# Distance from Alenquer (ALT) to Kathmandu (KTM)

> 14,896 km · estimated flight time 19h · Ultra-long-haul route.

## Summary

- **Distance**: 14,896 km / 9,256 mi / 8,043 nm
- **Estimated flight time**: 19h
- **Heading**: 52° (northeast)
- **Return heading**: 297° (west northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Brazil) → Nepal
- **Intercontinental**: South America → Asia
- **Time difference**: +9.75h (When it's 04:23 in Alenquer, it's 14:08 in Kathmandu)
- **Elevation difference**: 4,289 ft (KTM is higher 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

### [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)

- City: Kathmandu, Nepal
- ICAO: VNKT
- Timezone: Asia/Kathmandu
- Coordinates: 27.700000, 85.360000
- Elevation: 4,390 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 04:23 in Alenquer, it's 14:08 in Kathmandu.
With a 9.75-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)
- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Flight duration calculator](/#calculator)