Are there nonstop flights from Naples (NAP) to Seoul (ICN)?

No. The fastest connection is via Budapest, about 11h 32m of total flying time.

What is the fastest connection from Naples (NAP) to Seoul (ICN)?

via Budapest ≈ 11h 32m, via Zagreb ≈ 11h 35m, via Vienna ≈ 11h 40m (estimated flying time, excluding layovers).

from 30,000 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Naples International Airport (NAP) to Incheon International Airport (ICN)・8,907 km

No nonstop flights. The fastest connection is via Budapest (BUD), about 11h 32m of flying time (layover not included).

With milesANA 30,000 miles+ (via IST)JAL 37,000 miles+ (via HEL)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.