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

Return flights

05 Dec - 30 Dec	AirAsia
26 Dec - 28 Dec	AirAsia
23 Dec - 25 Dec	Air India
06 Dec - 12 Dec	Air India
04 Dec - 11 Dec	Air India
25 Dec - 04 Jan	Air India
23 Dec - 30 Dec	Air India
11 Dec - 18 Dec	Air India
24 Dec - 31 Dec	Air India
01 Dec - 10 Dec	Air India
07 Dec - 13 Dec	Air India
25 Dec - 04 Jan	Singapore Airlines	direct
17 Dec - 04 Jan	AirAsia
23 Dec - 12 Jan	AirAsia
24 Dec - 12 Jan	AirAsia
23 Dec - 09 Jan	AirAsia
24 Dec - 09 Jan	AirAsia
24 Dec - 04 Jan	AirAsia
17 Dec - 07 Jan	AirAsia
20 Dec - 09 Jan	AirAsia

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

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 December from 274€

Return flights