The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Nakhon Si Thammarat Airport (NST) in Nakhon Si Thammarat, Thailand is 2,623 kilometers (1,630 miles / 1,417 nautical miles). The estimated flight time for this route is approximately 4h, flying southeast at a heading of 142°.

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 Thailand. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 04:36 in Kathmandu, it's 05:51 in Nakhon Si Thammarat.

There is a significant elevation difference of 4,377 feet between the two airports. Nakhon Si Thammarat Airport sits lower than Tribhuvan International Airport.

The return flight from Nakhon Si Thammarat (NST) to Kathmandu (KTM) follows a heading of 326° (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 Tribhuvan International Airport (KTM) and Nakhon Si Thammarat Airport (NST) detail pages, or use our flight duration calculator to compare other routes.