The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Siuna (SIU) in Siuna, Nicaragua is 15,287 kilometers (9,499 miles / 8,254 nautical miles). The estimated flight time for this route is approximately 19h, flying north northwest at a heading of 346°.

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

Time zone information: When it's 11:17 in Kathmandu, it's 23:32 in Siuna. 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 3,784 feet between the two airports. Siuna sits lower than Tribhuvan International Airport.

The return flight from Siuna (SIU) to Kathmandu (KTM) follows a heading of 13° (north northeast). 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 Siuna (SIU) detail pages, or use our flight duration calculator to compare other routes.