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

Return flights

05 Dec - 08 Dec	Ryanair	direct
05 Dec - 15 Dec	Ryanair	direct
01 Dec - 08 Dec	Ryanair	direct
01 Dec - 15 Dec	Ryanair	direct
19 Dec - 02 Jan	Ryanair	direct
19 Dec - 29 Dec	Ryanair	direct
29 Dec - 12 Jan	Ryanair	direct
29 Dec - 02 Jan	Eurowings	direct
11 Dec - 14 Dec	Lufthansa
04 Dec - 07 Dec	ITA Airways

Also check the deals for one-way flights from Bologna to Cologne 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 Bologna to Cologne in December from $98

Return flights