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

Return flights

01 Dec - 13 Dec	Air China
01 Dec - 21 Dec	Air China
04 Dec - 31 Dec	Air China
07 Dec - 22 Dec	IndiGo
03 Dec - 24 Dec	IndiGo
02 Dec - 21 Dec	Air China
02 Dec - 18 Dec	Air China
01 Dec - 15 Jan	Air China
02 Dec - 17 Dec	Air China
01 Dec - 15 Dec	Air China
08 Dec - 23 Dec	Pegasus Airlines
01 Dec - 01 Jan	Air China
30 Dec - 14 Jan	Vietnam Airlines
30 Dec - 21 Jan	Vietnam Airlines
31 Dec - 28 Jan	Vietnam Airlines
31 Dec - 14 Jan	Vietnam Airlines
31 Dec - 16 Jan	Ryanair
30 Dec - 18 Jan	Pegasus Airlines
29 Dec - 28 Jan	Vietnam Airlines
28 Dec - 26 Jan	IndiGo

Also check the deals for one-way flights from Copenhagen 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 Copenhagen to Bangkok in December from 478€

Return flights