The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Porto Nacional Airport (PNB) in Porto Nacional, Brazil is 14,843 kilometers (9,223 miles / 8,014 nautical miles). The estimated flight time for this route is approximately 18h, flying west northwest at a heading of 282°.

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 06:33 in Kathmandu, it's 21:48 in Porto Nacional. 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 3,520 feet between the two airports. Porto Nacional Airport sits lower than Tribhuvan International Airport.

The return flight from Porto Nacional (PNB) to Kathmandu (KTM) follows a heading of 62° (east 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 Tribhuvan International Airport (KTM) and Porto Nacional Airport (PNB) detail pages, or use our flight duration calculator to compare other routes.