The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Ponciano Arriaga International Airport (SLP) in San Luis Potosi, Mexico is 14,420 kilometers (8,960 miles / 7,786 nautical miles). The estimated flight time for this route is approximately 18h, flying north at a heading of 8°.

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 Mexico. 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 12:53 in Kathmandu, it's 01:08 in San Luis Potosi. With a 11.75-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 1,645 feet between the two airports. Ponciano Arriaga International Airport sits higher than Tribhuvan International Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from San Luis Potosi (SLP) to Kathmandu (KTM) follows a heading of 353° (north). 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 Ponciano Arriaga International Airport (SLP) detail pages, or use our flight duration calculator to compare other routes.