Are there nonstop flights from Argos Orestiko (KSO) to Kozani (KZI)?

Yes. Sky Express (Greece) fly this route. Flight time is about 34m.

Argos Orestiko → Kozani

Kastoria National Airport Aristotle (KSO) to Kozani National Airport Filippos (KZI)・51 km

Nonstop flights available (1 airline). Flight time about 34m. Nonstop return flights also operate.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.