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

Return flights

27 Dec - 10 Jan	Ryanair	direct
27 Dec - 15 Jan	Ryanair	direct
28 Dec - 03 Jan	Eurowings	direct
27 Dec - 12 Jan	Ryanair	direct
27 Dec - 08 Jan	Ryanair	direct
27 Dec - 03 Jan	Ryanair	direct
28 Dec - 01 Jan	Eurowings	direct
28 Dec - 04 Jan	Eurowings	direct
28 Dec - 02 Jan	Eurowings	direct
29 Dec - 03 Jan	Eurowings	direct
28 Dec - 31 Dec	Eurowings
27 Dec - 30 Dec	Ryanair	direct
28 Dec - 31 Dec	Eurowings	direct
27 Dec - 28 Dec	Ryanair
27 Dec - 27 Dec	Ryanair
27 Dec - 28 Dec	Ryanair	direct

Also check the deals for one-way flights from Rome 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 Rome to Cologne in December from 118€

Return flights