The flight distance from O. R. Tambo International Airport (JNB) in Johannesburg, South Africa to Siem Reap Angkor International Airport (SAI) in Siem Reap, Cambodia is 9,307 kilometers (5,783 miles / 5,025 nautical miles). The estimated flight time for this route is approximately 12h, flying east northeast at a heading of 72°.

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 South Africa with Cambodia. It is an intercontinental flight between Africa and Asia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 07:37 in Johannesburg, it's 12:37 in Siem Reap. The 5-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 5,367 feet between the two airports. Siem Reap Angkor International Airport sits lower than O. R. Tambo International Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Siem Reap (SAI) to Johannesburg (JNB) follows a heading of 241° (west southwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the O. R. Tambo International Airport (JNB) and Siem Reap Angkor International Airport (SAI) detail pages, or use our flight duration calculator to compare other routes.