Qantas CEO Alan Joyce's six-bedroom waterfront mansion with its own private jetty, harbour pool and picturesque views of the Sydney skyline has been targeted by vandals amid anger from ex-employees and passengers.

Qantas boss Alan Joyce's sprawling Sydney harbourside home has been targeted by vandals amid the airline's ongoing battle with employees and customers.

The luxurious Mosman mansion - bought for a staggering $19 million by Joyce and his partner Shane Lloyd earlier this year - is nestled in one of the most exclusive streets in the affluent area of the Lower North Shore.

But neighbours spotted the three-storey residence of the couple had been hit by several eggs, rolls of toilet paper and an unknown substance, likely fruit or meat.

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Photos from outside the 15-room property on Tuesday showed the remnants of eggs splattered across various areas of the roof while long lengths of toilet paper draped from the front to the back of the house.

The garage was not spared either with three dark red splats on one of the doors.

NSW Police confirmed to SkyNews.com.au local officers had not received any reports of malicious damage but urged residents to report incidents or crime.

Neighbours told The Daily Telegraph they have not seen Mr Joyce or his husband at the home since the purchase was made in May.

"We haven't seen him ... we heard they were going to spend $3 million changing the colours of god knows what," one local said.

Another resident backed the claims there has been no movement at the home.

"There has been nobody at the house. Put it this way, I haven't seen any cars there," they added.

Other Mosman locals were adamant people living in the affluent area would not be so brazen to vandalise a property with fingers pointed elsewhere.

Qantas' reputation has taken a dive since the COVID-19 pandemic with thousands of employees from cabin crew to ground staff losing their jobs due to cost-cutting measures despite a $2 billion government rescue package.

State and international border closures led to an estimated 15,000 laid off without pay or forced to use their leave in 2020 and another 2,500 were stood down almost a year later.

Anger has also come from some travellers who claimed they were still waiting to receive a refund from the airline weeks and months after their cancelled flights.

The Flying Kangaroo is set to record some of its worst on-time performances after 6.7 per cent of domestic flights were scrapped.

It also reported an on-time performance of 44 per cent, meaning just under half of all flights were delayed or cancelled.

The results reflected the operations over seven days last week.

A number of issues were put at blame, including a 10 per cent of air traffic control staff being sick and the recent wet weather causing delays.

Other holidaymakers have been left frustrated in recent weeks after luggage went missing during transit and had to wait for hours or even days before it was returned.

There is also ongoing anger from ex-employees over the outsourcing of about 2,000 ground handlers deemed "illegal" by the Federal Court.

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