The flight distance from Udorn Air Base (BAO) in Ban Mak Khaen, Thailand to Tribhuvan International Airport (KTM) in Kathmandu, Nepal is 2,123 kilometers (1,319 miles / 1,146 nautical miles). The estimated flight time for this route is approximately 3h, flying northwest at a heading of 306°.

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

Time zone information: When it's 12:29 in Ban Mak Khaen, it's 11:14 in Kathmandu.

There is a significant elevation difference of 4,390 feet between the two airports. Tribhuvan International Airport sits higher than Udorn Air Base.

The return flight from Kathmandu (KTM) to Ban Mak Khaen (BAO) follows a heading of 119° (east southeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Udorn Air Base (BAO) and Tribhuvan International Airport (KTM) detail pages, or use our flight duration calculator to compare other routes.