Britain's Duke and Duchess of Cambridge flew to Scotland in an £8 million plane last week.
Duke and Duchess of Cambridge with Prince George and Princess Charlotte
The royal couple were lent the private jet by the Duke of Westminster Gerald Grosvenor to travel with their children, George, two, and four-month-old daughter Charlotte to the Highlands to see Britain's Queen Elizabeth.
The family were seen hopping off the eight-seater aircraft, which usually costs £12,000-a-day to hire, at Aberdeen airport on the evening of the Queen's celebratory dinner in honour of her becoming the longest reigning monarch.
An onlooker told the Daily Express newspaper: "There were three cars waiting on the Tarmac for them as they landed."
The insider added: William and Kate got in one car with Prince George and then Charlotte, who was carried in a car seat, went in another car with the nanny."
This is the second time Prince George has taken a flight in the plush jet as he also travelled in it to see his great-grandfather Prince Philip in Scotland in September 2013.
Meanwhile, Catherine, 33 - formerly known as Kate Middleton before she married William in 2011 - will return to her royal duties this week after four months maternity leave.
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