# Distance from Hanoi (HAN) to Union Island (UNI)

> 16,004 km · estimated flight time 20h · Ultra-long-haul route.

## Summary

- **Distance**: 16,004 km / 9,944 mi / 8,641 nm
- **Estimated flight time**: 20h
- **Heading**: 338° (north northwest)
- **Return heading**: 20° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Vietnam) → Saint Vincent
- **Intercontinental**: Asia → North America
- **Time difference**: -11h (When it's 15:22 in Hanoi, it's 04:22 in Union Island)
- **Elevation difference**: 23 ft (UNI is lower than HAN)

## Airports

### [Noi Bai International Airport (HAN)](https://www.flightduration.online/airport/han-hanoi-noi-bai-international-airport/1ef266df-f632-63cc-97d4-06bb2780ed98)

- City: Hanoi, Vietnam
- ICAO: VVNB
- Timezone: Asia/Ho_Chi_Minh
- Coordinates: 21.220000, 105.810000
- Elevation: 39 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 15:22 in Hanoi, it's 04:22 in Union Island.
With a 11-hour time difference, expect significant jet lag.

## Related

- [Noi Bai International Airport (HAN)](https://www.flightduration.online/airport/han-hanoi-noi-bai-international-airport/1ef266df-f632-63cc-97d4-06bb2780ed98)
- [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)