Coalition frontbencher Bridget McKenzie has admitted she failed to declare 16 flight upgrades over several years.
The shadow transport minister's admission comes a week after she claimed to have never received any complimentary airline upgrades, amid a wider debate about political travel perks.
The senator has now disclosed she was upgraded to business class on three domestic Qantas flights this year and last year, upgraded five times on Qantas flights between Australia and New Zealand between 2016 and 2018, and on eight more flights between 2015 and 2019 with both Qantas and Virgin.
In a statement, Senator McKenzie apologised for her error.