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

Return flights

29 Sep - 05 Oct	Batik Air Malaysia
26 Sep - 03 Oct	AirAsia
24 Sep - 06 Oct	AirAsia
24 Sep - 10 Oct	AirAsia
23 Sep - 06 Oct	AirAsia
23 Sep - 10 Oct	AirAsia
24 Sep - 05 Oct	AirAsia
23 Sep - 05 Oct	AirAsia
26 Sep - 06 Oct	AirAsia
26 Sep - 10 Oct	AirAsia
23 Sep - 24 Sep	AirAsia
24 Sep - 25 Sep	AirAsia
23 Sep - 25 Sep	AirAsia

Also check the deals for one-way flights from Sandakan 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 Sandakan to Singapore in September from 133€

Return flights