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

Return flights

17 Dec - 09 Jan	IndiGo
14 Dec - 20 Dec	AirAsia
01 Dec - 07 Dec	Singapore Airlines	direct
04 Dec - 10 Dec	AirAsia
05 Dec - 10 Dec	AirAsia
17 Dec - 24 Dec	Singapore Airlines	direct
06 Dec - 10 Dec	Thai AirAsia
24 Dec - 31 Dec	IndiGo	direct
07 Dec - 10 Dec	AirAsia
17 Dec - 09 Jan	IndiGo	direct
31 Dec - 11 Jan	AirAsia
31 Dec - 09 Jan	AirAsia
22 Dec - 11 Jan	AirAsia
22 Dec - 09 Jan	AirAsia
03 Dec - 10 Dec	Thai AirAsia
05 Dec - 10 Dec	Singapore Airlines	direct
15 Dec - 03 Jan	AirAsia
17 Dec - 03 Jan	AirAsia
19 Dec - 09 Jan	AirAsia
14 Dec - 03 Jan	AirAsia

Also check the deals for one-way flights from Kolkata 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 Kolkata to Singapore in December from $292

Return flights