The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Siena / Ampugnano Airport (SAY) in Siena, Italy is 6,707 kilometers (4,167 miles / 3,621 nautical miles). The estimated flight time for this route is approximately 9h, flying northwest at a heading of 306°.

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

This is an international route connecting Nepal with Italy. It is an intercontinental flight between Asia and Europe. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 15:41 in Kathmandu, it's 10:56 in Siena. The 4.75-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 3,756 feet between the two airports. Siena / Ampugnano Airport sits lower than Tribhuvan International Airport.

The return flight from Siena (SAY) to Kathmandu (KTM) follows a heading of 79° (east northeast). 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 Siena / Ampugnano Airport (SAY) detail pages, or use our flight duration calculator to compare other routes.