The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Mehrabad International Airport (THR) in Tehran, Iran is 3,323 kilometers (2,065 miles / 1,794 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 08:00 in Kathmandu, it's 05:45 in Tehran.

The return flight from Tehran (THR) to Kathmandu (KTM) follows a heading of 96° (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 Mehrabad International Airport (THR) detail pages, or use our flight duration calculator to compare other routes.