In her final moments, Charles and Anne were by the Queen's bedside.
To reach the estate, the rest of the royal family must fly.
Prince Andrew and Prince Edward, the other two sons, hurried from Berkshire in a private jet.
At 3:50 pm, the jet touched down at Aberdeen Airport, leaving no time to get to Balmoral before the queen passed away.
The Duke of Sussex, Prince Harry, took a solo flight from London to Balmoral, where he arrived at at 8:30 p.m.
The Queen's passing brings an end to her historic reign and ignites a global outpouring of sorrow.