# Distance from Colombo (CMB) to Union Island (UNI)

> 15,205 km · estimated flight time 19h · Ultra-long-haul route.

## Summary

- **Distance**: 15,205 km / 9,448 mi / 8,210 nm
- **Estimated flight time**: 19h
- **Heading**: 297° (west northwest)
- **Return heading**: 65° (east northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Sri Lanka) → Saint Vincent
- **Intercontinental**: Asia → North America
- **Time difference**: -9.5h (When it's 13:51 in Colombo, it's 04:21 in Union Island)
- **Elevation difference**: 14 ft (UNI is lower 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

### [Union Island International Airport (UNI)](https://www.flightduration.online/airport/uni-union-island-union-island-international-airport/1ef266df-e292-6308-afea-06bb2780ed98)

- City: Union Island, Saint Vincent
- ICAO: TVSU
- Timezone: America/St_Vincent
- Coordinates: 12.600000, -61.410000
- Elevation: 16 ft

## Route notes

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

Time-zone information: When it's 13:51 in Colombo, it's 04:21 in Union Island.
With a 9.5-hour time difference, expect significant 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)
- [Union Island International Airport (UNI)](https://www.flightduration.online/airport/uni-union-island-union-island-international-airport/1ef266df-e292-6308-afea-06bb2780ed98)
- [Flight duration calculator](/#calculator)