# Distance from Herlong (AHC) to Kathmandu (KTM)

> 12,010 km · estimated flight time 15h · Ultra-long-haul route.

## Summary

- **Distance**: 12,010 km / 7,463 mi / 6,485 nm
- **Estimated flight time**: 15h
- **Heading**: 336° (north northwest)
- **Return heading**: 20° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Nepal
- **Intercontinental**: North America → Asia
- **Time difference**: +12.75h (When it's 10:00 in Herlong, it's 22:45 in Kathmandu)
- **Elevation difference**: 378 ft (KTM is higher than AHC)

## Airports

### [Amedee Army Air Field (AHC)](https://flightduration.online/airport/ahc-herlong-amedee-army-air-field/1ef266df-0da9-6f56-8358-06bb2780ed98)

- City: Herlong, United States
- ICAO: KAHC
- Timezone: America/Los_Angeles
- Coordinates: 40.270000, -120.150000
- Elevation: 4,012 ft

### [Tribhuvan International Airport (KTM)](https://flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)

- City: Kathmandu, Nepal
- ICAO: VNKT
- Timezone: Asia/Kathmandu
- Coordinates: 27.700000, 85.360000
- Elevation: 4,390 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 10:00 in Herlong, it's 22:45 in Kathmandu.
With a 12.75-hour time difference, expect significant jet lag.

## Related

- [Amedee Army Air Field (AHC)](https://flightduration.online/airport/ahc-herlong-amedee-army-air-field/1ef266df-0da9-6f56-8358-06bb2780ed98)
- [Tribhuvan International Airport (KTM)](https://flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Flight duration calculator](/#calculator)