The flight distance from Imam Khomeini International Airport (IKA) in Tehran, Iran to Tribhuvan International Airport (KTM) in Kathmandu, Nepal is 3,335 kilometers (2,072 miles / 1,801 nautical miles). The estimated flight time for this route is approximately 5h, flying east at a heading of 95°.

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 Iran with Nepal. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 23:50 in Tehran, it's 02:05 in Kathmandu.

There is a significant elevation difference of 1,085 feet between the two airports. Tribhuvan International Airport sits higher than Imam Khomeini International Airport.

The return flight from Kathmandu (KTM) to Tehran (IKA) follows a heading of 294° (west 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 Imam Khomeini International Airport (IKA) and Tribhuvan International Airport (KTM) detail pages, or use our flight duration calculator to compare other routes.