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$1,106+ Cheap flights from Santa Rosa (STS) to Sydney (SYD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SYD
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap 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 February 4, 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.
Tue 3/107:00 am
STS
-
SYD
1 stop30h 25m
Multiple Airlines
Wed 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.
Tue 10/137:23 pm
STS
-
SYD
2 stops29h 27m
Multiple Airlines
Sat 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 2/2. 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.
Tue 3/1012:56 pm
STS
-
SYD
2 stops26h 04m
American Airlines
Wed 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.
Fri 12/117:23 pm
STS
-
SYD
2 stops29h 22m
Multiple Airlines
Mon 12/289:40 pm
SYD
-
STS
2 stops21h 05m
Multiple Airlines
Deal found 2/1$1,464
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.
Mon 10/127:23 pm
STS
-
SYD
1 stop18h 42m
Alaska Airlines
Thu 10/2911:15 am
SYD
-
STS
1 stop17h 52m
Alaska Airlines
Deal found 2/2$1,483
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.
Tue 10/1312:15 pm
STS
-
SYD
2 stops25h 50m
American Airlines
Mon 10/2611:15 am
SYD
-
STS
2 stops42h 46m
American Airlines
Deal found 2/2$1,487
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.
Tue 10/133:05 pm
STS
-
SYD
1 stop23h 00m
American Airlines
Sat 10/3111:15 am
SYD
-
STS
1 stop30h 30m
American Airlines
Deal found 2/2$1,489
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.
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 2/2$1,490
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.
Tue 10/134:20 pm
STS
-
SYD
2 stops21h 45m
American Airlines
Fri 10/3011:15 am
SYD
-
STS
1 stop30h 30m
American Airlines
Deal found 2/2$1,494
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.
Mon 10/123:05 pm
STS
-
SYD
1 stop23h 00m
American Airlines
Mon 10/2611:15 am
SYD
-
STS
2 stops42h 46m
American Airlines
Deal found 2/2$1,497
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.
Tue 10/133:05 pm
STS
-
SYD
1 stop23h 00m
American Airlines
Sun 10/2511:15 am
SYD
-
STS
1 stop30h 30m
American Airlines
Deal found 2/2$1,499

Find 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 February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,106
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,054
Provider with most accurate pricing for Santa Rosa Sonoma County-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Santa Rosa Sonoma County-Sydney Kingsford Smith flights.
Search Deals
From Santa Rosa Sonoma County to Sydney Kingsford Smith
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 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 February 4, 2026.
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

Tue 3/10

7:00 am-7:25 am

1 stop30h 25m

Sydney Kingsford Smith

Wed 3/18

5:45 pm-7:13 pm

1 stop19h 28m

$1,341

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Tue 3/10

12:56 pm-9:00 am

2 stops26h 04m

Sydney Kingsford Smith

Wed 3/18

11:20 am-3:53 pm

2 stops22h 33m

$1,397

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Sat 2/28

1:03 pm-9:00 am

2 stops24h 57m

Sydney Kingsford Smith

Sat 3/7

11:20 am-10:11 am

1 stop17h 51m

$1,600

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 3/18

7:53 pm-9:00 am

1 stop19h 07m

Sydney Kingsford Smith

Tue 4/7

9:10 am-7:13 pm

1 stop27h 03m

$1,632

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 3/18

7:53 pm-9:00 am

1 stop19h 07m

Sydney Kingsford Smith

Wed 4/8

9:10 am-7:13 pm

1 stop27h 03m

$1,632

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 3/18

12:56 pm-9:00 am

2 stops26h 04m

Sydney Kingsford Smith

Wed 4/8

9:10 am-7:13 pm

1 stop27h 03m

$1,636

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 3/18

12:56 pm-9:00 am

2 stops26h 04m

Sydney Kingsford Smith

Tue 4/7

9:10 am-7:13 pm

1 stop27h 03m

$1,636

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

$1,853

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 3/18

7:53 pm-1:25 pm

2 stops23h 32m

$1,201

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

  • Most accurate provider: When it comes to deals on Santa Rosa-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Santa Rosa-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Santa Rosa-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Santa Rosa-Sydney flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Santa Rosa-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, August is the cheapest month in which you can book a flight from Santa Rosa to Sydney (average of $499). Flying from Santa Rosa to Sydney 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 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 American Airlines and Alaska Airlines fly from Santa Rosa to Sydney in about 19h 07m. The time it takes to get you to your destination can typically vary by up to 6h 57m. There are 7430 mi between Santa Rosa and Sydney. This flight may include one or multiple stops.

  • 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, August is the cheapest month in which you can book a flight from Santa Rosa to Sydney (average of $499). Flying from Santa Rosa to Sydney 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

Traveling to a place near Sydney?

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

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