# Distance from Alenquer (ALT) to Hanoi (HAN)

> 17,006 km · estimated flight time 21h · Ultra-long-haul route.

## Summary

- **Distance**: 17,006 km / 10,567 mi / 9,183 nm
- **Estimated flight time**: 21h
- **Heading**: 43° (northeast)
- **Return heading**: 313° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Brazil) → Vietnam
- **Intercontinental**: South America → Asia
- **Time difference**: +11h (When it's 20:40 in Alenquer, it's 07:40 in Hanoi)
- **Elevation difference**: 62 ft (HAN is lower than ALT)

## Airports

### [Alenquer Airport (ALT)](https://www.flightduration.online/airport/alt-alenquer-alenquer-airport/1ef266df-a3e8-6c6a-af27-06bb2780ed98)

- City: Alenquer, Brazil
- ICAO: SDWQ
- Timezone: America/Manaus
- Coordinates: -1.920000, -54.720000
- Elevation: 101 ft

### [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

## 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 20:40 in Alenquer, it's 07:40 in Hanoi.
With a 11-hour time difference, expect significant jet lag.

## Related

- [Alenquer Airport (ALT)](https://www.flightduration.online/airport/alt-alenquer-alenquer-airport/1ef266df-a3e8-6c6a-af27-06bb2780ed98)
- [Noi Bai International Airport (HAN)](https://www.flightduration.online/airport/han-hanoi-noi-bai-international-airport/1ef266df-f632-63cc-97d4-06bb2780ed98)
- [Flight duration calculator](/#calculator)