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

Return flights

18 Oct - 25 Oct	Air Serbia	direct
18 Oct - 28 Oct	Air Serbia	direct
11 Oct - 14 Oct	Air Serbia	direct
14 Oct - 18 Oct	Air Serbia	direct
14 Oct - 17 Oct	Air Serbia
15 Oct - 18 Oct	Wizz Air Malta
10 Oct - 13 Oct	Austrian Airlines

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Nis in October from 130€

Return flights