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

Return flights

18 Sep - 25 Sep	AirAsia
03 Sep - 06 Sep	AirAsia
03 Sep - 07 Sep	AirAsia
19 Sep - 21 Sep	AirAsia
29 Sep - 07 Oct	AirAsia
03 Sep - 12 Sep	AirAsia
29 Sep - 12 Oct	IndiGo
19 Sep - 26 Sep	IndiGo
15 Sep - 18 Sep	IndiGo
17 Sep - 24 Sep	IndiGo
05 Sep - 09 Sep	IndiGo
09 Sep - 18 Sep	AirAsia
28 Sep - 05 Oct	AirAsia
14 Sep - 06 Oct	IndiGo
25 Sep - 12 Oct	AirAsia
25 Sep - 11 Oct	AirAsia
25 Sep - 06 Oct	AirAsia
29 Sep - 12 Oct	Singapore Airlines	direct
30 Sep - 12 Oct	AirAsia
30 Sep - 11 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 216€

Return flights