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

Return flights

12 Sep - 15 Sep	Eurowings	direct
11 Sep - 15 Sep	Wizz Air Malta
03 Sep - 15 Sep	Wizz Air Malta
11 Sep - 15 Sep	Eurowings	direct
17 Sep - 24 Sep	Vueling Airlines
12 Sep - 14 Sep	Eurowings	direct
26 Sep - 29 Sep	Eurowings
18 Sep - 24 Sep	Wizz Air Malta
26 Sep - 29 Sep	Eurowings	direct
26 Sep - 28 Sep	Eurowings	direct
29 Sep - 06 Oct	Ryanair
29 Sep - 06 Oct	Eurowings	direct

Also check the deals for one-way flights from Rome to Cologne in September.

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 September from $128

Return flights