The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Southwest Wyoming Regional Airport (RKS) in Rock Springs, United States is 12,169 kilometers (7,561 miles / 6,571 nautical miles). The estimated flight time for this route is approximately 15h, flying north northeast at a heading of 11°.

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

This is an international route connecting Nepal with United States. It is an intercontinental flight between Asia and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 00:44 in Kathmandu, it's 11:59 in Rock Springs. With a 12.75-hour time difference, travelers should plan for significant jet lag. It typically takes one day per hour of time difference to fully adjust.

There is a significant elevation difference of 2,375 feet between the two airports. Southwest Wyoming Regional Airport sits higher than Tribhuvan International Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Rock Springs (RKS) to Kathmandu (KTM) follows a heading of 346° (north 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 Southwest Wyoming Regional Airport (RKS) detail pages, or use our flight duration calculator to compare other routes.