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

Return flights

01 Jul - 26 Jul	Air Serbia	direct
15 Jul - 29 Jul	Air Serbia	direct
03 Jul - 10 Jul	SWISS
29 Jul - 19 Aug	Air Serbia	direct
26 Jul - 05 Aug	Air Serbia	direct
05 Jul - 26 Jul	Ryanair
26 Jul - 12 Aug	Air Serbia	direct
29 Jul - 23 Aug	Air Serbia	direct
19 Jul - 09 Aug	Air Serbia	direct
26 Jul - 23 Aug	Air Serbia	direct
02 Jul - 14 Jul	Condor
05 Jul - 08 Jul	KLM
04 Jul - 07 Jul	easyJet

Also check the deals for one-way flights from Frankfurt to Nis in July.

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 July from 169€

Return flights