The flight distance from Grants-Milan Municipal Airport (GNT) in Grants, United States to O. R. Tambo International Airport (JNB) in Johannesburg, South Africa is 15,737 kilometers (9,778 miles / 8,497 nautical miles). The estimated flight time for this route is approximately 20h, flying east at a heading of 89°.

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.

This is an international route connecting United States with South Africa. It is an intercontinental flight between North America and Africa. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 02:47 in Grants, it's 11:47 in Johannesburg. With a 9-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

The return flight from Johannesburg (JNB) to Grants (GNT) follows a heading of 294° (west northwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Grants-Milan Municipal Airport (GNT) and O. R. Tambo International Airport (JNB) detail pages, or use our flight duration calculator to compare other routes.