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Cheap flights from Santa Rosa to Sydney from $678

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Santa Rosa to Sydney departing on 11/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
8:03 pm - 7:45 pmSTS-SYD
29h 42m2 stops
Alaska Airlines Logo
9:40 pm - 11:57 pmSYD-STS
21h 17m2 stops
$1,164Alaska Airlines
Find Deal
Thu, Oct 30 - Sat, Nov 8
Alaska Airlines Logo
2:22 pm - 7:45 pmSTS-SYD
35h 23m2 stops
Alaska Airlines Logo
9:40 pm - 7:27 pmSYD-STS
40h 47m2 stops
$1,178Alaska Airlines
Find Deal
Wed, Oct 29 - Sun, Nov 9
Alaska Airlines Logo
7:00 am - 7:45 pmSTS-SYD
42h 45m2 stops
Alaska Airlines Logo
9:40 pm - 1:26 pmSYD-STS
34h 46m2 stops
$1,186Alaska Airlines
Find Deal
Fri, Oct 31 - Sun, Nov 9
Alaska Airlines Logo
8:03 pm - 7:45 pmSTS-SYD
53h 42m2 stops
Alaska Airlines Logo
9:40 pm - 1:26 pmSYD-STS
34h 46m2 stops
$1,188Alaska Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
Hawaiian Airlines Logo
7:46 pm - 7:45 pmSTS-SYD
29h 59m3 stops
Hawaiian Airlines Logo
9:40 pm - 8:44 amSYD-STS
30h 04m2 stops
$1,447Hawaiian Airlines
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Fri, Oct 31 - Sun, Nov 9
Multiple Airlines Logo
12:49 pm - 7:25 amSTS-SYD
23h 36m2 stops
Multiple Airlines Logo
9:25 pm - 10:35 pmSYD-STS
20h 10m2 stops
$1,550Multiple Airlines
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Fri, Feb 13 - Sun, Feb 22
Multiple Airlines Logo
12:55 pm - 9:20 amSTS-SYD
25h 25m3 stops
Multiple Airlines Logo
5:45 pm - 10:32 pmSYD-STS
23h 47m2 stops
$1,736Multiple Airlines
Find Deal
Wed, Jan 14 - Sun, Jan 25
Qantas Airways Logo
7:00 am - 9:20 amSTS-SYD
31h 20m2 stops
Qantas Airways Logo
5:45 pm - 10:58 pmSYD-STS
24h 13m1 stop
$1,796Qantas Airways
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Wed, Jan 14 - Sun, Jan 25
Qantas Airways Logo
5:59 pm - 7:25 amSTS-SYD
18h 26m1 stop
Qantas Airways Logo
8:45 am - 3:13 pmSYD-STS
25h 28m2 stops
$2,059Qantas Airways
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Tue, Dec 9 - Wed, Dec 24
American Airlines Logo
12:37 pm - 9:00 amSTS-SYD
25h 23m2 stops
American Airlines Logo
11:20 am - 10:10 amSYD-STS
17h 50m1 stop
$2,150American Airlines
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Fri, Nov 7 - Tue, Nov 11

Alaska Airlines flights from Santa Rosa to Sydney

Our best Alaska Airlines deals on Santa Rosa to Sydney flight tickets
Alaska Airlines
Oct 30
STS8:03 pmSanta Rosa Sonoma County
29h 42m
2 stops
SYD7:45 pmSydney Kingsford Smith
Nov 8
SYD9:40 pmSydney Kingsford Smith
21h 17m
2 stops
STS11:57 pmSanta Rosa Sonoma County
$1,164
Find similar
Alaska Airlines
Oct 29
STS2:22 pmSanta Rosa Sonoma County
35h 23m
2 stops
SYD7:45 pmSydney Kingsford Smith
Nov 9
SYD9:40 pmSydney Kingsford Smith
40h 47m
2 stops
STS7:27 pmSanta Rosa Sonoma County
$1,178
Find similar
Alaska Airlines
Oct 31
STS7:00 amSanta Rosa Sonoma County
42h 45m
2 stops
SYD7:45 pmSydney Kingsford Smith
Nov 9
SYD9:40 pmSydney Kingsford Smith
34h 46m
2 stops
STS1:26 pmSanta Rosa Sonoma County
$1,186
Find similar

