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

Return flights

03 Aug - 10 Aug	IndiGo
08 Aug - 11 Aug	IndiGo
05 Aug - 09 Aug	IndiGo
06 Aug - 10 Aug	FitsAir
01 Aug - 06 Aug	IndiGo
02 Aug - 07 Aug	IndiGo
07 Aug - 11 Aug	IndiGo
21 Aug - 25 Aug	IndiGo
18 Aug - 22 Aug	IndiGo
13 Aug - 15 Aug	IndiGo
19 Aug - 01 Sep	IndiGo
14 Aug - 11 Sep	AirAsia
25 Aug - 11 Sep	AirAsia
27 Aug - 11 Sep	AirAsia
21 Aug - 11 Sep	AirAsia
22 Aug - 11 Sep	AirAsia
24 Aug - 11 Sep	AirAsia
31 Aug - 11 Sep	AirAsia
25 Aug - 15 Sep	AirAsia
27 Aug - 15 Sep	AirAsia

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 $252

Return flights