The flight distance from Niagara Falls International Airport (IAG) in Niagara Falls, United States to Tribhuvan International Airport (KTM) in Kathmandu, Nepal is 11,980 kilometers (7,444 miles / 6,468 nautical miles). The estimated flight time for this route is approximately 15h, flying north northeast at a heading of 15°.

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

Time zone information: When it's 07:03 in Niagara Falls, it's 17:48 in Kathmandu. With a 10.75-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 3,798 feet between the two airports. Tribhuvan International Airport sits higher than Niagara Falls International Airport.

The return flight from Kathmandu (KTM) to Niagara Falls (IAG) follows a heading of 348° (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 Niagara Falls International Airport (IAG) and Tribhuvan International Airport (KTM) detail pages, or use our flight duration calculator to compare other routes.