Fayad was the eldest son of Ibrahim Efendi Fayad, a local notable who served as a district governor under the French mandate, and Lamia Ali Dhaher, niece of the poet and religious figure Sheikh Suleiman Dhaher, an intellectual in the Nabatieh governorate.
He married Badriya Fayad and they had eight children: Afaf (step-daughter), Talal, Hilal, Daad, Dalal, Dunia, Ghada and Randa.
He spent most of his career between Lebanon and Saudi Arabia and then after retirement lived in Switzerland, the United Kingdom and Morocco.
He then returned to Beirut as a correspondent for Saudi Radio and wrote for the newspapers al-Hadaf and al-Rased from 1958 to 1968.
بيار خباز) of the Lebanese University published a study of his works in 1998 (سعيد فياض شاعرا - دراسة جمالية نفسية).