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

Return flights

24 Dec - 29 Dec	Jetstar
25 Dec - 28 Dec	Indonesia AirAsia
24 Dec - 28 Dec	Jetstar
24 Dec - 27 Dec	Jetstar
24 Dec - 30 Dec	Jetstar
22 Dec - 29 Dec	Jetstar
22 Dec - 27 Dec	Jetstar
23 Dec - 02 Jan	Indonesia AirAsia
26 Dec - 31 Dec	Jetstar
22 Dec - 26 Dec	Jetstar
26 Dec - 30 Dec	Jetstar
29 Dec - 29 Jan	Jetstar
25 Dec - 01 Jan	Indonesia AirAsia
29 Dec - 03 Jan	Indonesia AirAsia
29 Dec - 02 Jan	Jetstar
23 Dec - 07 Jan	Jetstar
24 Dec - 05 Jan	Jetstar
28 Dec - 04 Jan	Jetstar
28 Dec - 03 Jan	Jetstar
30 Dec - 05 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 616€

Return flights