# Distance from Colombo (CMB) to Osan Air Base (OSN)

> 5,799 km · estimated flight time 8h · Long-haul route.

## Summary

- **Distance**: 5,799 km / 3,603 mi / 3,131 nm
- **Estimated flight time**: 8h
- **Heading**: 48° (northeast)
- **Return heading**: 247° (west southwest)
- **Classification**: Long-haul
- **Type**: International (Sri Lanka) → South Korea
- **Time difference**: +3.5h (When it's 13:00 in Colombo, it's 16:30 in Osan Air Base)
- **Elevation difference**: 8 ft (OSN 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

### [Osan Air Base (OSN)](https://www.flightduration.online/airport/osn-osan-air-base/1ef266df-8e18-641c-9d4f-06bb2780ed98)

- City: Osan Air Base, South Korea
- ICAO: RKSO
- Timezone: Asia/Seoul
- Coordinates: 37.090000, 127.030000
- Elevation: 38 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 13:00 in Colombo, it's 16:30 in Osan Air Base.
The 3.5-hour time difference may cause some jet lag.

## Related

- [Bandaranaike International Apt Colombo Airport (CMB)](https://www.flightduration.online/airport/cmb-colombo-bandaranaike-international-apt-colombo-airport/1ef266df-ef5c-65b6-9127-06bb2780ed98)
- [Osan Air Base (OSN)](https://www.flightduration.online/airport/osn-osan-air-base/1ef266df-8e18-641c-9d4f-06bb2780ed98)
- [Flight duration calculator](/#calculator)