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

Return flights

16 Sep - 21 Sep	Scoot
11 Sep - 22 Sep	Scoot
11 Sep - 15 Sep	Scoot
05 Sep - 17 Sep	Scoot
11 Sep - 16 Sep	Scoot
04 Sep - 11 Sep	Scoot
12 Sep - 14 Sep	Scoot
04 Sep - 09 Sep	Scoot
02 Sep - 09 Sep	Scoot
13 Sep - 21 Sep	Scoot
18 Sep - 13 Oct	Qantas	direct
24 Sep - 13 Oct	Qantas	direct
18 Sep - 06 Oct	Qantas	direct
16 Sep - 06 Oct	Qantas	direct
15 Sep - 06 Oct	Qantas	direct
29 Sep - 08 Oct	Qantas	direct
22 Sep - 04 Oct	Qantas	direct
20 Sep - 04 Oct	Qantas	direct
20 Sep - 03 Oct	Qantas	direct
25 Sep - 15 Oct	AirAsia X

Also check the deals for one-way flights from Sydney to Jakarta 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 Sydney to Jakarta in September from $303

Return flights