The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Canoas Airport (QNS) in Porto Alegre, Brazil is 15,795 kilometers (9,815 miles / 8,529 nautical miles). The estimated flight time for this route is approximately 20h, flying west southwest at a heading of 256°.

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 Brazil. It is an intercontinental flight between Asia and South America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 15:08 in Kathmandu, it's 06:23 in Porto Alegre. With a 8.75-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 4,364 feet between the two airports. Canoas Airport sits lower than Tribhuvan International Airport.

The return flight from Porto Alegre (QNS) to Kathmandu (KTM) follows a heading of 82° (east). 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 Canoas Airport (QNS) detail pages, or use our flight duration calculator to compare other routes.