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$668+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SYD
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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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 January 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$1,746
(Alaska Airlines)

One-way from

$668
(Alaska Airlines)

Popular in

December

Cheapest in

February

Average price

$1,245
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
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One-way flight from Santa Rosa Sonoma County to Australia
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Highest demand for flights based on searches. 11% potential increase in price ($156 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 14, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/14. 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 2/287:00 am
STS
-
BNE
2 stops33h 35m
Multiple Airlines
Sat 3/77:40 pm
BNE
-
STS
1 stop31h 31m
Multiple Airlines
Deal found 1/14$1,145
This oojo deal was found by Cheapflights users on 1/14. 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 2/287:00 am
STS
-
BNE
2 stops30h 00m
Air New Zealand
Sat 3/76:05 pm
BNE
-
STS
2 stops46h 52m
Air New Zealand
Deal found 1/14$1,169
This oojo deal was found by Cheapflights users on 1/14. 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 2/287:00 am
STS
-
SYD
2 stops30h 45m
Air New Zealand
Sat 3/77:15 pm
SYD
-
STS
2 stops46h 42m
Air New Zealand
Deal found 1/14$1,171
This American Airlines deal was found by Cheapflights users on 1/14. 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.
Sat 2/281:03 pm
STS
-
SYD
2 stops24h 57m
American Airlines
Sat 3/711:20 am
SYD
-
STS
1 stop17h 51m
American Airlines
Deal found 1/14$1,392
This Alaska Airlines deal was found by Cheapflights users on 1/14. 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 3/297:05 am
STS
-
SYD
2 stops41h 45m
Multiple Airlines
Sun 4/58:45 pm
SYD
-
STS
2 stops19h 30m
Multiple Airlines
Deal found 1/14$1,425
This Alaska Airlines deal was found by Cheapflights users on 1/13. 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 10/157:23 pm
STS
-
SYD
1 stop18h 42m
Alaska Airlines
Wed 10/2811:15 am
SYD
-
STS
1 stop24h 52m
Alaska Airlines
Deal found 1/13$1,438
This American Airlines deal was found by Cheapflights users on 1/13. 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.
Sun 10/1112:45 pm
STS
-
BNE
2 stops23h 15m
American Airlines
Fri 10/307:40 pm
BNE
-
STS
2 stops33h 41m
American Airlines
Deal found 1/13$1,442
This Alaska Airlines deal was found by Cheapflights users on 1/13. 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 10/127:23 pm
STS
-
SYD
1 stop18h 42m
Alaska Airlines
Fri 10/3011:15 am
SYD
-
STS
1 stop30h 30m
Alaska Airlines
Deal found 1/13$1,446
This American Airlines deal was found by Cheapflights users on 1/13. 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.
Sun 10/1112:45 pm
STS
-
BNE
2 stops23h 15m
American Airlines
Tue 10/279:45 am
BNE
-
STS
2 stops31h 00m
American Airlines
Deal found 1/13$1,449
This American Airlines deal was found by Cheapflights users on 1/13. 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.
Wed 10/144:20 pm
STS
-
BNE
2 stops43h 40m
American Airlines
Fri 10/307:40 pm
BNE
-
STS
2 stops33h 41m
American Airlines
Deal found 1/13$1,458
This American Airlines deal was found by Cheapflights users on 1/13. 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.
Sun 10/1112:45 pm
STS
-
BNE
2 stops23h 15m
American Airlines
Sun 10/257:40 pm
BNE
-
STS
2 stops57h 21m
American Airlines
Deal found 1/13$1,463
This American Airlines deal was found by Cheapflights users on 1/13. 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.
Wed 10/1412:45 pm
STS
-
BNE
2 stops47h 15m
American Airlines
Tue 10/279:45 am
BNE
-
STS
2 stops23h 02m
American Airlines
Deal found 1/13$1,465

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 14, 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 RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Sat 2/28

7:00 am-10:35 am

2 stops33h 35m

Brisbane

Sat 3/7

7:40 pm-9:11 am

1 stop31h 31m

$1,145

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Sat 2/28

7:00 am-7:00 am

2 stops30h 00m

Brisbane

Sat 3/7

6:05 pm-10:57 pm

2 stops46h 52m

$1,169

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Sat 2/28

7:00 am-8:45 am

2 stops30h 45m

Sydney Kingsford Smith

Sat 3/7

7:15 pm-10:57 pm

2 stops46h 42m

$1,171

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 3/25

7:02 pm-7:45 pm

2 stops30h 43m

Sydney Kingsford Smith

Sun 4/5

8:45 pm-11:15 pm

2 stops19h 30m

$1,471

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Fri 3/27

7:53 pm-8:05 am

1 stop18h 12m

Sydney Kingsford Smith

Sun 4/5

9:10 am-11:30 am

1 stop19h 20m

$1,478

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Sat 3/28

7:53 pm-8:05 am

1 stop18h 12m

Sydney Kingsford Smith

Mon 4/6

9:10 am-11:30 am

1 stop19h 20m

$1,478

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Thu 3/26

12:10 pm-9:00 am

1 stop26h 50m

Sydney Kingsford Smith

Sat 4/4

10:10 am-7:13 pm

1 stop27h 03m

$1,478

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Thu 3/26

12:10 pm-9:00 am

1 stop26h 50m

Sydney Kingsford Smith

Sun 4/5

9:10 am-11:30 am

1 stop19h 20m

$1,478

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 3/25

7:53 pm-9:00 am

1 stop19h 07m

Sydney Kingsford Smith

Sun 4/5

9:10 am-11:30 am

1 stop19h 20m

$1,478

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Fri 3/27

12:10 pm-8:05 am

1 stop25h 55m

Sydney Kingsford Smith

Sat 4/4

10:10 am-7:13 pm

1 stop27h 03m

$1,478

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 40 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 $836). 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 $1,478, Air New Zealand 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 - 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 $222). Flying from Santa Rosa to Australia in December is currently the most expensive (average of $836). 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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