# Distance from Seoul (ICN) to Semonkong (SOK)

> 12,651 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,651 km / 7,861 mi / 6,831 nm
- **Estimated flight time**: 16h
- **Heading**: 250° (west southwest)
- **Return heading**: 59° (east northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (South Korea) → Lesotho
- **Intercontinental**: Asia → Africa
- **Time difference**: -7h (When it's 11:26 in Seoul, it's 04:26 in Semonkong)
- **Elevation difference**: 7,177 ft (SOK is higher than ICN)

## Airports

### [Incheon International Airport (ICN)](https://www.flightduration.online/airport/icn-seoul-incheon-international-airport/1ef266df-8e0e-6aac-85a0-06bb2780ed98)

- City: Seoul, South Korea
- ICAO: RKSI
- Timezone: Asia/Seoul
- Coordinates: 37.470000, 126.450000
- Elevation: 23 ft

### [Semonkong Airport (SOK)](https://www.flightduration.online/airport/sok-semonkong-semonkong-airport/1ef266de-e0a6-68c4-a1ee-06bb2780ed98)

- City: Semonkong, Lesotho
- ICAO: FXSM
- Timezone: Africa/Maseru
- Coordinates: -29.840000, 28.060000
- Elevation: 7,200 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 11:26 in Seoul, it's 04:26 in Semonkong.
With a 7-hour time difference, expect significant jet lag.

## Related

- [Incheon International Airport (ICN)](https://www.flightduration.online/airport/icn-seoul-incheon-international-airport/1ef266df-8e0e-6aac-85a0-06bb2780ed98)
- [Semonkong Airport (SOK)](https://www.flightduration.online/airport/sok-semonkong-semonkong-airport/1ef266de-e0a6-68c4-a1ee-06bb2780ed98)
- [Flight duration calculator](/#calculator)