Nis (INI) — Hahn (HHN): how long is the flight?
INI — HHN: scheduled duration in the saved data is 2 hr 15 min, the median of available flights.
INI — HHN: what is the distance?
The straight-line distance between airports INI and HHN is about 1,331 km, not the actual flight path.
Airlines on this route
The saved board for INI — HHN lists these airlines: Air Serbia.