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$860+ 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 6/24. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SYD
mar. 5 — mar. 121
tor. 3/5
tor. 3/12
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 februar 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
tir. 3/107:00 am
STS
-
SYD
1 stop30h 25m
Multiple Airlines
ons. 3/182:00 pm
SYD
-
STS
2 stops27h 59m
Multiple Airlines
Deal found 2/2$1,106
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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.
tir. 10/137:23 pm
STS
-
SYD
2 stops29h 27m
Multiple Airlines
lør. 10/319:40 pm
SYD
-
STS
2 stops20h 05m
Multiple Airlines
Deal found 2/2$1,264
This American Airlines deal was found by Cheapflights users on 2/1. 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.
man. 2/27:00 am
STS
-
BNE
2 stops29h 30m
American Airlines
man. 2/99:40 am
BNE
-
STS
2 stops31h 18m
American Airlines
Deal found 2/1$1,301
This American Airlines deal was found by Cheapflights users on 2/1. 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.
fre. 2/612:55 pm
STS
-
BNE
2 stops22h 05m
American Airlines
tir. 2/177:40 pm
BNE
-
STS
2 stops34h 53m
American Airlines
Deal found 2/1$1,302
This American Airlines deal was found by Cheapflights users on 2/1. 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.
søn. 2/812:55 pm
STS
-
BNE
2 stops23h 35m
American Airlines
tir. 2/177:40 pm
BNE
-
STS
2 stops34h 53m
American Airlines
Deal found 2/1$1,309
This American Airlines deal was found by Cheapflights users on 2/1. 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.
fre. 2/612:55 pm
STS
-
BNE
2 stops22h 05m
American Airlines
man. 2/169:40 am
BNE
-
STS
2 stops66h 31m
American Airlines
Deal found 2/1$1,310
This American Airlines deal was found by Cheapflights users on 2/1. 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.
man. 2/24:23 pm
STS
-
BNE
2 stops42h 37m
American Airlines
fre. 2/139:40 am
BNE
-
STS
2 stops44h 53m
American Airlines
Deal found 2/1$1,316
This American Airlines deal was found by Cheapflights users on 2/1. 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.
søn. 2/14:23 pm
STS
-
BNE
2 stops44h 07m
American Airlines
man. 2/99:40 am
BNE
-
STS
2 stops31h 18m
American Airlines
Deal found 2/1$1,317
This American Airlines deal was found by Cheapflights users on 2/1. 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.
søn. 2/14:23 pm
STS
-
BNE
2 stops44h 07m
American Airlines
tir. 2/107:40 pm
BNE
-
STS
2 stops34h 55m
American Airlines
Deal found 2/1$1,318
This American Airlines deal was found by Cheapflights users on 2/1. 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.
søn. 2/14:23 pm
STS
-
BNE
2 stops44h 07m
American Airlines
fre. 2/139:40 am
BNE
-
STS
2 stops48h 07m
American Airlines
Deal found 2/1$1,324
This American Airlines deal was found by Cheapflights users on 2/2. 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.
tir. 3/1012:56 pm
STS
-
SYD
2 stops26h 04m
American Airlines
ons. 3/1811:20 am
SYD
-
STS
2 stops22h 33m
American Airlines
Deal found 2/2$1,397
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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.
tor. 2/57:56 pm
STS
-
SYD
2 stops28h 49m
Multiple Airlines
lør. 2/149:40 pm
SYD
-
STS
2 stops31h 31m
Multiple Airlines
Deal found 2/1$1,431

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 februar 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,106
(Kiwi.com)

One-way from

$860
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$1,054
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. 11% potential increase in price ($151 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 februar 3, 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

tir. 3/10

7:00 am-7:25 am

1 stop30h 25m

Sydney Kingsford Smith

ons. 3/18

5:45 pm-7:13 pm

1 stop19h 28m

$1,341

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

tir. 3/10

12:56 pm-9:00 am

2 stops26h 04m

Sydney Kingsford Smith

ons. 3/18

11:20 am-3:53 pm

2 stops22h 33m

$1,397

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

lør. 2/28

1:03 pm-9:00 am

2 stops24h 57m

Sydney Kingsford Smith

lør. 3/7

11:20 am-10:11 am

1 stop17h 51m

$1,600

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

lør. 2/28

7:00 am-9:00 am

1 stop31h 00m

Sydney Kingsford Smith

ons. 3/4

11:20 am-10:11 am

1 stop17h 51m

$1,791

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

tir. 3/10

7:00 am-8:50 pm

3 stops43h 50m

Sydney Kingsford Smith

ons. 3/18

5:50 pm-11:59 pm

3 stops48h 09m

$1,907

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

lør. 2/28

4:17 pm-9:00 am

2 stops21h 43m

Sydney Kingsford Smith

lør. 3/7

5:45 pm-9:52 pm

2 stops23h 07m

$2,184

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

søn. 5/17

8:20 am-6:20 am

2 stops29h 00m

Sydney Kingsford Smith

søn. 5/24

8:55 am-9:22 pm

2 stops53h 27m

$2,613

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

fre. 2/27

11:15 am-6:50 am

2 stops48h 35m

Sydney Kingsford Smith

søn. 3/8

6:15 pm-10:50 pm

3 stops47h 35m

$2,637

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

søn. 5/17

8:20 am-6:20 am

2 stops29h 00m

Sydney Kingsford Smith

lør. 5/23

8:55 am-9:22 pm

2 stops53h 27m

$2,820

Santa RosaHamilton Island

STS - HTI

STSHTI

Santa Rosa Sonoma County

tir. 5/12

7:10 pm-12:15 pm

2 stops24h 05m

Hamilton Island

lør. 5/16

2:50 pm-9:22 pm

2 stops23h 32m

$2,832

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 33 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 $837). 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 $2,832, American Airlines 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 - Brisbane 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 $837). 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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