The distance from Bantwal to Kolkata is over 2000 km. The most practical way is to fly from Mangalore to Kolkata (CCU) with a layover. Trains are available but take over 30 hours. Flights are the recommended mode for this long-distance travel.
Total Distance: 2000 km by road, 1700 km air distance.
Book early for the best prices.
October to March for pleasant weather.