The flight distance from Chiang Rai International Airport (CEI) in Chiang Rai, Thailand to Tribhuvan International Airport (KTM) in Kathmandu, Nepal is 1,708 kilometers (1,061 miles / 922 nautical miles). The estimated flight time for this route is approximately 3h, flying west northwest at a heading of 303°.

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 06:46 in Chiang Rai, it's 05:31 in Kathmandu.

There is a significant elevation difference of 3,110 feet between the two airports. Tribhuvan International Airport sits higher than Chiang Rai International Airport.

The return flight from Kathmandu (KTM) to Chiang Rai (CEI) follows a heading of 117° (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 Chiang Rai International Airport (CEI) and Tribhuvan International Airport (KTM) detail pages, or use our flight duration calculator to compare other routes.