The flight distance from Adelaide International Airport (ADL) in Adelaide, Australia to Smith Field (SLG) in Siloam Springs, United States is 15,279 kilometers (9,494 miles / 8,250 nautical miles). The estimated flight time for this route is approximately 19h, flying east northeast at a heading of 72°.

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 Australia with United States. It is an intercontinental flight between Oceania and North America. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.

Time zone information: When it's 20:58 in Adelaide, it's 04:28 in Siloam Springs. With a 16.5-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 1,171 feet between the two airports. Smith Field sits higher than Adelaide International Airport.

The return flight from Siloam Springs (SLG) to Adelaide (ADL) follows a heading of 255° (west southwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.

For more information about these airports, visit the Adelaide International Airport (ADL) and Smith Field (SLG) detail pages, or use our flight duration calculator to compare other routes.