The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Oiapoque Airport (OYK) in Oiapoque, Brazil is 14,239 kilometers (8,848 miles / 7,689 nautical miles). The estimated flight time for this route is approximately 18h, flying west northwest at a heading of 301°.

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 07:11 in Kathmandu, it's 22:26 in Oiapoque. 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 4,327 feet between the two airports. Oiapoque Airport sits lower than Tribhuvan International Airport.

The return flight from Oiapoque (OYK) to Kathmandu (KTM) follows a heading of 50° (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 Oiapoque Airport (OYK) detail pages, or use our flight duration calculator to compare other routes.