# Distance from Portland (HIO) to Kathmandu (KTM)

> 11,383 km · estimated flight time 14h · Ultra-long-haul route.

## Summary

- **Distance**: 11,383 km / 7,073 mi / 6,146 nm
- **Estimated flight time**: 14h
- **Heading**: 335° (north northwest)
- **Return heading**: 20° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Nepal
- **Intercontinental**: North America → Asia
- **Time difference**: +12.75h (When it's 22:10 in Portland, it's 10:55 in Kathmandu)
- **Elevation difference**: 4,182 ft (KTM is higher than HIO)

## Airports

### [Portland-Hillsboro Airport (HIO)](https://www.flightduration.online/airport/hio-portland-portland-hillsboro-airport/1ef266df-20b3-64b2-b8db-06bb2780ed98)

- City: Portland, United States
- ICAO: KHIO
- Timezone: America/Los_Angeles
- Coordinates: 45.540000, -122.950000
- Elevation: 208 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 22:10 in Portland, it's 10:55 in Kathmandu.
With a 12.75-hour time difference, expect significant jet lag.

## Related

- [Portland-Hillsboro Airport (HIO)](https://www.flightduration.online/airport/hio-portland-portland-hillsboro-airport/1ef266df-20b3-64b2-b8db-06bb2780ed98)
- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Flight duration calculator](/#calculator)