# Distance from Alenquer (ALT) to Singapore (SIN)

> 17,648 km · estimated flight time 22h · Ultra-long-haul route.

## Summary

- **Distance**: 17,648 km / 10,966 mi / 9,529 nm
- **Estimated flight time**: 22h
- **Heading**: 91° (east)
- **Return heading**: 268° (west)
- **Classification**: Ultra-long-haul
- **Type**: International (Brazil) → Singapore
- **Intercontinental**: South America → Asia
- **Time difference**: +12h (When it's 08:11 in Alenquer, it's 20:11 in Singapore)
- **Elevation difference**: 79 ft (SIN 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

### [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

## 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 08:11 in Alenquer, it's 20:11 in Singapore.
With a 12-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)
- [Singapore Changi International Airport (SIN)](https://www.flightduration.online/airport/sin-singapore-singapore-changi-international-airport/1ef266e0-00ca-656e-b481-06bb2780ed98)
- [Flight duration calculator](/#calculator)