# Distance from Colombo (CMB) to Na Thon (Ko Samui Island) (USM)

> 2,235 km · estimated flight time 4h · Medium-haul route.

## Summary

- **Distance**: 2,235 km / 1,389 mi / 1,207 nm
- **Estimated flight time**: 4h
- **Heading**: 82° (east)
- **Return heading**: 265° (west)
- **Classification**: Medium-haul
- **Type**: International (Sri Lanka) → Thailand
- **Time difference**: +1.5h (When it's 07:57 in Colombo, it's 09:27 in Na Thon (Ko Samui Island))
- **Elevation difference**: 34 ft (USM is higher than CMB)

## Airports

### [Bandaranaike International Apt Colombo Airport (CMB)](https://www.flightduration.online/airport/cmb-colombo-bandaranaike-international-apt-colombo-airport/1ef266df-ef5c-65b6-9127-06bb2780ed98)

- City: Colombo, Sri Lanka
- ICAO: VCBI
- Timezone: Asia/Colombo
- Coordinates: 7.180000, 79.880000
- Elevation: 30 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 medium-haul route that may be operated by either narrow-body or wide-body aircraft depending on demand. Passengers can expect a meal service on most carriers.

Time-zone information: When it's 07:57 in Colombo, it's 09:27 in Na Thon (Ko Samui Island).

## Related

- [Bandaranaike International Apt Colombo Airport (CMB)](https://www.flightduration.online/airport/cmb-colombo-bandaranaike-international-apt-colombo-airport/1ef266df-ef5c-65b6-9127-06bb2780ed98)
- [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)