Just a few days after criticizing Meghan Markle and Prince Harry, the Cambridge family flew a cheap flight to Scotland for using private planes.
Kate and William got into the FlyBe plane this morning with Prince George, Princess Charlotte and Prince Louis.
They boarded the cheap flight from Norwich to Aberdeen at 8.45am, reports Mail Online.
The video shows George and Charlotte moving forward with their father holding a row of bags, while Kate holds the baby back a little.
A fellow traveler told the mail, "The family was in the lead, I fly this route all the time and we were not the wiser.
"No one knew they were on the flight.
"Later I realized that Kate's mother was sitting a few rows in front of me."
A flight for the same time next week would reset you £ 73. The journey takes one hour and 10 minutes.
George is just off school during summer vacations, and Charlotte will start reception next month. So it's likely that the family will spend their last vacation before resuming semester.
This is not the first time Royals has used low-cost airlines for travel, and in 2011, Prince Harry boarded an EasyJet flight from Edinburgh to London.
The photos only say that Prince Harry and Meghan Markle have been heavily criticized for taking four private planes in just eleven days.
They were called hypocrites because they chose to fly privately while using their influence to preach about the environment.
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The couple took Archie for their first holiday in Ibiza, followed by a short break in Sir Elton John's stunning French villa in Nice.
According to Sir Elton, who organized the flight, he was climate-neutral, but it was estimated that the 12-seat aircraft caused seven times as much emissions per person as a commercial flight.
A number of celebrities, however, have come out in their defense, including a haunting statement by Sir Elton, referring to Princess Diana.
He wrote: "I am deeply concerned about the disfigured and malicious press coverage that was written last week on the Duke and Duchess of Sussex's private residence at my home in Nice.
"Prince Harry's mother, Diana Princess Of Wales, was one of my dearest friends, and I am deeply committed to protecting Harry and his family from the unnecessary intrusion of the press that contributed to Diana's premature death.
"After a hectic year of continuing our hard work and dedication to charity, David and I wanted the young family to spend a private vacation in the safety and quiet of our home.
"In order to maintain a high level of much needed protection, we have provided them with a private jet flight, and to support Prince Harry's commitment to the environment, we have made sure that your flight is carbon neutral by contributing to the Carbon Footprint have done.
"I respect and welcome Harry and Meghan's commitment to charity and urge the press to discontinue these relentless and untrue attacks on their character that are committed on a daily basis almost falsely."