Prince Harry was there in person to see his father King Charles get crowned on 6 May and during the historic ceremony, he was caught confirming his swift exit from the UK.
HELLO! consulted a lipreader who confirmed he said: "I will be straight to the airport," while chatting with Princess Eugenie's husband Jack Brooksbank.
Harry left his wife Meghan Markle at home in Montecito looking after their two children, Prince Archie and Princess Lilibet.
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Prince Harry missed the beginning of his son's birthday as he jetted to the UK to attend his dad King Charles' coronation - which was hosted on the same day as Archie's birthday.
After the ceremony, the royal family all headed to Buckingham Palace to greet the public from the balcony, however, Harry was notably absent and it appears he chose to use this moment to depart and head back home to his family.
Ahead of the big event, Archewell and the Palace confirmed the Duke was to join guests at the coronation.
The Palace said in a statement: "Buckingham Palace is pleased to confirm that the Duke of Sussex will attend the Coronation Service at Westminster Abbey on 6th May.
"The Duchess of Sussex will remain in California with Prince Archie and Princess Lilibet."
SEE: Watch the historic moment King Charles is crowned
The monarch's coronation is a break from tradition as it is the first coronation to take place on a Saturday in over 100 years.
The coronation itself involves six basic stages: the recognition, the oath, the anointing, the investiture, the enthronement, and the homage. At the heart of the coronation is the anointing with holy oil.
Following the service, the newly crowned pair returned to Buckingham Palace in the Coronation Procession, where joined by other members of the royal family.
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This will be followed by a balcony moment when the couple and other royals will watch a flypast at around 2.15pm, weather permitting.