# Distance from Herlong (AHC) to Sofia (SOF)

> 10,089 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,089 km / 6,269 mi / 5,448 nm
- **Estimated flight time**: 13h
- **Heading**: 26° (north northeast)
- **Return heading**: 333° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Bulgaria
- **Intercontinental**: North America → Europe
- **Time difference**: +10h (When it's 08:42 in Herlong, it's 18:42 in Sofia)
- **Elevation difference**: 2,270 ft (SOF is lower 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

### [Sofia Airport (SOF)](https://flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)

- City: Sofia, Bulgaria
- ICAO: LBSF
- Timezone: Europe/Sofia
- Coordinates: 42.700000, 23.410000
- Elevation: 1,742 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 08:42 in Herlong, it's 18:42 in Sofia.
With a 10-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)
- [Sofia Airport (SOF)](https://flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Flight duration calculator](/#calculator)