# Distance from Sofia (SOF) to Ulsan (USN)

> 8,525 km · estimated flight time 11h · Long-haul route.

## Summary

- **Distance**: 8,525 km / 5,297 mi / 4,603 nm
- **Estimated flight time**: 11h
- **Heading**: 53° (northeast)
- **Return heading**: 313° (northwest)
- **Classification**: Long-haul
- **Type**: International (Bulgaria) → South Korea
- **Intercontinental**: Europe → Asia
- **Time difference**: +6h (When it's 17:03 in Sofia, it's 23:03 in Ulsan)
- **Elevation difference**: 1,697 ft (USN is lower than SOF)

## Airports

### [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

### [Ulsan Airport (USN)](https://www.flightduration.online/airport/usn-ulsan-ulsan-airport/1ef266df-8de2-6506-b034-06bb2780ed98)

- City: Ulsan, South Korea
- ICAO: RKPU
- Timezone: Asia/Seoul
- Coordinates: 35.590000, 129.350000
- Elevation: 45 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 17:03 in Sofia, it's 23:03 in Ulsan.
With a 6-hour time difference, expect significant jet lag.

## Related

- [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Ulsan Airport (USN)](https://www.flightduration.online/airport/usn-ulsan-ulsan-airport/1ef266df-8de2-6506-b034-06bb2780ed98)
- [Flight duration calculator](/#calculator)