Kumamoto Airport has long been criticized for its poor access. A decade ago, talks existed regarding a monorail linking the airport with JR’s Sanrigi station, but those talks were frozen in 2008.
With the impending privatization of the airport by three companies and a major overhaul of facilities expected by 2022, talks between these companies and the Kumamoto Prefectural government regarding the monorail have recently started. Kumanichi has at the link an image of the proposed monorail route. - William
