# Distance from Kathmandu (KTM) to Norman (OUN)

> 13,009 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 13,009 km / 8,083 mi / 7,024 nm
- **Estimated flight time**: 16h
- **Heading**: 3° (north)
- **Return heading**: 357° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (Nepal) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -10.75h (When it's 00:28 in Kathmandu, it's 13:43 in Norman)
- **Elevation difference**: 3,208 ft (OUN is lower than KTM)

## Airports

### [Tribhuvan International Airport (KTM)](https://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

### [University Of Oklahoma Westheimer Airport (OUN)](https://flightduration.online/airport/oun-norman-university-of-oklahoma-westheimer-airport/1ef266df-315d-6e70-a657-06bb2780ed98)

- City: Norman, United States
- ICAO: KOUN
- Timezone: America/Chicago
- Coordinates: 35.250000, -97.470000
- Elevation: 1,182 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 00:28 in Kathmandu, it's 13:43 in Norman.
With a 10.75-hour time difference, expect significant jet lag.

## Related

- [Tribhuvan International Airport (KTM)](https://flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [University Of Oklahoma Westheimer Airport (OUN)](https://flightduration.online/airport/oun-norman-university-of-oklahoma-westheimer-airport/1ef266df-315d-6e70-a657-06bb2780ed98)
- [Flight duration calculator](/#calculator)