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

Return flights

02 Sep - 22 Sep	Eurowings	direct
26 Sep - 30 Sep	Eurowings	direct
22 Sep - 29 Sep	Eurowings	direct
22 Sep - 24 Sep	Eurowings	direct
30 Sep - 07 Oct	Eurowings	direct
18 Sep - 22 Sep	Eurowings	direct
23 Sep - 25 Sep	Eurowings	direct
19 Sep - 22 Sep	Eurowings	direct
11 Sep - 14 Sep	Lufthansa	direct
09 Sep - 16 Sep	Lufthansa	direct
26 Sep - 28 Sep	Lufthansa	direct
28 Sep - 02 Oct	Lufthansa	direct

Also check the deals for one-way flights from Munich 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 Munich to Cologne in September from $137

Return flights