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

Return flights

05 Sep - 09 Sep	Eurowings	direct
05 Sep - 10 Sep	Eurowings	direct
10 Sep - 22 Sep	Eurowings	direct
19 Sep - 24 Sep	Eurowings	direct
07 Sep - 01 Oct	Eurowings	direct
24 Sep - 01 Oct	Eurowings	direct
20 Sep - 21 Sep	Eurowings	direct
25 Sep - 29 Sep	Eurowings	direct
25 Sep - 30 Sep	Eurowings	direct
05 Sep - 19 Sep	Eurowings	direct
05 Sep - 07 Sep	Eurowings	direct
11 Sep - 14 Sep	Eurowings	direct
30 Sep - 02 Oct	Eurowings	direct

Also check the deals for one-way flights from Berlin 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.

Book a cheap hotel in Cologne

Cheap car rent in Cologne

Cheapest return flights from Berlin to Cologne in September from $116

Return flights