The flight distance from Nantucket Memorial Airport (ACK) in Nantucket, United States to Cape Town International Airport (CPT) in Cape Town, South Africa is 12,317 kilometers (7,653 miles / 6,650 nautical miles). The estimated flight time for this route is approximately 15h, flying east southeast at a heading of 118°.

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 03:41 in Nantucket, it's 10:41 in Cape Town. With a 7-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 Cape Town (CPT) to Nantucket (ACK) follows a heading of 307° (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 Nantucket Memorial Airport (ACK) and Cape Town International Airport (CPT) detail pages, or use our flight duration calculator to compare other routes.