Are there nonstop flights from Zadar (ZAD) to Seoul (ICN)?

No. The fastest connection is via Budapest, about 11h 8m of total flying time.

What is the fastest connection from Zadar (ZAD) to Seoul (ICN)?

via Budapest ≈ 11h 8m, via Zagreb ≈ 11h 9m, via Vienna ≈ 11h 14m (estimated flying time, excluding layovers).

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

Zadar Airport (ZAD) to Incheon International Airport (ICN)・8,606 km

No nonstop flights. The fastest connection is via Budapest (BUD), about 11h 8m of flying time (layover not included).

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

None.

14 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.