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

Return flights

31 Aug - 30 Sep	AirAsia
31 Aug - 03 Sep	AirAsia
29 Aug - 29 Sep	IndiGo
22 Aug - 21 Sep	IndiGo
29 Aug - 09 Sep	IndiGo
22 Aug - 26 Aug	IndiGo
27 Aug - 29 Aug	AirAsia
22 Aug - 24 Aug	IndiGo
22 Aug - 27 Aug	Air India
21 Aug - 28 Aug	IndiGo
27 Aug - 30 Aug	AirAsia
20 Aug - 27 Aug	AirAsia
24 Aug - 26 Aug	AirAsia
22 Aug - 29 Aug	IndiGo
25 Aug - 29 Aug	IndiGo
23 Aug - 27 Sep	IndiGo
31 Aug - 02 Sep	IndiGo
28 Aug - 01 Sep	AirAsia
30 Aug - 30 Sep	IndiGo
27 Aug - 14 Sep	Air India

Also check the deals for one-way flights from Colombo 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 Colombo to Singapore in August from 224€

Return flights