Are there nonstop flights from Seoul (ICN) to Shirahama (SHM)?

No. The fastest connection is via Tokyo, about 2h 57m of total flying time.

What is the fastest connection from Seoul (ICN) to Shirahama (SHM)?

via Tokyo ≈ 2h 57m (estimated flying time, excluding layovers).

Incheon International Airport (ICN) to Nanki Shirahama Airport (SHM)・910 km

No nonstop flights. The fastest connection is via Tokyo (HND), about 2h 57m of flying time (layover not included).

None.

1 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.