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

Return flights

04 Aug - 07 Aug	AirAsia
03 Aug - 07 Aug	AirAsia
24 Aug - 31 Aug	AirAsia
25 Aug - 01 Sep	AirAsia
27 Aug - 25 Sep	AirAsia
10 Aug - 31 Aug	IndiGo
30 Aug - 01 Sep	Air India
11 Aug - 13 Aug	Air India
21 Aug - 23 Aug	Air India
01 Aug - 03 Aug	Air India
12 Aug - 14 Aug	Air India
02 Aug - 04 Aug	Air India
03 Aug - 05 Aug	Air India
19 Aug - 01 Sep	IndiGo
18 Aug - 01 Sep	IndiGo
28 Aug - 18 Sep	AirAsia
17 Aug - 07 Sep	AirAsia
17 Aug - 02 Sep	AirAsia
30 Aug - 19 Sep	AirAsia
17 Aug - 03 Sep	AirAsia

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.

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Cheapest return flights from Singapore to Colombo in August from 214€

Return flights