# Distance from Kolkata (CCU) to Chicago/Rockford (RFD)

> 12,800 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,800 km / 7,953 mi / 6,911 nm
- **Estimated flight time**: 16h
- **Heading**: 358° (north)
- **Return heading**: 2° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (India) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -10.5h (When it's 20:36 in Kolkata, it's 10:06 in Chicago/Rockford)
- **Elevation difference**: 726 ft (RFD is higher than CCU)

## Airports

### [Netaji Subhash Chandra Bose International Airport (CCU)](https://www.flightduration.online/airport/ccu-kolkata-netaji-subhash-chandra-bose-international-airport/1ef266df-f023-6fe4-a8d5-06bb2780ed98)

- City: Kolkata, India
- ICAO: VECC
- Timezone: Asia/Kolkata
- Coordinates: 22.650000, 88.450000
- Elevation: 16 ft

### [Chicago/Rockford International Airport (RFD)](https://www.flightduration.online/airport/rfd-chicagorockford-chicagorockford-international-airport/1ef266df-34f9-6eee-9048-06bb2780ed98)

- City: Chicago/Rockford, United States
- ICAO: KRFD
- Timezone: America/Chicago
- Coordinates: 42.200000, -89.100000
- Elevation: 742 ft

## Route notes

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

Time-zone information: When it's 20:36 in Kolkata, it's 10:06 in Chicago/Rockford.
With a 10.5-hour time difference, expect significant jet lag.

## Related

- [Netaji Subhash Chandra Bose International Airport (CCU)](https://www.flightduration.online/airport/ccu-kolkata-netaji-subhash-chandra-bose-international-airport/1ef266df-f023-6fe4-a8d5-06bb2780ed98)
- [Chicago/Rockford International Airport (RFD)](https://www.flightduration.online/airport/rfd-chicagorockford-chicagorockford-international-airport/1ef266df-34f9-6eee-9048-06bb2780ed98)
- [Flight duration calculator](/#calculator)