The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to U-Tapao International Airport (UTP) in Rayong, Thailand is 2,330 kilometers (1,448 miles / 1,258 nautical miles). The estimated flight time for this route is approximately 4h, flying southeast at a heading of 133°.

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 20:28 in Kathmandu, it's 21:43 in Rayong.

There is a significant elevation difference of 4,348 feet between the two airports. U-Tapao International Airport sits lower than Tribhuvan International Airport.

The return flight from Rayong (UTP) to Kathmandu (KTM) follows a heading of 318° (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 U-Tapao International Airport (UTP) detail pages, or use our flight duration calculator to compare other routes.