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$588+ Cheap flights from Santa Rosa (STS) to Sydney (SYD)

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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SYD
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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Cheap flight deals from Santa Rosa to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 15, 2025.

Round-trip from

$1,047
(Alaska Airlines)

One-way from

$588
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$1,143
From Santa Rosa Sonoma County to Sydney Kingsford Smith
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One-way flight from Santa Rosa Sonoma County to Sydney Kingsford Smith
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Highest demand for flights based on searches. 13% potential increase in price ($184 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Santa Rosa to Sydney

Cheapest flights from Santa Rosa to Sydney
Explore the most affordable flight options available from Santa Rosa to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 15, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/12. 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.
dom. 12/142:21 pmSTS - SYD
2 stops34h 24mAlaska Airlines
vie. 1/169:40 pmSYD - STS
2 stops35h 08mAlaska Airlines
Deal found 9/12$1,047
This Alaska Airlines deal was found by Cheapflights users on 9/12. 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.
dom. 12/142:21 pmSTS - SYD
2 stops34h 24mAlaska Airlines
sáb. 1/179:40 pmSYD - STS
2 stops35h 08mAlaska Airlines
Deal found 9/12$1,065
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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.
dom. 12/142:21 pmSTS - SYD
2 stops34h 24mAlaska Airlines
jue. 1/159:40 pmSYD - STS
2 stops35h 08mAlaska Airlines
Deal found 9/14$1,084
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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.
mar. 12/168:00 amSTS - SYD
2 stops40h 45mAlaska Airlines
mar. 1/139:40 pmSYD - STS
2 stops20h 06mAlaska Airlines
Deal found 9/14$1,099
This Alaska Airlines deal was found by Cheapflights users on 9/12. 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.
lun. 12/156:43 pmSTS - SYD
2 stops54h 02mAlaska Airlines
mié. 1/149:40 pmSYD - STS
2 stops20h 06mAlaska Airlines
Deal found 9/12$1,104
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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.
mar. 12/168:00 amSTS - SYD
2 stops40h 45mAlaska Airlines
dom. 1/119:40 pmSYD - STS
2 stops32h 27mAlaska Airlines
Deal found 9/14$1,109
This Alaska Airlines deal was found by Cheapflights users on 9/12. 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.
mar. 12/168:00 amSTS - SYD
2 stops40h 45mAlaska Airlines
vie. 1/169:40 pmSYD - STS
2 stops20h 06mAlaska Airlines
Deal found 9/12$1,117
This Alaska Airlines deal was found by Cheapflights users on 9/12. 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.
lun. 12/156:43 pmSTS - SYD
2 stops54h 02mAlaska Airlines
vie. 1/169:40 pmSYD - STS
2 stops20h 06mAlaska Airlines
Deal found 9/12$1,122
This Alaska Airlines deal was found by Cheapflights users on 9/12. 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.
lun. 12/156:43 pmSTS - SYD
2 stops54h 02mAlaska Airlines
dom. 1/119:40 pmSYD - STS
2 stops44h 06mAlaska Airlines
Deal found 9/12$1,126

Cheapflights Fare Finder

 
Customize your flight search to find flights from Santa Rosa to Sydney 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 septiembre 15, 2025.
Use the filters below to find and compare flights from Santa Rosa to Sydney that are best for you.

Fly from

Santa Rosa

Fly to

Sydney

Route

Depart

Return

Price

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

dom. 12/14

2:21 pm-7:45 pm

2 stops34h 24m

Sydney Kingsford Smith

mié. 1/14

9:40 pm-1:48 pm

2 stops35h 08m

$1,065

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

dom. 12/14

2:21 pm-7:45 pm

2 stops34h 24m

Sydney Kingsford Smith

jue. 1/15

9:40 pm-1:48 pm

2 stops35h 08m

$1,084

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

mar. 12/16

8:00 am-7:45 pm

2 stops40h 45m

Sydney Kingsford Smith

jue. 1/15

9:40 pm-10:46 pm

2 stops20h 06m

$1,099

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

mar. 12/16

8:00 am-7:45 pm

2 stops40h 45m

Sydney Kingsford Smith

mar. 1/13

9:40 pm-10:46 pm

2 stops20h 06m

$1,099

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

mar. 12/16

8:00 am-7:45 pm

2 stops40h 45m

Sydney Kingsford Smith

vie. 1/16

9:40 pm-10:46 pm

2 stops20h 06m

$1,117

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

dom. 12/14

8:03 pm-7:45 pm

2 stops28h 42m

Sydney Kingsford Smith

mié. 12/24

9:40 pm-9:24 am

2 stops30h 44m

$1,276

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

dom. 12/14

5:59 pm-9:00 am

1 stop20h 01m

Sydney Kingsford Smith

lun. 1/12

11:15 am-12:56 pm

1 stop20h 41m

$1,286

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

dom. 12/14

5:59 pm-9:00 am

1 stop20h 01m

Sydney Kingsford Smith

dom. 1/11

11:15 am-7:07 pm

2 stops26h 52m

$1,290

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

lun. 12/15

5:59 pm-9:00 am

1 stop20h 01m

Sydney Kingsford Smith

jue. 12/25

11:15 am-3:13 pm

1 stop22h 58m

$1,436

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

lun. 2/2

7:00 am-7:25 am

3 stops29h 25m

Sydney Kingsford Smith

mié. 2/11

5:45 pm-7:35 pm

2 stops20h 50m

$1,501

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 18 results
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Best time to book a flight from Santa Rosa to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney 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 Sydney

What is the cheapest month to book a flight from Santa Rosa to Sydney?

Currently, March is the cheapest month in which you can book a flight from Santa Rosa to Sydney (average of $1,032). Flying from Santa Rosa to Sydney in December is currently the most expensive (average of $1,627). 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 Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Santa Rosa to Sydney?

    Airlines like Alaska Airlines fly from Santa Rosa to Sydney in about 34h 24m. The time it takes to get you to your destination can typically vary by up to . There are 7430 mi between Santa Rosa and Sydney.

  • Can I find deals for flights from Santa Rosa to Sydney that include hotel bookings?

    Yes. In addition to deals on Santa Rosa to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Santa Rosa to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santa Rosa to Sydney.

  • Can I find deals for business class flights from Santa Rosa to Sydney?

    Yes. Cheapflights offers flight deals from Santa Rosa to Sydney 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 Sydney?

    Currently, March is the cheapest month in which you can book a flight from Santa Rosa to Sydney (average of $1,032). Flying from Santa Rosa to Sydney in December is currently the most expensive (average of $1,627). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly
Coogee

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