Are there nonstop flights from Kolkata (CCU) to Nagoya (NGO)?

No. The fastest connection is via Shanghai, about 6h 45m of total flying time.

What is the fastest connection from Kolkata (CCU) to Nagoya (NGO)?

via Shanghai ≈ 6h 45m, via Hanoi ≈ 7h 6m, via Bangkok ≈ 7h 58m (estimated flying time, excluding layovers).

from 19,000 ANA miles (economy, one way, based on the published award charts).

Netaji Subhash Chandra Bose International Airport (CCU) to Chubu Centrair International Airport (NGO)・4,856 km

No nonstop flights. The fastest connection is via Shanghai (PVG), about 6h 45m of flying time (layover not included).

With milesANA 19,000 miles+ (via BKK)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

6 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.