The flight distance from Heihe Airport (HEK) in Heihe, China to Tribhuvan International Airport (KTM) in Kathmandu, Nepal is 4,320 kilometers (2,685 miles / 2,333 nautical miles). The estimated flight time for this route is approximately 6h, flying west southwest at a heading of 251°.

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

This is an international route connecting China with Nepal. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 12:29 in Heihe, it's 10:14 in Kathmandu.

There is a significant elevation difference of 4,140 feet between the two airports. Tribhuvan International Airport sits lower than Heihe Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Kathmandu (KTM) to Heihe (HEK) follows a heading of 43° (northeast). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

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