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$673+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SYD
Dec 10 — Dec 171
Wed 12/10
Wed 12/17
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 November 10, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 12/115:59 pmSTS - SYD
2 stops30h 46mAlaska Airlines
Tue 1/139:40 pmSYD - STS
2 stops31h 45mAlaska Airlines
Deal found 11/9$1,337
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 12/115:59 pmSTS - SYD
2 stops30h 46mAlaska Airlines
Mon 1/129:40 pmSYD - STS
2 stops21h 19mAlaska Airlines
Deal found 11/9$1,344
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 12/107:00 amSTS - SYD
2 stops41h 45mAlaska Airlines
Tue 1/139:40 pmSYD - STS
2 stops31h 45mAlaska Airlines
Deal found 11/9$1,359
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 12/115:59 pmSTS - SYD
2 stops30h 46mAlaska Airlines
Sat 12/279:40 pmSYD - STS
2 stops31h 54mAlaska Airlines
Deal found 11/9$1,364
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 12/107:00 amSTS - SYD
2 stops41h 45mAlaska Airlines
Mon 1/129:40 pmSYD - STS
2 stops21h 19mAlaska Airlines
Deal found 11/9$1,366
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 12/107:00 amSTS - SYD
2 stops41h 45mAlaska Airlines
Mon 12/299:40 pmSYD - STS
2 stops21h 38mAlaska Airlines
Deal found 11/9$1,386
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 12/118:03 pmSTS - SYD
2 stops28h 42mAlaska Airlines
Sat 1/109:40 pmSYD - STS
2 stops31h 16mAlaska Airlines
Deal found 11/9$1,439
This American Airlines deal was found by Cheapflights users on 11/8. 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.
Tue 12/304:21 pmSTS - BNE
2 stops44h 09mAmerican Airlines
Sun 2/112:10 pmBNE - STS
2 stops21h 43mAmerican Airlines
Deal found 11/8$1,452
This American Airlines deal was found by Cheapflights users on 11/8. 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.
Tue 12/304:21 pmSTS - BNE
2 stops44h 09mAmerican Airlines
Mon 2/27:40 pmBNE - STS
2 stops34h 45mAmerican Airlines
Deal found 11/8$1,461
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 12/107:00 amSTS - SYD
2 stops41h 45mAlaska Airlines
Fri 1/99:40 pmSYD - STS
2 stops21h 19mAlaska Airlines
Deal found 11/9$1,461
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 12/118:03 pmSTS - SYD
2 stops28h 42mAlaska Airlines
Sun 12/289:40 pmSYD - STS
2 stops21h 38mAlaska Airlines
Deal found 11/9$1,485
This American Airlines deal was found by Cheapflights users on 11/8. 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.
Tue 12/304:21 pmSTS - BNE
2 stops44h 09mAmerican Airlines
Thu 1/299:40 amBNE - STS
2 stops24h 13mAmerican Airlines
Deal found 11/8$1,502

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 November 10, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$1,164
(Alaska Airlines)

One-way from

$673
(Ovago)

Popular in

December

Cheapest in

February

Average price

$1,225
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. 14% potential increase in price ($197 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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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 November 10, 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

Sun 4/19

7:47 pm-7:45 pm

2 stops30h 58m

Sydney Kingsford Smith

Thu 4/23

9:40 pm-11:14 am

2 stops30h 34m

$1,164

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Sat 2/28

12:58 pm-5:00 am

2 stops22h 02m

Brisbane

Wed 3/4

9:40 am-3:57 pm

2 stops24h 17m

$1,256

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 12/10

7:00 am-7:45 pm

2 stops41h 45m

Sydney Kingsford Smith

Tue 12/30

9:40 pm-11:59 pm

2 stops21h 19m

$1,461

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Tue 12/30

4:21 pm-6:30 am

2 stops44h 09m

Brisbane

Sat 1/31

9:40 am-9:56 am

2 stops42h 16m

$1,502

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Tue 12/30

4:21 pm-6:30 am

2 stops44h 09m

Brisbane

Thu 1/29

9:40 am-3:53 pm

2 stops24h 13m

$1,502

Santa RosaMelbourne

STS - MEL

STSMEL

Santa Rosa Sonoma County

Tue 5/5

7:47 pm-10:35 am

2 stops21h 48m

Melbourne

Tue 6/2

9:45 am-11:06 am

1 stop18h 21m

$1,571

Santa RosaMelbourne

STS - MEL

STSMEL

Santa Rosa Sonoma County

Tue 5/5

7:00 am-6:45 am

1 stop30h 45m

Melbourne

Thu 5/28

9:45 am-11:30 pm

1 stop30h 45m

$1,597

Santa RosaMelbourne

STS - MEL

STSMEL

Santa Rosa Sonoma County

Wed 5/6

7:00 am-6:45 am

1 stop30h 45m

Melbourne

Sat 5/30

9:45 am-11:30 pm

1 stop30h 45m

$1,597

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Mon 12/29

3:53 pm-6:30 am

2 stops44h 37m

Brisbane

Wed 1/28

9:40 am-9:56 am

2 stops42h 16m

$1,621

Santa RosaBrisbane

STS - BNE

STSBNE

Santa Rosa Sonoma County

Mon 12/29

3:53 pm-6:30 am

2 stops44h 37m

Brisbane

Tue 1/27

9:40 am-3:53 pm

2 stops24h 13m

$1,621

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 46 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 $224). 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 $1,571, Alaska Airlines can have you in Australia from Santa Rosa in 21h 48m. 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 - 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 $224). 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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