Australia's Chinook transport helicopters in Afghanistan are heading home.

During seven years and 11 rotations, the Chinooks flew more than 6000 hours, transported almost 40,000 personnel and delivered more than 3600 tonnes of cargo.

Each rotation included two Chinooks which operated through the Afghan summer months as part of the US-led Regional Command South Aviation Task Force.

One Chinook was lost in a crash in Zabul province in May 2011 which killed Lieutenant Marcus Case.

In a ceremony at Kandahar Airfield on Saturday, the unit's commanding officer Lieutenant Colonel James Brown acknowledged the achievements of the final rotation who flew 780 flying hours in 90 missions between April and September.

"Australian Rotary Wing Group detachments have made a significant contribution to the International Security Assistance Force (ISAF) every year since 2006," he said in a statement.

Commander of Australian forces in the Middle East Major General Michael Crane said the unit operated steadfastly alongside their US allies over the past eight years.

Over the deployments, numerous decorations have been awarded to Australian aircrew, including the Medal for Gallantry, Distinguished Service Medal, the Meritorious Unit Citation for the 5th Aviation Regiment, several US Bronze Stars and multiple US Air Medals.

The aircraft will return home to Australia aboard RAAF C-17 transport aircraft in the coming month.