AirHint found the following cheapest return flights from Cologne (CGN) to Bangkok (DMK) in December 2025 (see full year).

Return flights

12 Dec - 16 Dec	Pegasus Airlines
01 Dec - 08 Dec	Pegasus Airlines
12 Dec - 22 Dec	Pegasus Airlines
17 Dec - 17 Jan	AJet
28 Dec - 15 Jan	AJet
22 Dec - 19 Jan	Pegasus Airlines
24 Dec - 06 Jan	AJet
22 Dec - 04 Jan	AJet

Also check the deals for one-way flights from Cologne 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 Cologne to Bangkok in December from 617€

Return flights