# Distance from Boundary (BYA) to Kathmandu (KTM)

> 9,038 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,038 km / 5,616 mi / 4,880 nm
- **Estimated flight time**: 12h
- **Heading**: 320° (northwest)
- **Return heading**: 19° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Nepal
- **Intercontinental**: North America → Asia
- **Time difference**: +13.75h (When it's 21:58 in Boundary, it's 11:43 in Kathmandu)
- **Elevation difference**: 1,450 ft (KTM is higher than BYA)

## Airports

### [Boundary Airport (BYA)](https://www.flightduration.online/airport/bya-boundary-boundary-airport/1ef266df-11f9-6a8e-ae68-06bb2780ed98)

- City: Boundary, United States
- ICAO: KBYA
- Timezone: America/Anchorage
- Coordinates: 64.080000, -141.110000
- Elevation: 2,940 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 21:58 in Boundary, it's 11:43 in Kathmandu.
With a 13.75-hour time difference, expect significant jet lag.

## Related

- [Boundary Airport (BYA)](https://www.flightduration.online/airport/bya-boundary-boundary-airport/1ef266df-11f9-6a8e-ae68-06bb2780ed98)
- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Flight duration calculator](/#calculator)