Are there nonstop flights from Hong Kong (HKG) to Kumamoto (KMJ)?

No. The fastest connection is via Taipei, about 3h 27m of total flying time.

What is the fastest connection from Hong Kong (HKG) to Kumamoto (KMJ)?

via Taipei ≈ 3h 27m, via Taichung ≈ 3h 28m, via Kaohsiung ≈ 3h 36m (estimated flying time, excluding layovers).

from 8,500 ANA miles, from 11,000 JAL miles (economy, one way, based on the published award charts).

Hong Kong International Airport (HKG) to Kumamoto Airport (KMJ)・2,034 km

No nonstop flights. The fastest connection is via Taipei (TPE), about 3h 27m of flying time (layover not included).

With milesANA 8,500 miles+ (via HND)JAL 11,000 miles+ (via HND)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

10 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.