Airshow to stay at Avalon until 2025 THE Australian International Airshow will stay at Avalon Airport until at least 2025. The Victorian government has negotiated a new deal, with the current agreement set to expire in 2015. Aviation Minister Gordon Rich-Phillips said the airshow was a highlight of the major events calendar, attracting about 195,000 people last year. It pumps about $150 million annually into the state's economy, he said. The 2013 airshow will be open to the public for three days from next Friday.