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

Return flights

24 Aug - 27 Aug	AirAsia
22 Aug - 24 Aug	AirAsia
22 Aug - 26 Aug	IndiGo
22 Aug - 23 Aug	IndiGo
20 Aug - 24 Aug	AirAsia
13 Aug - 20 Aug	AirAsia
01 Aug - 08 Aug	AirAsia
30 Aug - 03 Sep	AirAsia
08 Aug - 15 Aug	Air India
09 Aug - 12 Aug	AirAsia
07 Aug - 14 Aug	IndiGo
23 Aug - 01 Sep	IndiGo
25 Aug - 05 Sep	IndiGo
29 Aug - 15 Sep	IndiGo
25 Aug - 01 Sep	IndiGo
05 Aug - 25 Sep	IndiGo
30 Aug - 01 Sep	AirAsia
31 Aug - 30 Sep	IndiGo
26 Aug - 02 Sep	Air India
19 Aug - 08 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 222€

Return flights