# Distance from Impfondo (ION) to Sofia (SOF)

> 4,599 km · estimated flight time 6h · Long-haul route.

## Summary

- **Distance**: 4,599 km / 2,858 mi / 2,483 nm
- **Estimated flight time**: 6h
- **Heading**: 6° (north)
- **Return heading**: 188° (south)
- **Classification**: Long-haul
- **Type**: International (Congo) → Bulgaria
- **Intercontinental**: Africa → Europe
- **Time difference**: +2h (When it's 07:46 in Impfondo, it's 09:46 in Sofia)
- **Elevation difference**: 643 ft (SOF is higher than ION)

## Airports

### [Impfondo Airport (ION)](https://www.flightduration.online/airport/ion-impfondo-impfondo-airport/1ef266de-d690-615a-a20b-06bb2780ed98)

- City: Impfondo, Congo
- ICAO: FCOI
- Timezone: Africa/Brazzaville
- Coordinates: 1.620000, 18.070000
- Elevation: 1,099 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 a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

Time-zone information: When it's 07:46 in Impfondo, it's 09:46 in Sofia.

## Related

- [Impfondo Airport (ION)](https://www.flightduration.online/airport/ion-impfondo-impfondo-airport/1ef266de-d690-615a-a20b-06bb2780ed98)
- [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Flight duration calculator](/#calculator)