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

Return flights

31 Dec - 09 Jan	Thai AirAsia	direct
31 Dec - 31 Jan	IndiGo	direct
31 Dec - 07 Jan	IndiGo	direct
31 Dec - 08 Jan	IndiGo
31 Dec - 05 Jan	IndiGo	direct
31 Dec - 08 Jan	IndiGo	direct
30 Dec - 12 Jan	Thai AirAsia	direct
31 Dec - 01 Jan	IndiGo
30 Dec - 31 Dec	Thai AirAsia	direct
31 Dec - 04 Jan	Thai AirAsia	direct
30 Dec - 07 Jan	Thai AirAsia	direct
29 Dec - 30 Dec	IndiGo
28 Dec - 29 Dec	IndiGo
28 Dec - 31 Dec	IndiGo
28 Dec - 30 Dec	IndiGo
28 Dec - 31 Dec	Thai AirAsia	direct
29 Dec - 30 Dec	Thai AirAsia	direct
28 Dec - 29 Dec	IndiGo	direct
31 Dec - 31 Dec	Air India
28 Dec - 28 Dec	Air India

Also check the deals for one-way flights from Kolkata to Bangkok 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 Bangkok in December from 210€

Return flights