The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Alto Palena Airport (WAP) in Alto Palena, Chile is 17,314 kilometers (10,758 miles / 9,349 nautical miles). The estimated flight time for this route is approximately 21h, flying southwest at a heading of 223°.

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 Chile. 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 19:39 in Kathmandu, it's 09:54 in Alto Palena. 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 3,596 feet between the two airports. Alto Palena Airport sits lower than Tribhuvan International Airport.

The return flight from Alto Palena (WAP) to Kathmandu (KTM) follows a heading of 123° (east 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 Tribhuvan International Airport (KTM) and Alto Palena Airport (WAP) detail pages, or use our flight duration calculator to compare other routes.