# Distance from Hayden (HDN) to Kathmandu (KTM)

> 12,323 km · estimated flight time 15h · Ultra-long-haul route.

## Summary

- **Distance**: 12,323 km / 7,657 mi / 6,654 nm
- **Estimated flight time**: 15h
- **Heading**: 348° (north northwest)
- **Return heading**: 10° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Nepal
- **Intercontinental**: North America → Asia
- **Time difference**: +11.75h (When it's 18:30 in Hayden, it's 06:15 in Kathmandu)
- **Elevation difference**: 2,216 ft (KTM is lower than HDN)

## Airports

### [Yampa Valley Airport (HDN)](https://www.flightduration.online/airport/hdn-hayden-yampa-valley-airport/1ef266df-204e-6274-9537-06bb2780ed98)

- City: Hayden, United States
- ICAO: KHDN
- Timezone: America/Denver
- Coordinates: 40.480000, -107.220000
- Elevation: 6,606 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 18:30 in Hayden, it's 06:15 in Kathmandu.
With a 11.75-hour time difference, expect significant jet lag.

## Related

- [Yampa Valley Airport (HDN)](https://www.flightduration.online/airport/hdn-hayden-yampa-valley-airport/1ef266df-204e-6274-9537-06bb2780ed98)
- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Flight duration calculator](/#calculator)