Distance between Kolkata and Patna is 471.23 km.
This distance is equal to 292.81 miles, and 254.28 nautical miles.
The distance line on map shows distance from Kolkata to Patna between two cities.
If you travel with an airplane (which has average speed of 560 miles) between Kolkata to Patna,
It takes 0.52 hours to arrive.