Are there nonstop flights from Rome (FCO) to Kolkata (CCU)?

No. The fastest connection is via New Delhi, about 9h 32m of total flying time.

What is the fastest connection from Rome (FCO) to Kolkata (CCU)?

via New Delhi ≈ 9h 32m, via Dhaka ≈ 9h 54m, via Dubai ≈ 10h 5m (estimated flying time, excluding layovers).

from 29,500 ANA miles, from 37,000 JAL miles (economy, one way, based on the published award charts).

Rome–Fiumicino Leonardo da Vinci International Airport (FCO) to Netaji Subhash Chandra Bose International Airport (CCU)・7,240 km

No nonstop flights. The fastest connection is via New Delhi (DEL), about 9h 32m of flying time (layover not included).

With milesANA 29,500 miles+ (via DEL)JAL 37,000 miles+ (via DXB)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

8 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.