# Distance from Kathmandu (KTM) to Tres Arroyos (OYO)

> 16,627 km · estimated flight time 21h · Ultra-long-haul route.

## Summary

- **Distance**: 16,627 km / 10,332 mi / 8,978 nm
- **Estimated flight time**: 21h
- **Heading**: 241° (west southwest)
- **Return heading**: 100° (east)
- **Classification**: Ultra-long-haul
- **Type**: International (Nepal) → Argentina
- **Intercontinental**: Asia → South America
- **Time difference**: -8.75h (When it's 02:48 in Kathmandu, it's 18:03 in Tres Arroyos)
- **Elevation difference**: 3,990 ft (OYO 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

### [Tres Arroyos Airport (OYO)](https://www.flightduration.online/airport/oyo-tres-arroyos-tres-arroyos-airport/1ef266df-9359-6296-b671-06bb2780ed98)

- City: Tres Arroyos, Argentina
- ICAO: SAZH
- Timezone: America/Argentina/Buenos_Aires
- Coordinates: -38.390000, -60.330000
- Elevation: 400 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 02:48 in Kathmandu, it's 18:03 in Tres Arroyos.
With a 8.75-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)
- [Tres Arroyos Airport (OYO)](https://www.flightduration.online/airport/oyo-tres-arroyos-tres-arroyos-airport/1ef266df-9359-6296-b671-06bb2780ed98)
- [Flight duration calculator](/#calculator)