Seoul to Johannesburg
15h 51m The flight from Incheon International Airport (ICN) to O.R. Tambo International Airport (JNB) covers 12,420 km (7,717 miles) and takes approximately 15h 51m gate to gate for a typical jet.
The route heads west on an initial great-circle bearing of 253°, passing near 8.6° N, 73.3° E at its midpoint.
The route
The great-circle path — the shortest line between the two airports across the curve of the earth. On a flat map it looks bent; on a globe it is straight.
Flight time at different cruise speeds
Aircraft type, winds and routing all move the real number. This is the same distance flown at different speeds, plus the 25-minute ground and climb allowance.
| Typical of | Cruise speed | Airborne | Gate to gate |
|---|---|---|---|
| Turboprop / regional | 550 km/h | 22h 35m | 23h 00m |
| Narrowbody jet (A320, 737) | 780 km/h | 15h 55m | 16h 21m |
| Widebody jet (777, 787, A350) | 900 km/h | 13h 48m | 14h 13m |
| Private jet (Gulfstream) | 850 km/h | 14h 37m | 15h 02m |
Headwinds on an eastbound long-haul routinely add 30–60 minutes; the same route westbound can be quicker. Airlines publish schedules with padding built in.
Both airports
| ICN | JNB | |
|---|---|---|
| Airport | Incheon International Airport | O.R. Tambo International Airport |
| City | Seoul | Johannesburg |
| Country | South Korea | South Africa |
| ICAO | RKSI | FAOR |
| Coordinates | 37.4691, 126.451 | -26.1401, 28.2468 |
| Elevation | 23 ft | 5,558 ft |
Questions
How long is the flight from Seoul to Johannesburg?
A non-stop flight from Seoul (ICN) to Johannesburg (JNB) takes about 15h 51m. The great-circle distance is 12,420 km (7,717 miles, 6,706 nautical miles), flying west on an initial bearing of 253°.
How far is Seoul from Johannesburg?
12,420 kilometres in a straight line over the earth's surface — 7,717 miles or 6,706 nautical miles. Actual flown distance is usually 2–5% longer because aircraft follow airways, avoid weather and route around restricted airspace.
Is there a non-stop flight between ICN and JNB?
This page calculates the direct-line time and distance; it does not track airline schedules. At 12,420 km the route is within reach of long-range widebodies, though not every city pair is served non-stop. Check an airline or booking site for what is actually scheduled.
What should I expect on a 15h 51m flight?
Anything past six hours is a long-haul flight: expect at least one meal service, a significant time-zone shift, and enough sitting that circulation and hydration start to matter. Cabin altitude, dry air and disrupted sleep do more damage to a training routine than the flight itself.
Airport coordinates from OurAirports (public domain). Distance is a great-circle calculation; flight time uses the model described on the method page. Flight times are great-circle estimates for planning only — always check the airline's published schedule.