There are several ways to calculate the distance from Kolkata to London. Here are two standard methods:
Vincenty's formula (applied above)
4318.050 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.
4311.152 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).
How long does it take to fly from Kolkata to London?
The estimated flight time from Netaji Subhas Chandra Bose International Airport to London Heathrow Airport is
9 hours and 54 minutes.
What is the time difference between Kolkata and London?
The time difference between Kolkata and London is 4 hours 30 minutes. London is 4 hours 30 minutes behind Kolkata.
Flight carbon footprint between Netaji Subhas Chandra Bose International Airport (CCU) and London Heathrow Airport (LHR)
On average, flying from Kolkata to London generates about 580 kg of CO2 per passenger, and 580 kilograms equals 1 278 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path from Kolkata to London
See the map of the shortest flight path between Netaji Subhas Chandra Bose International Airport (CCU) and London Heathrow Airport (LHR).