 am-10:11 am

2 stops20h 56m

$1,857

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 18 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 $838). 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 $1,586, American Airlines can have you in Australia from Santa Rosa in 18h 12m. Santa Rosa and Australia are separated by a distance of 7430 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 - Brisbane. You may also consider Santa Rosa Sonoma County - Sydney Kingsford Smith or Santa Rosa Sonoma County - Melbourne.

  • 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 $838). 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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