# Distance from Kolkata (CCU) to Old Harbor (OLH)

> 9,452 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,452 km / 5,873 mi / 5,104 nm
- **Estimated flight time**: 12h
- **Heading**: 29° (north northeast)
- **Return heading**: 305° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (India) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -13.5h (When it's 09:53 in Kolkata, it's 20:23 in Old Harbor)
- **Elevation difference**: 39 ft (OLH 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

### [Old Harbor Airport (OLH)](https://www.flightduration.online/airport/olh-old-harbor-old-harbor-airport/1ef266df-067e-64c0-83c2-06bb2780ed98)

- City: Old Harbor, United States
- ICAO: K6R7
- Timezone: America/Anchorage
- Coordinates: 57.220000, -153.270000
- Elevation: 55 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 09:53 in Kolkata, it's 20:23 in Old Harbor.
With a 13.5-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)
- [Old Harbor Airport (OLH)](https://www.flightduration.online/airport/olh-old-harbor-old-harbor-airport/1ef266df-067e-64c0-83c2-06bb2780ed98)
- [Flight duration calculator](/#calculator)