# Distance from Kolkata (CCU) to Chicago/Romeoville (LOT)

> 12,861 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,861 km / 7,991 mi / 6,944 nm
- **Estimated flight time**: 16h
- **Heading**: 357° (north)
- **Return heading**: 4° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (India) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -10.5h (When it's 19:05 in Kolkata, it's 08:35 in Chicago/Romeoville)
- **Elevation difference**: 663 ft (LOT 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

### [Lewis University Airport (LOT)](https://www.flightduration.online/airport/lot-chicagoromeoville-lewis-university-airport/1ef266df-27f2-6ae8-ad74-06bb2780ed98)

- City: Chicago/Romeoville, United States
- ICAO: KLOT
- Timezone: America/Chicago
- Coordinates: 41.610000, -88.100000
- Elevation: 679 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 19:05 in Kolkata, it's 08:35 in Chicago/Romeoville.
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)
- [Lewis University Airport (LOT)](https://www.flightduration.online/airport/lot-chicagoromeoville-lewis-university-airport/1ef266df-27f2-6ae8-ad74-06bb2780ed98)
- [Flight duration calculator](/#calculator)