Passengers on a British Airways flight to Barcelona were treated to an unexpected royal sighting when Prince William and his eldest son, Prince George, appeared among the travellers. Dressed casually and carrying their own bags, the future kings looked like any other father and son heading off for a football match.
But their low-key journey raised an intriguing question: had Prince William and Prince George broken one of the royal family’s most important travel protocols?
Prince William And Prince George’s Unexpected Commercial Flight
The Prince of Wales and his 13-year-old son reportedly boarded a scheduled British Airways flight to Barcelona to watch Aston Villa face FC Barcelona in the UEFA Champions League.
Fellow passengers captured the pair inside the aircraft, with discreet security nearby. There was no private jet or elaborate royal arrival, just a father and son enjoying a football trip.
For William, a passionate Aston Villa supporter, the journey offered a rare opportunity to spend quality time with George away from official engagements.
However, travelling together potentially challenged a longstanding royal convention designed to protect the line of succession.
The Royal Travel Rule That Keeps Heirs Apart
One of the British monarchy’s lesser-known traditions advises direct heirs to the throne against flying on the same aircraft.
The reasoning is straightforward: should an aviation disaster occur, multiple future monarchs could be lost simultaneously.
Prince William is currently first in line to succeed King Charles III, followed by Prince George, Princess Charlotte and Prince Louis.
According to longstanding royal practice, heirs are generally expected to travel separately once the younger heir reaches approximately 12 years old.
George passed that milestone in July 2025, making his recent journey with William particularly noteworthy.
Can Royal Travel Protocol Be Broken?
Importantly, this restriction is a convention rather than a legal requirement.
The reigning monarch can reportedly authorise exceptions, allowing heirs to travel together when circumstances justify it.
Queen Elizabeth II previously permitted family members to share aircraft, particularly when royal children were younger.
Consequently, William and George’s Barcelona trip does not necessarily represent a breach of protocol. King Charles may have approved their journey, although no such authorisation has been publicly confirmed.
Other Surprising Royal Travel Traditions
The monarchy’s strict approach to travel extends beyond separating heirs.
Senior royals traditionally pack black clothing when travelling abroad, ensuring they are appropriately dressed should a family member die unexpectedly.
The custom is associated with Queen Elizabeth II’s experience in 1952, when she learned of her father King George VI’s death while visiting Kenya.
Without suitable mourning clothes immediately available, she reportedly had to wait for an appropriate outfit before appearing publicly upon returning to Britain.
