Are there nonstop flights from Kolkata (CCU) to Taipei (TPE)?

No. The fastest connection is via Guangzhou, about 4h 57m of total flying time.

What is the fastest connection from Kolkata (CCU) to Taipei (TPE)?

via Guangzhou ≈ 4h 57m, via Hanoi ≈ 5h 2m, via Yangon ≈ 5h 26m (estimated flying time, excluding layovers).

from 18,000 ANA miles, from 23,000 JAL miles (economy, one way, based on the published award charts).

Netaji Subhash Chandra Bose International Airport (CCU) to Taiwan Taoyuan International Airport (TPE)・3,337 km

No nonstop flights. The fastest connection is via Guangzhou (CAN), about 4h 57m of flying time (layover not included).

With milesANA 18,000 miles+ (via BKK)JAL 23,000 miles+ (via KUL)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

10 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.