# Distance from Seosan (HMY) to Johannesburg (JNB)

> 12,398 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,398 km / 7,704 mi / 6,694 nm
- **Estimated flight time**: 16h
- **Heading**: 253° (west southwest)
- **Return heading**: 59° (east northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (South Korea) → South Africa
- **Intercontinental**: Asia → Africa
- **Time difference**: -7h (When it's 17:15 in Seosan, it's 10:15 in Johannesburg)
- **Elevation difference**: 5,519 ft (JNB is higher than HMY)

## Airports

### [Seosan Air Base (HMY)](https://www.flightduration.online/airport/hmy-seosan-seosan-air-base/1ef266df-8e37-6862-80fa-06bb2780ed98)

- City: Seosan, South Korea
- ICAO: RKTP
- Timezone: Asia/Seoul
- Coordinates: 36.700000, 126.490000
- Elevation: 39 ft

### [O. R. Tambo International Airport (JNB)](https://www.flightduration.online/airport/jnb-johannesburg-o-r-tambo-international-airport/1ef266de-d3b0-6ec6-b1f2-06bb2780ed98)

- City: Johannesburg, South Africa
- ICAO: FAOR
- Timezone: Africa/Johannesburg
- Coordinates: -26.130000, 28.240000
- Elevation: 5,558 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 17:15 in Seosan, it's 10:15 in Johannesburg.
With a 7-hour time difference, expect significant jet lag.

## Related

- [Seosan Air Base (HMY)](https://www.flightduration.online/airport/hmy-seosan-seosan-air-base/1ef266df-8e37-6862-80fa-06bb2780ed98)
- [O. R. Tambo International Airport (JNB)](https://www.flightduration.online/airport/jnb-johannesburg-o-r-tambo-international-airport/1ef266de-d3b0-6ec6-b1f2-06bb2780ed98)
- [Flight duration calculator](/#calculator)