The flight distance from Arenal Airport (FON) in La Fortuna/San Carlos, Costa Rica to Tribhuvan International Airport (KTM) in Kathmandu, Nepal is 15,635 kilometers (9,715 miles / 8,442 nautical miles). The estimated flight time for this route is approximately 19h, flying north northeast at a heading of 14°.

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

Time zone information: When it's 05:02 in La Fortuna/San Carlos, it's 16:47 in Kathmandu. With a 11.75-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 4,048 feet between the two airports. Tribhuvan International Airport sits higher than Arenal Airport.

The return flight from Kathmandu (KTM) to La Fortuna/San Carlos (FON) follows a heading of 344° (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 Arenal Airport (FON) and Tribhuvan International Airport (KTM) detail pages, or use our flight duration calculator to compare other routes.