A coalition of airport users has backed calls from lobby group Airlines for Australia and New Zealand for reforms to the way airports are regulated.
The Senate Rural and Regional Affairs and Transport Committee has published its report into the operation, regulation and funding of regional air services.
The International Air Transport Association (IATA) says the Productivity Commission's (PC) draft report into the economic regulation of the nation's airports reached its conclusions without a balanced assessment of the evidence.
Airlines for Australia and New Zealand has expressed a "profound sense of disappointment" with the Productivity Commission's airports inquiry.
Virgin Australia chief executive John Borghetti has welcomed calls for a review of Sydney Airport's hourly movement cap and arrangements for regional services.
Melbourne Airport chief executive Lyell Strambi says investors in Australia's airports need regulatory certainty over their investments.