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

> 11,400 km · estimated flight time 14h · Ultra-long-haul route.

## Summary

- **Distance**: 11,400 km / 7,084 mi / 6,156 nm
- **Estimated flight time**: 14h
- **Heading**: 20° (north northeast)
- **Return heading**: 335° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Nepal) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -12.75h (When it's 10:02 in Kathmandu, it's 21:17 in Portland)
- **Elevation difference**: 4,351 ft (TTD is lower than KTM)

## Airports

### [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

### [Portland-Troutdale Airport (TTD)](https://www.flightduration.online/airport/ttd-portland-portland-troutdale-airport/1ef266df-3c42-64c6-9e3a-06bb2780ed98)

- City: Portland, United States
- ICAO: KTTD
- Timezone: America/Los_Angeles
- Coordinates: 45.550000, -122.400000
- Elevation: 39 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 10:02 in Kathmandu, it's 21:17 in Portland.
With a 12.75-hour time difference, expect significant jet lag.

## Related

- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Portland-Troutdale Airport (TTD)](https://www.flightduration.online/airport/ttd-portland-portland-troutdale-airport/1ef266df-3c42-64c6-9e3a-06bb2780ed98)
- [Flight duration calculator](/#calculator)