A billionaire CEO and vocal advocate for climate change has opted for a commercial flight over his $80 million private jet, mere weeks after facing criticism for using the environmentally harmful aircraft while advocating for the planet’s preservation.

Atlassian boss Mike Cannon-Brookes came under fire in March for buying an emissions-belching, multimillion-dollar Bombardier 7500.

A single private jet can emit as much carbon dioxide in one hour as the average person does in a whole year. Moreover, private flights are 14 times more pollutive (per passenger) than commercial flights.

Over a period of less than a year, his Bombardier Global 7500 has traveled more than 440,000 kilometers – roughly the distance to the moon and partway back – spanning four continents and 43 airports.

His travel record resembles a billionaire’s dream itinerary: European capitals, American national parks, luxurious Pacific getaways, and thrilling Formula One races.

Data compiled by The Australian reveals that the jet has logged over 531 hours in the air, accounting for nearly 22 full days, and has flown on 309 different days since the previous September.

Analysts estimate the carbon dioxide emissions from Mr Cannon-Brookes’ flights would be enough to power a town of 2,400 homes for a year.

However, after considerable backlash about his private jet usage, Mr. Cannon-Brookes was spotted walking through Sydney Airport on Monday, following a commercial flight from Los Angeles.

The businessman was just one of a crowd of passengers who had embarked on the overnight, long-distance flight.

Wearing a black t-shirt and bomber jacket with beige trousers, he wheeled his carry-on bag, but no checked-in luggage, to the valet service.

Despite flying around the world in a private jet, Mr Cannon-Brookes previously warned the world needs to change its eating habits by adding insects to its daily diet if the planet is to feed a global population of eight billion.

As part of his climate change agenda, Mr Cannon-Brookes became AGL’s largest shareholder in 2022, purchasing an 11 per cent stake to pressure the company into accelerating its move to renewable energy.

He used his influence to block AGL’s proposed demerger, which would have extended the life of its coal-fired power plants, and publicly called AGL ‘one of the most toxic companies on the planet’ due to its high carbon dioxide emissions.

After purchasing the private jet, Mr Cannon-Brookes admitted he had a ‘deep internal conflict’ about buying the aircraft given his stance on climate change, but ultimately decided his interests were the priority and continued to use the plane.

‘There’s a couple of reasons I’ve purchased a plane. Personal security is the primary reason… but also so I can run a global business from Australia, and still be a constantly present dad,’ he said.

‘So, this is a hard, continual trade-off I’ve decided to make.’

Mr Cannon-Brookes defended his private jet use by pointing to what he described as an ‘extremely rigorous carbon regime’ applied to his flights, including sustainable aviation fuel and direct air capture technology.

‘These options aren’t practical for commercial flights but are viable privately,’ he told The Australian.

‘This means my flights actually have a net negative carbon footprint.’

But now it appears the media storm over his private jet use has impacted him – as he returns to commercial jets like the rest of us.