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$648+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SYD
Jan 31 — Feb 71
Sat 1/31
Sat 2/7
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 January 1, 2026.

This Qantas Airways deal was found by Cheapflights users on 12/30. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:53 pmSTS - SYD
1 stop20h 32mQantas Airways
Mon 1/124:15 pmSYD - STS
2 stops25h 43mQantas Airways
Deal found 12/30$2,934
This Qantas Airways deal was found by Cheapflights users on 12/30. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:53 pmSTS - SYD
2 stops25h 37mQantas Airways
Sun 1/119:55 pmSYD - STS
2 stops44h 03mQantas Airways
Deal found 12/30$2,952
This Qantas Airways deal was found by Cheapflights users on 12/30. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:53 pmSTS - SYD
1 stop20h 32mQantas Airways
Fri 1/910:35 amSYD - STS
2 stops31h 23mQantas Airways
Deal found 12/30$2,984
This Qantas Airways deal was found by Cheapflights users on 12/30. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:53 pmSTS - SYD
1 stop20h 32mQantas Airways
Wed 1/77:30 pmSYD - STS
2 stops46h 28mQantas Airways
Deal found 12/30$2,995
This Qantas Airways deal was found by Cheapflights users on 12/30. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:53 pmSTS - SYD
2 stops25h 37mQantas Airways
Thu 1/89:55 pmSYD - STS
2 stops44h 03mQantas Airways
Deal found 12/30$3,002
This Qantas Airways deal was found by Cheapflights users on 12/30. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:53 pmSTS - SYD
1 stop20h 32mQantas Airways
Tue 1/65:45 pmSYD - STS
1 stop35h 40mQantas Airways
Deal found 12/30$3,162
This Qantas Airways deal was found by Cheapflights users on 12/30. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/313:53 pmSTS - SYD
2 stops25h 37mQantas Airways
Sat 1/107:00 pmSYD - STS
2 stops46h 58mQantas Airways
Deal found 12/30$3,600

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 January 1, 2026.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$1,258
(Alaska Airlines)

One-way from

$648
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,295
Provider with most accurate pricing for San Francisco-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Sydney Kingsford Smith flights.
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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. 13% potential increase in price ($182 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 1, 2026.
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

Sun 5/10

7:00 am-6:50 pm

2 stops42h 50m

Sydney Kingsford Smith

Tue 5/26

8:45 pm-10:11 am

2 stops30h 26m

$1,258

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Tue 6/2

5:21 pm-6:50 pm

2 stops32h 29m

Sydney Kingsford Smith

Fri 6/12

8:45 pm-1:33 pm

2 stops33h 48m

$1,287

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Mon 6/1

5:21 pm-6:50 pm

2 stops56h 29m

Sydney Kingsford Smith

Fri 6/12

8:45 pm-10:17 am

2 stops30h 32m

$1,292

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Sun 5/10

7:00 am-6:50 pm

2 stops42h 50m

Sydney Kingsford Smith

Thu 5/21

8:45 pm-9:22 pm

2 stops41h 37m

$1,295

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 5/6

7:10 pm-7:05 am

1 stop18h 55m

Sydney Kingsford Smith

Wed 5/27

9:10 am-11:25 am

1 stop19h 15m

$1,438

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Sat 2/28

7:00 am-9:00 am

1 stop31h 00m

Sydney Kingsford Smith

Wed 3/4

11:20 am-10:11 am

1 stop17h 51m

$1,445

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Thu 5/7

7:00 am-7:05 am

1 stop31h 05m

Sydney Kingsford Smith

Wed 5/27

9:10 am-11:25 am

1 stop19h 15m

$1,446

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 5/6

7:10 pm-7:05 am

1 stop18h 55m

Sydney Kingsford Smith

Sun 5/24

9:10 am-9:22 pm

1 stop29h 12m

$1,446

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Mon 5/4

6:51 pm-7:05 am

1 stop19h 14m

Sydney Kingsford Smith

Thu 5/21

9:10 am-9:22 pm

1 stop29h 12m

$1,446

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Tue 5/5

7:10 pm-7:05 am

1 stop18h 55m

Sydney Kingsford Smith

Sat 5/23

9:10 am-9:22 pm

1 stop29h 12m

$1,446

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/31

Showing 1-10 of 38 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 $2,823, Qatar Airways can have you in Australia from Santa Rosa in 24h 05m. Santa Rosa and Australia are separated by a distance of 6986 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 - Bundaberg.

  • 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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