Are there nonstop flights from Košice (KSC) to Niš (INI)?

No. The fastest connection is via Vienna, about 2h 12m of total flying time.

What is the fastest connection from Košice (KSC) to Niš (INI)?

via Vienna ≈ 2h 12m (estimated flying time, excluding layovers).

Košice International Airport (KSC) to Niš Constantine the Great Airport (INI)・594 km

No nonstop flights. The fastest connection is via Vienna (VIE), about 2h 12m of flying time (layover not included).

None.

1 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

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