Jetstar will offer flights within Australia for a record low price of just five cents, including tax.
The Qantas subsidiary will have 5000 seats available at the rock-bottom price between 7pm and midnight this evening (November 21).
The 5c fare will be available on seven routes: Sydney-Gold Coast, Melbourne-Hobart, Melbourne-Launceston, Melbourne-Newcastle, Brisbane-Rockhampton, Brisbane-Mackay and Brisbane-Newcastle.
Airline spokesman Simon Westaway told newspapers it would not rule out giving away tickets.
"A seat flown that's got nobody in it is an air seat wasted", he said.