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

Return flights

02 Dec - 09 Dec	Jetstar
02 Dec - 11 Dec	Jetstar
01 Dec - 11 Dec	Jetstar
01 Dec - 09 Dec	Jetstar
01 Dec - 12 Dec	Jetstar
01 Dec - 05 Dec	Jetstar
01 Dec - 15 Dec	Jetstar
02 Dec - 16 Dec	Jetstar
04 Dec - 25 Dec	Jetstar
04 Dec - 07 Dec	Jetstar
01 Dec - 01 Jan	Scoot	direct
30 Dec - 02 Jan	Xiamen Airlines
11 Dec - 21 Jan	Jetstar
10 Dec - 26 Jan	Jetstar
15 Dec - 24 Jan	Jetstar
10 Dec - 09 Jan	Jetstar
09 Dec - 18 Jan	Jetstar
04 Dec - 08 Jan	Jetstar
17 Dec - 09 Jan	Jetstar
10 Dec - 12 Jan	Jetstar

Also check the deals for one-way flights from Sydney 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 Sydney to Singapore in December from 356€

Return flights