The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Las Heras Airport (LHS) in Las Heras, Argentina is 16,948 kilometers (10,531 miles / 9,151 nautical miles). The estimated flight time for this route is approximately 21h, flying southwest at a heading of 220°.

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 Argentina. 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 08:25 in Kathmandu, it's 23:40 in Las Heras. With a 8.75-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 3,308 feet between the two airports. Las Heras Airport sits lower than Tribhuvan International Airport.

The return flight from Las Heras (LHS) to Kathmandu (KTM) follows a heading of 124° (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 Las Heras Airport (LHS) detail pages, or use our flight duration calculator to compare other routes.