DailyMail reported on those pics as Tom leaving LA for Australia alone a private jet: http://www.dailymail.co.uk/tvshowbiz/article-3742991/Flying-solo-Tom-Hiddleston-flies-LA-stumbles-question-romance-Taylor-Swift.html

So maybe he did take a different private F900 to either Hawaii or SF and then took a flight from there to Oz. Would a F900 make the whole flight to Australia?