# Distance from Kathmandu (KTM) to Los Alamos (LAM)

> 12,841 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,841 km / 7,979 mi / 6,934 nm
- **Estimated flight time**: 16h
- **Heading**: 10° (north)
- **Return heading**: 349° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Nepal) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -11.75h (When it's 06:13 in Kathmandu, it's 18:28 in Los Alamos)
- **Elevation difference**: 2,781 ft (LAM is higher 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

### [Los Alamos Airport (LAM)](https://www.flightduration.online/airport/lam-los-alamos-los-alamos-airport/1ef266df-26d3-6ec8-98d2-06bb2780ed98)

- City: Los Alamos, United States
- ICAO: KLAM
- Timezone: America/Denver
- Coordinates: 35.880000, -106.270000
- Elevation: 7,171 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 06:13 in Kathmandu, it's 18:28 in Los Alamos.
With a 11.75-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)
- [Los Alamos Airport (LAM)](https://www.flightduration.online/airport/lam-los-alamos-los-alamos-airport/1ef266df-26d3-6ec8-98d2-06bb2780ed98)
- [Flight duration calculator](/#calculator)