AirHint found the following cheapest return flights from Adelaide (ADL) to Singapore (SIN) in September 2025 (see full year).

Return flights

16 Sep - 20 Sep	Indonesia AirAsia
16 Sep - 21 Sep	Indonesia AirAsia
15 Sep - 30 Sep	Jetstar
17 Sep - 27 Sep	Jetstar
18 Sep - 21 Sep	Indonesia AirAsia
30 Sep - 06 Oct	Jetstar
23 Sep - 13 Oct	Jetstar
18 Sep - 04 Oct	Jetstar
18 Sep - 25 Sep	Jetstar
19 Sep - 26 Sep	Qantas
27 Sep - 11 Oct	Jetstar
21 Sep - 28 Sep	Jetstar
24 Sep - 25 Sep	Jetstar
24 Sep - 01 Oct	Jetstar
18 Sep - 02 Oct	Indonesia AirAsia
19 Sep - 25 Sep	Jetstar
24 Sep - 10 Oct	Qantas
25 Sep - 02 Oct	Jetstar
19 Sep - 05 Oct	Jetstar
22 Sep - 08 Oct	Jetstar

Also check the deals for one-way flights from Adelaide to Singapore 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 Adelaide to Singapore in September from 569€

Return flights