AirHint found the following cheapest return flights from Santa Ana (SNA) to Sydney (SYD) in September 2025 (see full year).

Return flights

01 Sep - 30 Sep	Air New Zealand
09 Sep - 22 Sep	Air New Zealand
01 Sep - 08 Sep	Air New Zealand
23 Sep - 30 Sep	Air New Zealand
09 Sep - 27 Sep	Air New Zealand
12 Sep - 22 Sep	Air New Zealand
13 Sep - 23 Sep	Air New Zealand
04 Sep - 21 Sep	Air New Zealand
04 Sep - 16 Sep	Air New Zealand
06 Sep - 16 Sep	Air New Zealand
26 Sep - 24 Oct	Air New Zealand
28 Sep - 14 Oct	Air New Zealand
12 Sep - 19 Oct	Air New Zealand
24 Sep - 08 Oct	Japan Airlines

Also check the deals for one-way flights from Santa Ana to Sydney in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Santa Ana to Sydney in September from $1403

Return flights