# Distance from Aspen (ASE) to Sofia (SOF)

> 9,621 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,621 km / 5,978 mi / 5,195 nm
- **Estimated flight time**: 12h
- **Heading**: 34° (northeast)
- **Return heading**: 324° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Bulgaria
- **Intercontinental**: North America → Europe
- **Time difference**: +9h (When it's 22:38 in Aspen, it's 07:38 in Sofia)
- **Elevation difference**: 6,096 ft (SOF is lower than ASE)

## Airports

### [Aspen-Pitkin County/Sardy Field (ASE)](https://www.flightduration.online/airport/ase-aspen-aspen-pitkin-countysardy-field/1ef266df-0ee3-6b38-85f6-06bb2780ed98)

- City: Aspen, United States
- ICAO: KASE
- Timezone: America/Denver
- Coordinates: 39.220000, -106.870000
- Elevation: 7,838 ft

### [Sofia Airport (SOF)](https://www.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 22:38 in Aspen, it's 07:38 in Sofia.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Aspen-Pitkin County/Sardy Field (ASE)](https://www.flightduration.online/airport/ase-aspen-aspen-pitkin-countysardy-field/1ef266df-0ee3-6b38-85f6-06bb2780ed98)
- [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Flight duration calculator](/#calculator)