The flight distance from Chachoan Airport (ATF) in Ambato, Ecuador to Tribhuvan International Airport (KTM) in Kathmandu, Nepal is 16,609 kilometers (10,320 miles / 8,968 nautical miles). The estimated flight time for this route is approximately 21h, flying north northeast at a heading of 29°.

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 Ecuador with Nepal. It is an intercontinental flight between South America and Asia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 04:50 in Ambato, it's 15:35 in Kathmandu. With a 10.75-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 4,112 feet between the two airports. Tribhuvan International Airport sits lower than Chachoan Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Kathmandu (KTM) to Ambato (ATF) follows a heading of 327° (north northwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Chachoan Airport (ATF) and Tribhuvan International Airport (KTM) detail pages, or use our flight duration calculator to compare other routes.