The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Santa Monica Municipal Airport (SMO) in Santa Monica, United States is 12,708 kilometers (7,897 miles / 6,862 nautical miles). The estimated flight time for this route is approximately 16h, flying north northeast at a heading of 22°.

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 11:11 in Kathmandu, it's 21:26 in Santa Monica. 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 4,220 feet between the two airports. Santa Monica Municipal Airport sits lower than Tribhuvan International Airport.

The return flight from Santa Monica (SMO) to Kathmandu (KTM) follows a heading of 337° (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 Monica Municipal Airport (SMO) detail pages, or use our flight duration calculator to compare other routes.