On Thursday, William, Kate and their children have been spotted getting off a £73 budget flight to Scotland.
The Cambridges along their nanny Maria Teresa Turrion Borrallo were all noticed disembarking the 8:45am FlyBe flight from Norwich to Aberdeen.
The video footage obtained by the MailOnline shows the family being escorted from the plane and getting into waiting vehicles. William is walking ahead with his eldest children George and Charlotte who are carrying their backpacks.
At one point, George made a grab for his dad’s already full hand as his sister happily skipped behind.
Mom Kate is holding baby boss Louis and walking alongside nanny Maria, behind them.
A passenger on the plane revealed to the MailOnline: “The family were sat right at the front. I fly this route all the time and we were non the wiser. No one knew they were on the flight. Later on I realised that Kate’s mother was sat a few rows in front of me.”
It’s not the first time Royals have used budget airlines to travel. In 2011, Prince Harry boarded an EasyJet flight from Edinburgh to London.
George and Charlotte are currently on summer holiday from school, so it’s likely that the family are taking a final holiday before term resumes.
It is thought that they will spend the bank holiday weekend with the Queen and Prince Philip at Balmoral Castle.
The Duke and Duchess of Cambridge have been visiting Balmoral since their university days. They have enjoyed some of their most romantic moments at the residence, staying at a cottage called Tam-na-Ghar during their breaks at St Andrews University.
It was also reported at that time that William also surprised Kate in 2009, arranging a candle-lit in a remote log cabin on the banks of the River Dee.