The flight distance from Tribhuvan International Airport (KTM) in Kathmandu, Nepal to Orange Airport (OAG) in Orange, Australia is 9,555 kilometers (5,937 miles / 5,159 nautical miles). The estimated flight time for this route is approximately 12h, flying southeast at a heading of 131°.

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

Time zone information: When it's 17:44 in Kathmandu, it's 22:59 in Orange. The 5.25-hour time difference may cause some jet lag. Most travelers adjust within a day or two.

There is a significant elevation difference of 1,275 feet between the two airports. Orange Airport sits lower than Tribhuvan International Airport.

The return flight from Orange (OAG) to Kathmandu (KTM) follows a heading of 307° (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 Orange Airport (OAG) detail pages, or use our flight duration calculator to compare other routes.