The flight distance from Adelaide International Airport (ADL) in Adelaide, Australia to Centennial Airport (APA) in Denver, United States is 14,499 kilometers (9,009 miles / 7,829 nautical miles). The estimated flight time for this route is approximately 18h, flying east northeast at a heading of 65°.

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 22:42 in Adelaide, it's 05:12 in Denver. With a 17.5-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 5,865 feet between the two airports. Centennial Airport sits higher than Adelaide International Airport. Travelers arriving at the higher-elevation airport should be aware of potential altitude effects.

The return flight from Denver (APA) to Adelaide (ADL) follows a heading of 254° (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 Centennial Airport (APA) detail pages, or use our flight duration calculator to compare other routes.