The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Semnan Airport (SNX) in Semnan, Iran is 3,126 kilometers (1,942 miles / 1,688 nautical miles). The estimated flight time for this route is approximately 5h, flying west northwest at a heading of 294°.

This is a medium-haul route that may be operated by either narrow-body or wide-body aircraft depending on demand. Passengers can expect a meal service on most carriers.

This is an international route connecting Nepal with Iran. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 20:37 in Kathmandu, it's 18:22 in Semnan.

The return flight from Semnan (SNX) to Kathmandu (KTM) follows a heading of 97° (east). 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 Semnan Airport (SNX) detail pages, or use our flight duration calculator to compare other routes.