AirHint found the following cheapest return flights from Cairns (CNS) to Singapore (SIN) in August 2025 (see full year).

Return flights

10 Aug - 17 Aug	Jetstar
04 Aug - 11 Aug	Jetstar
04 Aug - 10 Aug	Jetstar
03 Aug - 10 Aug	Jetstar
02 Aug - 09 Aug	Jetstar
07 Aug - 20 Aug	Indonesia AirAsia
07 Aug - 27 Aug	Indonesia AirAsia
07 Aug - 17 Aug	Indonesia AirAsia
07 Aug - 22 Aug	Indonesia AirAsia
07 Aug - 13 Aug	Indonesia AirAsia
14 Aug - 03 Sep	Indonesia AirAsia

Also check the deals for one-way flights from Cairns to Singapore in August.

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 Cairns to Singapore in August from $451

Return flights