The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Tres Arroyos Airport (OYO) in Tres Arroyos, Argentina is 16,627 kilometers (10,332 miles / 8,978 nautical miles). The estimated flight time for this route is approximately 21h, flying west southwest at a heading of 241°.

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 15:59 in Kathmandu, it's 07:14 in Tres Arroyos. 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 3,990 feet between the two airports. Tres Arroyos Airport sits lower than Tribhuvan International Airport.

The return flight from Tres Arroyos (OYO) to Kathmandu (KTM) follows a heading of 100° (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 Tres Arroyos Airport (OYO) detail pages, or use our flight duration calculator to compare other routes.