The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Las Termas Airport (RHD) in Rio Hondo, Argentina is 17,092 kilometers (10,621 miles / 9,229 nautical miles). The estimated flight time for this route is approximately 21h, flying west at a heading of 263°.

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 16:58 in Kathmandu, it's 08:13 in Rio Hondo. 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 4,120 feet between the two airports. Las Termas Airport sits lower than Tribhuvan International Airport.

The return flight from Rio Hondo (RHD) to Kathmandu (KTM) follows a heading of 83° (east). 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 Termas Airport (RHD) detail pages, or use our flight duration calculator to compare other routes.