The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Princess Juliana International Airport (SXM) in Saint Martin, SX is 13,900 kilometers (8,637 miles / 7,505 nautical miles). The estimated flight time for this route is approximately 17h, flying northwest at a heading of 323°.

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 SX. 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 00:26 in Kathmandu, it's 14:41 in Saint Martin. With a 9.75-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 4,377 feet between the two airports. Princess Juliana International Airport sits lower than Tribhuvan International Airport.

The return flight from Saint Martin (SXM) to Kathmandu (KTM) follows a heading of 34° (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 Princess Juliana International Airport (SXM) detail pages, or use our flight duration calculator to compare other routes.