Australia’s competition regulator has outlined how parking and aeronautical revenues now sit at the heart of airport finances, using the latest monitoring data to map out who is earning what and where passengers feel the pinch most. The analysis focuses on the country’s four largest airports and looks at how their charges, investments and service levels have evolved over the 12 months to mid 2025.
Across those four airports, car parks delivered about $402m in operating profit in a single year, with one east coast hub emerging as the standout earner. That airport generated around $125m in profit from parking alone, helped by some of the steepest short stay “drive up” prices in the country, including around $25 for less than an hour. Other major gateways were not far behind, typically keeping around 60% to 70% in profit from every dollar charged for parking. For longer stays of 2 to 3 days, the busiest international gateway recorded top tier prices of roughly $85, slightly ahead of a southern capital city airport that charged close to $80 over the same period.
Behind those headline figures sits a wave of infrastructure spending. The four major airports increased aeronautical investment by about 43% to $1.5bn, funding large projects such as new or expanded runways, upgraded terminals and overhauled baggage and check in facilities. One southern airport led the pack by investing more than $760m in aeronautical services, with another eastern airport committing more than $320m and the largest international gateway just under $300m. A western capital city airport put in a little over $120m, a smaller but still significant outlay compared with its peers. Industry representatives stress that over the next decade about $33bn is earmarked for upgrades across the four airports to expand capacity, ease crowding and improve the passenger experience, even as operating expenses rose more than 8% in the most recent year.
From a broader perspective, the system looks profitable but finely balanced between funding growth and keeping travel affordable. The country’s busiest international airport posted an operating profit of roughly $584m in the 2025 financial year, more than the other three combined, helped by strong demand for overseas travel and average revenue of just under $30 per passenger, well above the roughly $20 to $22 per traveller recorded elsewhere. The regulator suggests that because airport charges are not directly regulated and the current monitoring framework seems too weak to restrain pricing, there is a real chance that rising capital costs and lucrative parking margins will end up reflected in higher airfares and access charges. At the same time, passenger satisfaction remains generally positive, rated “good” at most airports and “satisfactory” at one heavily affected by construction works, which indicates that while travellers notice the costs many still feel they are getting acceptable service for the price, at least for now.
