The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Ubon Ratchathani Airport (UBP) in Ubon Ratchathani, Thailand is 2,442 kilometers (1,517 miles / 1,319 nautical miles). The estimated flight time for this route is approximately 4h, flying east southeast at a heading of 121°.

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 14:52 in Kathmandu, it's 16:07 in Ubon Ratchathani.

There is a significant elevation difference of 3,984 feet between the two airports. Ubon Ratchathani Airport sits lower than Tribhuvan International Airport.

The return flight from Ubon Ratchathani (UBP) to Kathmandu (KTM) follows a heading of 308° (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 Ubon Ratchathani Airport (UBP) detail pages, or use our flight duration calculator to compare other routes.