The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Hermanos Serdan International Airport (PBC) in Puebla, Mexico is 14,789 kilometers (9,189 miles / 7,985 nautical miles). The estimated flight time for this route is approximately 18h, flying north at a heading of 5°.

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 12:05 in Kathmandu, it's 00:20 in Puebla. 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 2,971 feet between the two airports. Hermanos Serdan 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 Puebla (PBC) to Kathmandu (KTM) follows a heading of 355° (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 Hermanos Serdan International Airport (PBC) detail pages, or use our flight duration calculator to compare other routes.