The flight distance from Dehradun Airport (DED) in Dehradun, India to Tribhuvan International Airport (KTM) in Kathmandu, Nepal is 751 kilometers (467 miles / 406 nautical miles). The estimated flight time for this route is approximately 2h, flying east southeast at a heading of 110°.

This is a short-haul route typically served by narrow-body aircraft such as the Boeing 737 or Airbus A320 family. In-flight service is usually limited to drinks and light snacks.

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

Time zone information: When it's 16:46 in Dehradun, it's 17:01 in Kathmandu.

There is a significant elevation difference of 2,559 feet between the two airports. Tribhuvan International Airport sits higher than Dehradun Airport.

The return flight from Kathmandu (KTM) to Dehradun (DED) follows a heading of 293° (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 Dehradun Airport (DED) and Tribhuvan International Airport (KTM) detail pages, or use our flight duration calculator to compare other routes.