AirHint found the following cheapest return flights from Singapore (SIN) to Colombo (CMB) in September 2026 (see full year).

Return flights

22 Sep - 29 Sep	AirAsia
15 Sep - 07 Oct	IndiGo
06 Sep - 12 Sep	Air India
18 Sep - 25 Sep	Air India
01 Sep - 13 Sep	Air India
03 Sep - 09 Sep	Air India
02 Sep - 07 Sep	Air India
07 Sep - 19 Sep	Air India
07 Sep - 18 Sep	Air India
03 Sep - 16 Sep	Air India
10 Sep - 18 Sep	Air India
15 Sep - 07 Oct	Singapore Airlines	direct

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

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 September from $260

Return flights