Anthony Albanese has evaded questions about whether he made personal requests to former Qantas boss Alan Joyce for free flight upgrades, deriding the claim as an attempt "to sell a book".
Mr Albanese fronted the media and returned fire after Nine Newspapers reported he had a direct line to Mr Joyce while in the transport portfolio, which he used to request upgrades to business class through the Qantas Chairman's Lounge program.
He dismissed that claim by columnist Joe Aston as made by a "person who is trying to sell a book", repeating that all free flight upgrades he had received had been properly declared.
Mr Albanese said the only discussions he could recall with Mr Joyce at the time were "not through calls", and related to the first A380 flight from Australia to Dubai.
"There is no accusations being made with any specifics at all about any of this. None," he said.
"If there is a suggestion to be made, let it be made."
The prime minister repeated that he had declared all his flights, but said there were other politicians who had received more upgrades than him, or not fully declared their Qantas perks.
Mr Albanese added a "nasty" Opposition Leader Peter Dutton was obsessed with attacking him and his family, who have also benefited from the Chairman's Lounge program.
The Coalition is considering attempting to establish an inquiry and summonsing Mr Joyce to face questions over whether he had taken calls from Mr Albanese about flight upgrades.
The ministerial code that covered part of Mr Albanese's time in the transport portfolio required that ministers not seek or encourage "any form of gift in their personal capacity".
The federal government has faced claims it was influenced by the former Qantas boss in its decision to reject a proposed expansion by Qatar Airways, which would have helped to improve competition and reduce airfares.
It has rejected those claims, and ministers said on Monday the prime minister had a track record that showed the government had not been soft on Qantas.