Are there nonstop flights from Colombo (CMB) to Kolkata (CCU)?

No. The fastest connection is via Chennai, about 3h 24m of total flying time.

What is the fastest connection from Colombo (CMB) to Kolkata (CCU)?

via Chennai ≈ 3h 24m, via Bengaluru ≈ 3h 39m, via Hyderabad ≈ 3h 45m (estimated flying time, excluding layovers).

from 15,000 ANA miles (economy, one way, based on the published award charts).

Bandaranaike International Colombo Airport (CMB) to Netaji Subhash Chandra Bose International Airport (CCU)・1,950 km

No nonstop flights. The fastest connection is via Chennai (MAA), about 3h 24m of flying time (layover not included).

With milesANA 15,000 miles+ (via BOM)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

11 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.