The flight distance from St Gallen Altenrhein Airport (ACH) in Altenrhein, Switzerland to Tribhuvan International Airport (KTM) in Kathmandu, Nepal is 6,749 kilometers (4,194 miles / 3,644 nautical miles). The estimated flight time for this route is approximately 9h, flying east at a heading of 80°.

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 Switzerland with Nepal. It is an intercontinental flight between Europe and Asia. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 23:21 in Altenrhein, it's 03:06 in Kathmandu. The 3.75-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 3,084 feet between the two airports. Tribhuvan International Airport sits higher than St Gallen Altenrhein Airport.

The return flight from Kathmandu (KTM) to Altenrhein (ACH) follows a heading of 311° (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 St Gallen Altenrhein Airport (ACH) and Tribhuvan International Airport (KTM) detail pages, or use our flight duration calculator to compare other routes.