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$1,235+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
STS — SYD
jul. 23 — jul. 301
mié. 7/23
mié. 7/30
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 julio 18, 2025.

Round-trip from

$1,235
(Alaska Airlines)

Popular in

December

Cheapest in

February

Average price

$1,151
From Santa Rosa Sonoma County to Sydney Kingsford Smith
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Highest demand for flights based on searches. 12% potential increase in price ($168 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 18, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/15. 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.
sáb. 8/97:23 pmSTS - SYD
1 stop18h 42mAlaska Airlines
mié. 8/139:10 amSYD - STS
1 stop25h 57mAlaska Airlines
Deal found 7/15$1,235
This American Airlines deal was found by Cheapflights users on 7/15. 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.
sáb. 8/93:05 pmSTS - SYD
1 stop23h 00mAmerican Airlines
mié. 8/139:10 amSYD - STS
2 stops23h 37mAmerican Airlines
Deal found 7/15$1,239
This Qantas Airways deal was found by Cheapflights users on 7/16. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/206:34 pmSTS - SYD
2 stops23h 51mQantas Airways
lun. 12/18:45 amSYD - STS
2 stops23h 11mQantas Airways
Deal found 7/16$1,790
This Qantas Airways deal was found by Cheapflights users on 7/17. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/145:34 pmSTS - SYD
2 stops22h 46mMultiple Airlines
lun. 11/35:45 pmSYD - STS
1 stop19h 09mMultiple Airlines
Deal found 7/17$2,381
This Qatar Airways deal was found by Cheapflights users on 7/17. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/147:05 amSTS - SYD
2 stops41h 05mQatar Airways
lun. 11/33:50 pmSYD - STS
2 stops49h 15mQatar Airways
Deal found 7/17$2,739

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 julio 18, 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

sáb. 8/9

7:23 pm-7:05 am

1 stop18h 42m

Sydney Kingsford Smith

mié. 8/13

9:10 am-6:07 pm

1 stop25h 57m

$1,235

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

sáb. 8/9

3:05 pm-7:05 am

1 stop23h 00m

Sydney Kingsford Smith

mié. 8/13

9:10 am-3:47 pm

2 stops23h 37m

$1,239

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

jue. 11/20

6:34 pm-1:25 pm

2 stops23h 51m

Sydney Kingsford Smith

lun. 12/1

8:45 am-12:56 pm

2 stops23h 11m

$1,790

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

mar. 10/14

5:34 pm-10:20 am

2 stops22h 46m

Sydney Kingsford Smith

lun. 11/3

5:45 pm-5:54 pm

1 stop19h 09m

$2,381

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

mar. 10/14

7:05 am-6:10 pm

2 stops41h 05m

Sydney Kingsford Smith

lun. 11/3

3:50 pm-10:05 pm

2 stops49h 15m

$2,739

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

mié. 12/17

1:30 pm-7:25 am

1 stop22h 55m

$1,453

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

mié. 12/17

1:30 pm-1:55 pm

3 stops29h 25m

$1,566

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

mié. 12/17

8:00 am-6:50 am

2 stops51h 50m

$2,401

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/17

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, February is the cheapest month in which you can book a flight from Santa Rosa to Sydney (average of $1,034). Flying from Santa Rosa to Sydney in December is currently the most expensive (average of $1,623). 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.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated julio 18, 2025.
Read through reviews of airlines operating flights from Santa Rosa to Sydney, such as Alaska Airlines, Qantas Airways, and Qatar Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Qantas Airways
7.5
Good
879 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Qatar Airways
7.4
Good
3,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • 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, February is the cheapest month in which you can book a flight from Santa Rosa to Sydney (average of $1,034). Flying from Santa Rosa to Sydney in December is currently the most expensive (average of $1,623). 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
Wollongong
Parramatta
Manly
Coogee

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