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

Return flights

20 Aug - 27 Aug	AirAsia
29 Aug - 14 Sep	IndiGo
28 Aug - 14 Sep	IndiGo
11 Aug - 22 Aug	AirAsia
18 Aug - 21 Aug	AirAsia
19 Aug - 22 Aug	AirAsia
14 Aug - 15 Aug	Air India
27 Aug - 10 Sep	IndiGo
15 Aug - 18 Aug	Scoot Tigerair
20 Aug - 29 Aug	IndiGo
15 Aug - 15 Aug	Scoot Tigerair
21 Aug - 21 Aug	Scoot Tigerair
20 Aug - 26 Aug	IndiGo
21 Aug - 18 Sep	Air India
14 Aug - 12 Sep	Air India
27 Aug - 02 Sep	Air India
27 Aug - 03 Sep	Air India
27 Aug - 01 Sep	Air India
29 Aug - 03 Sep	Air India
05 Aug - 10 Sep	Air India

Also check the deals for one-way flights from Singapore to Colombo 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.

Book a cheap hotel in Colombo

Cheap car rent in Colombo

Cheapest return flights from Singapore to Colombo in August from $261

Return flights