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

Return flights

05 Dec - 09 Dec	Jetstar
01 Dec - 15 Dec	Indonesia AirAsia
01 Dec - 17 Dec	Indonesia AirAsia
01 Dec - 12 Dec	Indonesia AirAsia
01 Dec - 07 Dec	Indonesia AirAsia
01 Dec - 21 Dec	Indonesia AirAsia
10 Dec - 17 Dec	Jetstar
07 Dec - 12 Dec	Jetstar
11 Dec - 18 Dec	Jetstar
01 Dec - 19 Dec	Indonesia AirAsia
05 Dec - 11 Jan	Jetstar
10 Dec - 10 Jan	Jetstar
30 Dec - 19 Jan	Indonesia AirAsia
30 Dec - 09 Jan	Indonesia AirAsia
12 Dec - 12 Jan	Jetstar
30 Dec - 07 Jan	Indonesia AirAsia
30 Dec - 11 Jan	Indonesia AirAsia
26 Dec - 01 Jan	Jetstar
17 Dec - 07 Jan	Jetstar
30 Dec - 04 Jan	Indonesia AirAsia

Also check the deals for one-way flights from Adelaide to Singapore in December.

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 December from 363€

Return flights