The flight distance from Hartsfield - Jackson Atlanta International Airport (ATL) in Atlanta, United States to Oecussi Airport (OEC) in Oecussi-Ambeno, Timor-Leste is 16,011 kilometers (9,949 miles / 8,645 nautical miles). The estimated flight time for this route is approximately 20h, flying northwest at a heading of 306°.

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 Timor-Leste. 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 21:59 in Atlanta, it's 10:59 in Oecussi-Ambeno. With a 13-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 1,026 feet between the two airports. Oecussi Airport sits lower than Hartsfield - Jackson Atlanta International Airport.

The return flight from Oecussi-Ambeno (OEC) to Atlanta (ATL) follows a heading of 43° (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 Hartsfield - Jackson Atlanta International Airport (ATL) and Oecussi Airport (OEC) detail pages, or use our flight duration calculator to compare other routes.