The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Siguanea Airport (SZJ) in Isla de la Juventud, Cuba is 14,387 kilometers (8,940 miles / 7,768 nautical miles). The estimated flight time for this route is approximately 18h, flying north northwest at a heading of 346°.

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

Time zone information: When it's 00:56 in Kathmandu, it's 14:11 in Isla de la Juventud. With a 10.75-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 4,351 feet between the two airports. Siguanea Airport sits lower than Tribhuvan International Airport.

The return flight from Isla de la Juventud (SZJ) to Kathmandu (KTM) follows a heading of 13° (north northeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Tribhuvan International Airport (KTM) and Siguanea Airport (SZJ) detail pages, or use our flight duration calculator to compare other routes.