# Distance from Singapore (SIN) to Union Island (UNI)

> 17,778 km · estimated flight time 22h · Ultra-long-haul route.

## Summary

- **Distance**: 17,778 km / 11,047 mi / 9,600 nm
- **Estimated flight time**: 22h
- **Heading**: 314° (northwest)
- **Return heading**: 47° (northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Singapore) → Saint Vincent
- **Intercontinental**: Asia → North America
- **Time difference**: -12h (When it's 05:49 in Singapore, it's 17:49 in Union Island)
- **Elevation difference**: 6 ft (UNI is lower than SIN)

## Airports

### [Singapore Changi International Airport (SIN)](https://www.flightduration.online/airport/sin-singapore-singapore-changi-international-airport/1ef266e0-00ca-656e-b481-06bb2780ed98)

- City: Singapore, Singapore
- ICAO: WSSS
- Timezone: Asia/Singapore
- Coordinates: 1.350000, 103.990000
- Elevation: 22 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 05:49 in Singapore, it's 17:49 in Union Island.
With a 12-hour time difference, expect significant jet lag.

## Related

- [Singapore Changi International Airport (SIN)](https://www.flightduration.online/airport/sin-singapore-singapore-changi-international-airport/1ef266e0-00ca-656e-b481-06bb2780ed98)
- [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)