# Distance from Bucharest (OTP) to Na Thon (Ko Samui Island) (USM)

> 7,996 km · estimated flight time 10h · Long-haul route.

## Summary

- **Distance**: 7,996 km / 4,968 mi / 4,317 nm
- **Estimated flight time**: 10h
- **Heading**: 94° (east)
- **Return heading**: 314° (northwest)
- **Classification**: Long-haul
- **Type**: International (Romania) → Thailand
- **Intercontinental**: Europe → Asia
- **Time difference**: +4h (When it's 03:57 in Bucharest, it's 07:57 in Na Thon (Ko Samui Island))
- **Elevation difference**: 250 ft (USM is lower than OTP)

## Airports

### [Henri Coanda International Airport (OTP)](https://www.flightduration.online/airport/otp-bucharest-henri-coanda-international-airport/1ef266df-5682-65f2-900a-06bb2780ed98)

- City: Bucharest, Romania
- ICAO: LROP
- Timezone: Europe/Bucharest
- Coordinates: 44.570000, 26.100000
- Elevation: 314 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 03:57 in Bucharest, it's 07:57 in Na Thon (Ko Samui Island).
The 4-hour time difference may cause some jet lag.

## Related

- [Henri Coanda International Airport (OTP)](https://www.flightduration.online/airport/otp-bucharest-henri-coanda-international-airport/1ef266df-5682-65f2-900a-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)