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How far is Kolkata from Chicago, IL?

The distance between Chicago (Chicago O'Hare International Airport) and Kolkata (Netaji Subhas Chandra Bose International Airport) is 7978 miles / 12839 kilometers / 6932 nautical miles.

Chicago O'Hare International Airport – Netaji Subhas Chandra Bose International Airport

Distance arrow
7978
Miles
Distance arrow
12839
Kilometers
Distance arrow
6932
Nautical miles
Flight time duration
15 h 36 min
Time Difference
11 h 30 min
CO2 emission
995 kg

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Distance from Chicago to Kolkata

There are several ways to calculate the distance from Chicago to Kolkata. Here are two standard methods:

Vincenty's formula (applied above)
  • 7977.523 miles
  • 12838.579 kilometers
  • 6932.278 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula
  • 7964.990 miles
  • 12818.409 kilometers
  • 6921.387 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 Chicago to Kolkata?

The estimated flight time from Chicago O'Hare International Airport to Netaji Subhas Chandra Bose International Airport is 15 hours and 36 minutes.

Flight carbon footprint between Chicago O'Hare International Airport (ORD) and Netaji Subhas Chandra Bose International Airport (CCU)

On average, flying from Chicago to Kolkata generates about 995 kg of CO2 per passenger, and 995 kilograms equals 2 194 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Chicago to Kolkata

See the map of the shortest flight path between Chicago O'Hare International Airport (ORD) and Netaji Subhas Chandra Bose International Airport (CCU).

Airport information

Origin Chicago O'Hare International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″W
Destination Netaji Subhas Chandra Bose International Airport
City: Kolkata
Country: India Flag of India
IATA Code: CCU
ICAO Code: VECC
Coordinates: 22°39′16″N, 88°26′48″E