The flight distance from Adelaide International Airport (ADL) in Adelaide, Australia to Roscommon County/Blodgett Memorial Airport (HTL) in Houghton Lake, United States is 16,217 kilometers (10,077 miles / 8,756 nautical miles). The estimated flight time for this route is approximately 20h, flying east northeast at a heading of 61°.

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 12:57 in Adelaide, it's 21:27 in Houghton Lake. With a 15.5-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 1,130 feet between the two airports. Roscommon County/Blodgett Memorial Airport sits higher than Adelaide International Airport.

The return flight from Houghton Lake (HTL) to Adelaide (ADL) follows a heading of 271° (west). 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 Roscommon County/Blodgett Memorial Airport (HTL) detail pages, or use our flight duration calculator to compare other routes.