Are there nonstop flights from Seoul (ICN) to Belgrade (BEG)?

No. The fastest connection is via Astana, about 10h 47m of total flying time.

What is the fastest connection from Seoul (ICN) to Belgrade (BEG)?

via Astana ≈ 10h 47m, via Beijing ≈ 10h 48m, via Budapest ≈ 10h 55m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Incheon International Airport (ICN) to Belgrade Nikola Tesla Airport (BEG)・8,251 km

No nonstop flights. The fastest connection is via Astana (NQZ), about 10h 47m of flying time (layover not included).

With milesANA 30,000 miles+ (via WAW)JAL 45,000 miles+ (via DOH)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

24 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.