Direct flights
from Seoul (ICN)
to Kumamoto (KMJ)

Weekly schedule for flights between Incheon Intl (Seoul, South Korea) and Kumamoto (Kumamoto, Japan) operated by 1 airlines.
18 weekly flights operate on this route flying 407mi in 1h30min.
Expect $145 in average for a one-way ticket with the cheapest option at $121.