# Distance from Butte (BTM) to Kathmandu (KTM)

> 11,629 km · estimated flight time 15h · Ultra-long-haul route.

## Summary

- **Distance**: 11,629 km / 7,226 mi / 6,279 nm
- **Estimated flight time**: 15h
- **Heading**: 344° (north northwest)
- **Return heading**: 13° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Nepal
- **Intercontinental**: North America → Asia
- **Time difference**: +11.75h (When it's 18:55 in Butte, it's 06:40 in Kathmandu)
- **Elevation difference**: 1,161 ft (KTM is lower than BTM)

## Airports

### [Bert Mooney Airport (BTM)](https://www.flightduration.online/airport/btm-butte-bert-mooney-airport/1ef266df-1175-60a4-aa32-06bb2780ed98)

- City: Butte, United States
- ICAO: KBTM
- Timezone: America/Denver
- Coordinates: 45.950000, -112.500000
- Elevation: 5,551 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 18:55 in Butte, it's 06:40 in Kathmandu.
With a 11.75-hour time difference, expect significant jet lag.

## Related

- [Bert Mooney Airport (BTM)](https://www.flightduration.online/airport/btm-butte-bert-mooney-airport/1ef266df-1175-60a4-aa32-06bb2780ed98)
- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Flight duration calculator](/#calculator)