The flight distance from Adelaide International Airport (ADL) in Adelaide, Australia to Great Falls International Airport (GTF) in Great Falls, United States is 14,208 kilometers (8,829 miles / 7,672 nautical miles). The estimated flight time for this route is approximately 18h, flying northeast at a heading of 53°.

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 21:10 in Adelaide, it's 05:40 in Great Falls. 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 3,660 feet between the two airports. Great Falls International Airport sits higher than Adelaide International Airport.

The return flight from Great Falls (GTF) to Adelaide (ADL) follows a heading of 257° (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 Great Falls International Airport (GTF) detail pages, or use our flight duration calculator to compare other routes.