Michael McCormack has defended the design of the federal government's $1.2 billion package to support Australia's tourism industry, which has been savaged by the lack of tourists because of international border closures.
The scheme includes providing 800,000 half-price flight tickets between states to fuel domestic tourism between April and July.
At Thursday's launch of the package there were 13 destinations in the plan, but within hours Townsville, Darwin and Adelaide were added.
Now Hobart has been included and the deputy prime minister says there is potential to added more.
"This is an initial list," Mr McCormack, who is also transport minister, told ABC's Insiders program on Sunday.
"Austrade has identified locations throughout Australia as needing people to come to them."
Mr McCormack said the government will revisit the "demand-driven" scheme once the 800,000 tickets are used up.
He said these chosen destinations would normally have international tourists at this time of year.
"They don't have the international tourists, we want to get those people from Australia to those locations to spend money in hotels, to spend money on tourist boat operators, because every dollar spent on an airline ticket is worth $10 at the destination," he said..