Qantas Airways flights from Santa Rosa to Sydney

Our best Qantas Airways deals on Santa Rosa to Sydney flight tickets
Qantas Airways
Jan 14
STS7:00 amSanta Rosa Sonoma County
31h 20m
2 stops
SYD9:20 amSydney Kingsford Smith
Jan 25
SYD5:45 pmSydney Kingsford Smith
24h 13m
1 stop
STS10:58 pmSanta Rosa Sonoma County
$1,796
Find similar
Qantas Airways
Dec 9
STS5:59 pmSanta Rosa Sonoma County
18h 26m
1 stop
SYD7:25 amSydney Kingsford Smith
Dec 24
SYD8:45 amSydney Kingsford Smith
25h 28m
2 stops
STS3:13 pmSanta Rosa Sonoma County
$2,059
Find similar
Qantas Airways
Jan 15
STS7:00 amSanta Rosa Sonoma County
29h 25m
1 stop
SYD7:25 amSydney Kingsford Smith
Jan 25
SYD5:45 pmSydney Kingsford Smith
24h 13m
1 stop
STS10:58 pmSanta Rosa Sonoma County
$2,082
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from Santa Rosa to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Thu 10/30

8:03 pm-7:45 pm

2 stops29h 42m

Sydney Kingsford Smith

Sat 11/8

9:40 pm-11:57 pm

2 stops21h 17m

$1,164

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 10/29

2:22 pm-7:45 pm

2 stops35h 23m

Sydney Kingsford Smith

Sun 11/9

9:40 pm-7:27 pm

2 stops40h 47m

$1,178

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Fri 10/31

7:00 am-7:45 pm

2 stops42h 45m

Sydney Kingsford Smith

Sun 11/9

9:40 pm-1:26 pm

2 stops34h 46m

$1,186

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Sat 11/1

8:03 pm-7:45 pm

2 stops53h 42m

Sydney Kingsford Smith

Sat 11/8

9:40 pm-1:26 pm

2 stops34h 46m

$1,188

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Fri 10/31

7:46 pm-7:45 pm

3 stops29h 59m

Sydney Kingsford Smith

Sun 11/9

9:40 pm-8:44 am

2 stops30h 04m

$1,447

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Fri 2/13

12:49 pm-7:25 am

2 stops23h 36m

Sydney Kingsford Smith

Sun 2/22

9:25 pm-10:35 pm

2 stops20h 10m

$1,550

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 1/14

12:55 pm-9:20 am

3 stops25h 25m

Sydney Kingsford Smith

Sun 1/25

5:45 pm-10:32 pm

2 stops23h 47m

$1,736

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Wed 1/14

7:00 am-9:20 am

2 stops31h 20m

Sydney Kingsford Smith

Sun 1/25

5:45 pm-10:58 pm

1 stop24h 13m

$1,796

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Tue 12/9

5:59 pm-7:25 am

1 stop18h 26m

Sydney Kingsford Smith

Wed 12/24

8:45 am-3:13 pm

2 stops25h 28m

$2,059

Santa RosaSydney

STS - SYD

STSSYD

Santa Rosa Sonoma County

Fri 11/7

12:37 pm-9:00 am

2 stops25h 23m

Sydney Kingsford Smith

Tue 11/11

11:20 am-10:10 am

1 stop17h 50m

$2,150

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Santa Rosa to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Santa Rosa to Sydney is on a Monday when prices can be found for as low as $1,250. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $1,486.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is in the afternoon. momondo users have found flights departing from Santa Rosa to Sydney in the afternoon for as low as $1,084. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly at noon, with an average ticket price of $1,325. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Santa Rosa to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Santa Rosa to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Santa Rosa to Sydney (STS to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Santa Rosa to Sydney

Direct flights

None
There are no direct flights from Santa Rosa to Sydney. There are no popular flight routes from Santa Rosa to Sydney.
Search flight deals

  • How far is Santa Rosa Sonoma County to Sydney Kingsford Smith by plane?

    The distance between Santa Rosa Sonoma County and Sydney Kingsford Smith is about 7428.0 mi. Flights usually cover this in 18h 04m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Santa Rosa Sonoma County Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Santa Rosa Sonoma County Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Santa Rosa Sonoma County Airport to Sydney Kingsford Smith Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Santa Rosa Sonoma County Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Bondi Beach
Katoomba
Wollongong
Randwick
Cronulla
Coogee
Manly
Penrith
Leura
Lithgow
Charlestown
Terrigal
Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Santa Rosa to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Santa Rosa to Sydney for you.

Can I find flights from Santa Rosa to Sydney with flexible booking policies on momondo?

Flights from Santa Rosa to Sydney with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Santa Rosa to Sydney?

Once all potential Santa Rosa to Sydney flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Santa Rosa to Sydney right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Sydney from Santa Rosa. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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