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

Return flights

15 Dec - 18 Dec	Ryanair
15 Dec - 20 Dec	Ryanair
01 Dec - 04 Dec	Ryanair
11 Dec - 18 Dec	Ryanair
14 Dec - 17 Dec	Lufthansa
16 Dec - 23 Dec	Lufthansa
12 Dec - 15 Dec	Ryanair
24 Dec - 26 Dec	Eurowings
03 Dec - 06 Dec	Lufthansa
04 Dec - 06 Dec	Lufthansa
30 Dec - 07 Jan	Lufthansa
17 Dec - 04 Jan	Lufthansa
31 Dec - 04 Jan	Lufthansa
29 Dec - 02 Jan	Lufthansa
30 Dec - 02 Jan	Lufthansa
27 Dec - 02 Jan	Lufthansa
28 Dec - 02 Jan	Austrian Airlines
31 Dec - 03 Jan	Lufthansa
31 Dec - 01 Jan	Ryanair
24 Dec - 02 Jan	SWISS

Also check the deals for one-way flights from Cologne to Prague 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 Prague in December from 139€

Return flights