Are there nonstop flights from Kumejima (UEO) to Seoul (ICN)?

No. The fastest connection is via Okinawa (Naha), about 2h 36m of total flying time.

What is the fastest connection from Kumejima (UEO) to Seoul (ICN)?

via Okinawa (Naha) ≈ 2h 36m, via Tokyo ≈ 4h 19m (estimated flying time, excluding layovers).

Kumejima Airport (UEO) to Incheon International Airport (ICN)・1,235 km

No nonstop flights. The fastest connection is via Okinawa (Naha) (OKA), about 2h 36m of flying time (layover not included).

None.

2 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.