The relationship between Onassis and his father experienced tensions as a result of his secret relationship with Fiona Thyssen, and he was later appointed the head of Olympic Aviation, a Greek regional airline owned by his father.
The relationship between Onassis and his father experienced tensions as a result of his secret relationship with Fiona Thyssen. He was later appointed the head of Olympic Aviation. Olympic Aviation was a Greek regional airline. This Greek regional airline was owned by his father.