# Distance from Adelaide (ADL) to Alenquer (ALT)

> 15,689 km · estimated flight time 19h · Ultra-long-haul route.

## Summary

- **Distance**: 15,689 km / 9,749 mi / 8,471 nm
- **Estimated flight time**: 19h
- **Heading**: 159° (south southeast)
- **Return heading**: 197° (south southwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Australia) → Brazil
- **Intercontinental**: Oceania → South America
- **Time difference**: -13.5h (When it's 11:28 in Adelaide, it's 21:58 in Alenquer)
- **Elevation difference**: 81 ft (ALT is higher than ADL)

## Airports

### [Adelaide International Airport (ADL)](https://www.flightduration.online/airport/adl-adelaide-adelaide-international-airport/1ef266e0-1682-610e-a772-06bb2780ed98)

- City: Adelaide, Australia
- ICAO: YPAD
- Timezone: Australia/Adelaide
- Coordinates: -34.950000, 138.530000
- Elevation: 20 ft

### [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

## 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 11:28 in Adelaide, it's 21:58 in Alenquer.
With a 13.5-hour time difference, expect significant jet lag.

## Related

- [Adelaide International Airport (ADL)](https://www.flightduration.online/airport/adl-adelaide-adelaide-international-airport/1ef266e0-1682-610e-a772-06bb2780ed98)
- [Alenquer Airport (ALT)](https://www.flightduration.online/airport/alt-alenquer-alenquer-airport/1ef266df-a3e8-6c6a-af27-06bb2780ed98)
- [Flight duration calculator](/#calculator)