The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Santa Maria Pub/Capt G Allan Hancock Field (SMX) in Santa Maria, United States is 12,544 kilometers (7,795 miles / 6,773 nautical miles). The estimated flight time for this route is approximately 16h, flying north northeast at a heading of 23°.

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 United States. 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 18:00 in Kathmandu, it's 04:15 in Santa Maria. With a 13.75-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 4,129 feet between the two airports. Santa Maria Pub/Capt G Allan Hancock Field sits lower than Tribhuvan International Airport.

The return flight from Santa Maria (SMX) to Kathmandu (KTM) follows a heading of 335° (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 Tribhuvan International Airport (KTM) and Santa Maria Pub/Capt G Allan Hancock Field (SMX) detail pages, or use our flight duration calculator to compare other routes.