# Distance from Fort Irwin/Barstow (BYS) to Kathmandu (KTM)

> 12,641 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,641 km / 7,855 mi / 6,826 nm
- **Estimated flight time**: 16h
- **Heading**: 339° (north northwest)
- **Return heading**: 19° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Nepal
- **Intercontinental**: North America → Asia
- **Time difference**: +12.75h (When it's 08:02 in Fort Irwin/Barstow, it's 20:47 in Kathmandu)
- **Elevation difference**: 2,040 ft (KTM is higher than BYS)

## Airports

### [Bicycle Lake Army Air Field (BYS)](https://www.flightduration.online/airport/bys-fort-irwinbarstow-bicycle-lake-army-air-field/1ef266df-120f-6028-9ae4-06bb2780ed98)

- City: Fort Irwin/Barstow, United States
- ICAO: KBYS
- Timezone: America/Los_Angeles
- Coordinates: 35.280000, -116.630000
- Elevation: 2,350 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 08:02 in Fort Irwin/Barstow, it's 20:47 in Kathmandu.
With a 12.75-hour time difference, expect significant jet lag.

## Related

- [Bicycle Lake Army Air Field (BYS)](https://www.flightduration.online/airport/bys-fort-irwinbarstow-bicycle-lake-army-air-field/1ef266df-120f-6028-9ae4-06bb2780ed98)
- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Flight duration calculator](/#calculator)