Are there nonstop flights from Tokyo (NRT) to Kumamoto (KMJ)?

Yes. Jetstar Japan fly this route. Flight time is about 1h 36m.

What is the fastest connection from Tokyo (NRT) to Kumamoto (KMJ)?

via Osaka ≈ 2h 6m, via Nagoya ≈ 2h 6m, via Osaka ≈ 2h 7m (estimated flying time, excluding layovers).

from 12,000 ANA miles, from 13,000 JAL miles (economy, one way, based on the published award charts).

Narita International Airport (NRT) to Kumamoto Airport (KMJ)・934 km

Nonstop flights available (1 airline). Flight time about 1h 36m. Nonstop return flights also operate.

With milesANA 12,000 miles+ (via ITM)JAL 13,000 miles+ (via ITM)Economy, one way, estimate. Tap a connection for miles by cabin.

5 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.