AirHint found the following cheapest return flights from Cologne (CGN) to Nis (INI) in October 2025 (see full year).

Return flights

07 Oct - 11 Oct	Air Serbia	direct
04 Oct - 18 Oct	Air Serbia	direct
04 Oct - 11 Oct	Air Serbia	direct
14 Oct - 17 Oct	Air Serbia
14 Oct - 16 Oct	Air Serbia
12 Oct - 18 Oct	Ryanair
11 Oct - 18 Oct	Ryanair
05 Oct - 19 Oct	Ryanair
11 Oct - 18 Oct	Air Serbia	direct
11 Oct - 17 Oct	Air Serbia

Also check the deals for one-way flights from Cologne to Nis in October.

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 Cologne to Nis in October from $166

Return flights