"I've got a new plane," she announced in a post on X.
"Yes it was donated. Yes I'm super happy. Yes it's fast. Yes it's amazing. Yes it's going to annoy the Guardian. Yes it means I can visit more regional towns across the country more often.
"No I won't be doing welcome to country each we land. No it's not battery operated."
The aircraft is a Cirrus G7, with used models listed online for well over $1 million.
Senator Hanson said two donors - high-profile stockbroker Angus Aitken and his partner Sarah - had pitched in $1 million to One Nation.
Former NT chief minister Adam Giles and geologist turned climate-change sceptic Ian Plimer had poured in another $500,000 each, she said.
Mr Aitken, Mr Giles and Dr Plimer are close with billionaire Gina Rinehart, who in turn has been pouring money into One Nation.
"Their faith and investment in One Nation is an enormous help towards our next federal campaign and I can't thank them enough."
Senator Hanson said she was focused on raising more money for the anti-immigration party before new donations laws take effect in 2027.
Under the reforms, cashed-up individuals won't be allowed to donate more than $50,000 to a political party - although independent MPs have pointed out loopholes in the policy which favour the major parties.
More Australians now approve of Senator Hanson's party leadership than Prime Minister Anthony Albanese's or Opposition Leader Angus Taylor's, according to the latest Essential poll.
The survey shows 52 per cent of Australians either approve or strongly approve of the job Senator Hanson is doing as One Nation leader, compared to 34 per cent who disapprove or strongly disapprove.
The reading is slightly ahead of Mr Albanese and well ahead of Mr Taylor, who sits on 34 per cent approving and the same proportion disapproving.
