Complex sentence: The former Qantas Terminal at Canberra Airport, located on the western side of the building, has now been closed and all Qantas, QantasLink and Brindabella Airlines flights and related services such as lounges now operate from the new Southern Concourse Terminal.
Split into simpler sentences: The former Qantas Terminal at Canberra Airport was located on the western side of the building. All Qantas, QantasLink and Brindabella Airlines flights and related services such as lounges now operate from the new Southern Concourse Terminal.