# Distance from Kathmandu (KTM) to Ulsan (USN)

> 4,220 km · estimated flight time 6h · Long-haul route.

## Summary

- **Distance**: 4,220 km / 2,622 mi / 2,279 nm
- **Estimated flight time**: 6h
- **Heading**: 67° (east northeast)
- **Return heading**: 271° (west)
- **Classification**: Long-haul
- **Type**: International (Nepal) → South Korea
- **Time difference**: +3.25h (When it's 19:49 in Kathmandu, it's 23:04 in Ulsan)
- **Elevation difference**: 4,345 ft (USN 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

### [Ulsan Airport (USN)](https://www.flightduration.online/airport/usn-ulsan-ulsan-airport/1ef266df-8de2-6506-b034-06bb2780ed98)

- City: Ulsan, South Korea
- ICAO: RKPU
- Timezone: Asia/Seoul
- Coordinates: 35.590000, 129.350000
- Elevation: 45 ft

## Route notes

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

Time-zone information: When it's 19:49 in Kathmandu, it's 23:04 in Ulsan.
The 3.25-hour time difference may cause some jet lag.

## Related

- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Ulsan Airport (USN)](https://www.flightduration.online/airport/usn-ulsan-ulsan-airport/1ef266df-8de2-6506-b034-06bb2780ed98)
- [Flight duration calculator](/#calculator)