Prince William has reportedly jetted off to Scotland for a quiet father-son weekend with King Charles III. William, 43, traveled to Balmoral Castle on Friday, September 26, for an outing with his 76-year-old father, according to Sky News. The outlet further reported that Charles and son are set to have "quality time together" after a busy week of official engagements. (Charles is also the father of Prince Harry, who is currently estranged from the royal family.) Charles visited the BAE Systems shipyard in Barrow-in-Furness, England, on Monday, September 22.