# Distance from Fort Smith (FSM) to Sofia (SOF)

> 9,292 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,292 km / 5,774 mi / 5,017 nm
- **Estimated flight time**: 12h
- **Heading**: 41° (northeast)
- **Return heading**: 313° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Bulgaria
- **Intercontinental**: North America → Europe
- **Time difference**: +8h (When it's 00:35 in Fort Smith, it's 08:35 in Sofia)
- **Elevation difference**: 1,273 ft (SOF is higher than FSM)

## Airports

### [Fort Smith Regional Airport (FSM)](https://www.flightduration.online/airport/fsm-fort-smith-fort-smith-regional-airport/1ef266df-1d03-6a42-b07d-06bb2780ed98)

- City: Fort Smith, United States
- ICAO: KFSM
- Timezone: America/Chicago
- Coordinates: 35.300000, -94.400000
- Elevation: 469 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 00:35 in Fort Smith, it's 08:35 in Sofia.
With a 8-hour time difference, expect significant jet lag.

## Related

- [Fort Smith Regional Airport (FSM)](https://www.flightduration.online/airport/fsm-fort-smith-fort-smith-regional-airport/1ef266df-1d03-6a42-b07d-06bb2780ed98)
- [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Flight duration calculator](/#calculator)