Air distance from Tucson, USA to Kolkata, India is 8473.7 Miles (13637.1 Kilometers / 7358.6 Nautical Miles).
17 hrs, 35 mins is the flight duration between Tucson and Kolkata. This is the In-The-Air flight time. You should also add the taxi time, airport wait times and possible delays due to bad weather, etc. for the total flight duration time.