Are there nonstop flights from Osijek (OSI) to Belgrade (BEG)?

No. The fastest connection is via Zagreb, about 1h 39m of total flying time.

What is the fastest connection from Osijek (OSI) to Belgrade (BEG)?

via Zagreb ≈ 1h 39m, via Dubrovnik ≈ 1h 44m, via Split ≈ 1h 46m (estimated flying time, excluding layovers).

Osijek Airport (OSI) to Belgrade Nikola Tesla Airport (BEG)・138 km

No nonstop flights. The fastest connection is via Zagreb (ZAG), about 1h 39m of flying time (layover not included).

None.

4 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.