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

Return flights

02 Sep - 13 Sep	AirAsia
08 Sep - 15 Sep	AirAsia
01 Sep - 08 Sep	AirAsia
15 Sep - 15 Oct	AirAsia
12 Sep - 23 Sep	AirAsia
09 Sep - 16 Sep	AirAsia
14 Sep - 16 Sep	IndiGo
10 Sep - 17 Sep	IndiGo
15 Sep - 19 Sep	IndiGo
04 Sep - 10 Sep	IndiGo
17 Sep - 25 Sep	IndiGo
26 Sep - 06 Oct	Air India
19 Sep - 09 Oct	AirAsia
22 Sep - 09 Oct	AirAsia
06 Sep - 06 Oct	Air India
25 Sep - 09 Oct	AirAsia
22 Sep - 12 Oct	AirAsia
19 Sep - 01 Oct	AirAsia
19 Sep - 02 Oct	AirAsia
22 Sep - 01 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 211€

Return flights