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

Return flights

08 Dec - 15 Dec	Pegasus Airlines
06 Dec - 18 Dec	AJet
27 Dec - 13 Jan	Pegasus Airlines
06 Dec - 13 Dec	Pegasus Airlines
12 Dec - 25 Dec	Ryanair
30 Dec - 21 Jan	Pegasus Airlines
31 Dec - 16 Jan	Pegasus Airlines
28 Dec - 10 Jan	Pegasus Airlines
28 Dec - 17 Jan	Pegasus Airlines
29 Dec - 11 Jan	AJet
06 Dec - 22 Dec	Pegasus Airlines
29 Dec - 10 Jan	AJet
28 Dec - 11 Jan	Pegasus Airlines
15 Dec - 15 Jan	Pegasus Airlines
12 Dec - 23 Dec	Ryanair
27 Dec - 11 Jan	Pegasus Airlines
11 Dec - 22 Dec	Eurowings
07 Dec - 23 Dec	Pegasus Airlines
05 Dec - 07 Dec	Pegasus Airlines
04 Dec - 07 Dec	Eurowings

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 $744

Return flights