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

Return flights

19 Sep - 29 Sep	AirAsia
24 Sep - 30 Sep	AirAsia
29 Sep - 03 Oct	AirAsia
27 Sep - 04 Oct	AirAsia
23 Sep - 28 Sep	AirAsia
26 Sep - 05 Oct	AirAsia
24 Sep - 28 Sep	AirAsia
22 Sep - 26 Sep	AirAsia
30 Sep - 10 Oct	AirAsia
23 Sep - 30 Sep	AirAsia
20 Sep - 27 Sep	AirAsia
18 Sep - 22 Sep	AirAsia
25 Sep - 09 Oct	AirAsia
30 Sep - 30 Sep	IndiGo
25 Sep - 30 Sep	AirAsia
20 Sep - 03 Oct	AirAsia
23 Sep - 10 Oct	AirAsia
26 Sep - 10 Oct	AirAsia
30 Sep - 21 Oct	AirAsia
23 Sep - 02 Oct	AirAsia

Also check the deals for one-way flights from Colombo 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 Colombo to Singapore in September from 206€

Return flights