The flight distance from O. R. Tambo International Airport (JNB) in Johannesburg, South Africa to Union Island International Airport (UNI) in Union Island, Saint Vincent is 10,586 kilometers (6,578 miles / 5,716 nautical miles). The estimated flight time for this route is approximately 13h, flying west northwest at a heading of 281°.

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 Saint Vincent. It is an intercontinental flight between Africa and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 05:54 in Johannesburg, it's 23:54 in Union Island. With a 6-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 5,542 feet between the two airports. Union Island 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 Union Island (UNI) to Johannesburg (JNB) follows a heading of 116° (east southeast). 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 Union Island International Airport (UNI) detail pages, or use our flight duration calculator to compare other routes.