The flight distance from Allen Army Air Field (BIG) in Delta Junction Ft Greely, United States to O. R. Tambo International Airport (JNB) in Johannesburg, South Africa is 15,782 kilometers (9,806 miles / 8,521 nautical miles). The estimated flight time for this route is approximately 20h, flying north at a heading of 9°.

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 10:33 in Delta Junction Ft Greely, it's 20:33 in Johannesburg. With a 10-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

There is a significant elevation difference of 4,273 feet between the two airports. O. R. Tambo International Airport sits higher than Allen Army Air Field. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Johannesburg (JNB) to Delta Junction Ft Greely (BIG) follows a heading of 356° (north). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Allen Army Air Field (BIG) and O. R. Tambo International Airport (JNB) detail pages, or use our flight duration calculator to compare other routes.