The flight distance from Netaji Subhash Chandra Bose International Airport (CCU) in Kolkata, India to Almirante Marco Andres Zar Airport (REL) in Rawson, Argentina is 16,689 kilometers (10,370 miles / 9,011 nautical miles). The estimated flight time for this route is approximately 21h, flying southwest at a heading of 220°.

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

Time zone information: When it's 20:27 in Kolkata, it's 11:57 in Rawson. With a 8.5-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 Rawson (REL) to Kolkata (CCU) follows a heading of 125° (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 Netaji Subhash Chandra Bose International Airport (CCU) and Almirante Marco Andres Zar Airport (REL) detail pages, or use our flight duration calculator to compare other routes.