# Distance from Houston (EFD) to Kathmandu (KTM)

> 13,642 km · estimated flight time 17h · Ultra-long-haul route.

## Summary

- **Distance**: 13,642 km / 8,477 mi / 7,366 nm
- **Estimated flight time**: 17h
- **Heading**: 359° (north)
- **Return heading**: 1° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Nepal
- **Intercontinental**: North America → Asia
- **Time difference**: +10.75h (When it's 12:00 in Houston, it's 22:45 in Kathmandu)
- **Elevation difference**: 4,358 ft (KTM is higher than EFD)

## Airports

### [Ellington Airport (EFD)](https://www.flightduration.online/airport/efd-houston-ellington-airport/1ef266df-1967-6c26-9c9e-06bb2780ed98)

- City: Houston, United States
- ICAO: KEFD
- Timezone: America/Chicago
- Coordinates: 29.610000, -95.160000
- Elevation: 33 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 12:00 in Houston, it's 22:45 in Kathmandu.
With a 10.75-hour time difference, expect significant jet lag.

## Related

- [Ellington Airport (EFD)](https://www.flightduration.online/airport/efd-houston-ellington-airport/1ef266df-1967-6c26-9c9e-06bb2780ed98)
- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Flight duration calculator](/#calculator)