The 37-year-old grandson of the late monarch appeared to be comforting an airport worker as he boarded the plane.
A 1917 law by King George stipulates that the children of the son of a sovereign shall have HRH titles if they so choose.
Several members of the royal family rushed to Scotland upon news of the queen's declining health.
ET's royal expert breaks down why Meghan Markle isn't with Prince Harry and the royal family in the wake of Queen Elizabeth II's death.
The couple shared a special message in honor of the Queen who passed away at the age of 96 Thursday.
The royal family traveled to Scotland to be by Queen Elizabeth II's side just hours before her death. She was 96.
Her Majesty died on Thursday amid a rift between the two royal brothers.
Celebrities are mourning the loss of Queen Elizabeth II, who died peacefully at Balmoral Castle in Scotland. She was 96.
Queen Elizabeth died on Thursday at the age of 96.
Royal expert Katie Nicholl explains how Queen Elizabeth II's death may affect Prince William and Prince Harry's strained relationship.
Moments before Queen Elizabeth's death was announced, a double rainbow appeared over Buckingham Palace.
Her Majesty's death was announced following the royal family's arrival to the Scotland castle.
Queen Elizabeth has died, she was 96. Hours before her death, the royal family traveled to Scotland to be by her side.
What comes next for the British monarchy?
