The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Santa Maria Airport (SMA) in Vila do Porto, Portugal is 9,807 kilometers (6,094 miles / 5,295 nautical miles). The estimated flight time for this route is approximately 13h, flying northwest at a heading of 312°.

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

Time zone information: When it's 03:49 in Kathmandu, it's 21:04 in Vila do Porto. With a 6.75-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 4,082 feet between the two airports. Santa Maria Airport sits lower than Tribhuvan International Airport.

The return flight from Vila do Porto (SMA) to Kathmandu (KTM) follows a heading of 56° (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 Santa Maria Airport (SMA) detail pages, or use our flight duration calculator to compare other routes.