# Distance from Kathmandu (KTM) to Puerto Williams (WPU)

> 16,288 km · estimated flight time 20h · Ultra-long-haul route.

## Summary

- **Distance**: 16,288 km / 10,121 mi / 8,795 nm
- **Estimated flight time**: 20h
- **Heading**: 208° (south southwest)
- **Return heading**: 133° (southeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Nepal) → Chile
- **Intercontinental**: Asia → South America
- **Time difference**: -9.75h (When it's 04:08 in Kathmandu, it's 18:23 in Puerto Williams)
- **Elevation difference**: 4,302 ft (WPU is lower than KTM)

## Airports

### [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

### [Guardiamarina Zanartu Airport (WPU)](https://www.flightduration.online/airport/wpu-puerto-williams-guardiamarina-zanartu-airport/1ef266df-9aa6-65a8-98e0-06bb2780ed98)

- City: Puerto Williams, Chile
- ICAO: SCGZ
- Timezone: America/Santiago
- Coordinates: -54.930000, -67.630000
- Elevation: 88 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 04:08 in Kathmandu, it's 18:23 in Puerto Williams.
With a 9.75-hour time difference, expect significant jet lag.

## Related

- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Guardiamarina Zanartu Airport (WPU)](https://www.flightduration.online/airport/wpu-puerto-williams-guardiamarina-zanartu-airport/1ef266df-9aa6-65a8-98e0-06bb2780ed98)
- [Flight duration calculator](/#calculator)