Next Tuesday marks a quiet but meaningful milestone in the life of Prince George. As he celebrates his 12th birthday on July 22, the future king steps closer toward the weighty responsibilities of royal life — and an age-old tradition may soon begin to shape his travels.

Since infancy, George has often appeared in public alongside his father, Prince William. But now, with both occupying the first and second places in the line of succession, royal protocol may begin to separate their paths when it comes to official travel. Under long-standing tradition, two heirs are discouraged from flying together — a precaution meant to protect the continuity of the monarchy in the unlikely event of an accident.

While the rule has at times been relaxed, particularly during George’s early childhood, his growing age and rising public profile suggest that future tours may see him fly solo, at least symbolically. It’s a subtle change, but one that underscores his unique role: not just as the young prince in family portraits, but as the monarch-in-waiting.

How William and Kate told him he’d one day be king

Long before this birthday, Prince George was gently made aware of his destiny — though not in haste or under pressure.