Are there nonstop flights from Yogyakarta (YIA) to Seoul (ICN)?

No. The fastest connection is via Jakarta, about 7h 42m of total flying time.

What is the fastest connection from Yogyakarta (YIA) to Seoul (ICN)?

via Jakarta ≈ 7h 42m, via Bali (Denpasar) ≈ 7h 52m, via Singapore ≈ 7h 54m (estimated flying time, excluding layovers).

from 23,000 JAL miles (economy, one way, based on the published award charts).

Yogyakarta International Airport (YIA) to Incheon International Airport (ICN)・5,326 km

No nonstop flights. The fastest connection is via Jakarta (CGK), about 7h 42m of flying time (layover not included).

With milesJAL 23,000 miles+ (via CGK)Economy, one way, estimate. Tap a connection for miles by cabin.

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.