Are there nonstop flights from Madrid (MAD) to Kolkata (CCU)?

No. The fastest connection is via Dubai, about 11h 37m of total flying time.

What is the fastest connection from Madrid (MAD) to Kolkata (CCU)?

via Dubai ≈ 11h 37m, via Doha ≈ 11h 40m, via Abu Dhabi ≈ 11h 41m (estimated flying time, excluding layovers).

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

Adolfo Suárez Madrid–Barajas Airport (MAD) to Netaji Subhash Chandra Bose International Airport (CCU)・8,559 km

No nonstop flights. The fastest connection is via Dubai (DXB), about 11h 37m of flying time (layover not included).

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

None.

7 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.