# Distance from Sofia (SOF) to Na Thon (Ko Samui Island) (USM)

> 8,200 km · estimated flight time 11h · Long-haul route.

## Summary

- **Distance**: 8,200 km / 5,096 mi / 4,428 nm
- **Estimated flight time**: 11h
- **Heading**: 92° (east)
- **Return heading**: 312° (northwest)
- **Classification**: Long-haul
- **Type**: International (Bulgaria) → Thailand
- **Intercontinental**: Europe → Asia
- **Time difference**: +4h (When it's 03:54 in Sofia, it's 07:54 in Na Thon (Ko Samui Island))
- **Elevation difference**: 1,678 ft (USM 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

### [Samui Airport (USM)](https://www.flightduration.online/airport/usm-na-thon-ko-samui-island-samui-airport/1ef266df-f5a3-6c12-8349-06bb2780ed98)

- City: Na Thon (Ko Samui Island), Thailand
- ICAO: VTSM
- Timezone: Asia/Bangkok
- Coordinates: 9.550000, 100.060000
- Elevation: 64 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 03:54 in Sofia, it's 07:54 in Na Thon (Ko Samui Island).
The 4-hour time difference may cause some jet lag.

## Related

- [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Samui Airport (USM)](https://www.flightduration.online/airport/usm-na-thon-ko-samui-island-samui-airport/1ef266df-f5a3-6c12-8349-06bb2780ed98)
- [Flight duration calculator](/#calculator)