The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Tonghua Sanyuanpu Airport (TNH) in Tonghua, China is 3,970 kilometers (2,467 miles / 2,143 nautical miles). The estimated flight time for this route is approximately 6h, flying northeast at a heading of 55°.

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

Time zone information: When it's 14:57 in Kathmandu, it's 17:12 in Tonghua.

There is a significant elevation difference of 3,190 feet between the two airports. Tonghua Sanyuanpu Airport sits lower than Tribhuvan International Airport.

The return flight from Tonghua (TNH) to Kathmandu (KTM) follows a heading of 259° (west). 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 Tonghua Sanyuanpu Airport (TNH) detail pages, or use our flight duration calculator to compare other routes.