The former The Apprentice star, wearing a blue face mask, was seen chatting on the phone as she made her way to her flight on Monday.
Katie wore a grey top with sheer sleeves with blue denim jeans, gold trainers and large dark sunglasses.
She had flown out to Sydney to take part in Big Brother VIP and was immediately placed into two weeks of quarantine in a government-mandated hotel.
However in since-deleted Instagram posts the 46-year-old reportedly called lockdowns ‘the greatest hoax in human history’ and said she was breaking the rules by refusing to wear a mask in the Sydney hotel.
Her comments sparked outrage as Australia battles a Covid surge which has led to its two largest cities, Sydney and Melbourne, being placed into lockdown.
Home Affairs minister Karen Andrews said on Monday that the reality TV star would be deported for her ‘appalling’ behaviour, which also led Big Brother producers to condemn her actions and confirm she would not take part in the show.