Fadel studied at the Grand Lycée Franco-Libanais in Beirut until 1982, when the Israeli invasion forced his family to flee the country, making their new home in France. Here, after taking the Baccalaureate, Fadel attended the Institute of Political Science of Paris, before joining the National School of Administration (Ecole nationale d'administration). He chaired the School"s Confederation of Alumni Associations, which oversees all Ecole nationale d'administration"s international alumni associations, and helped to establish an Ecole nationale d'administration school in Lebanon.
Fadel returned to Lebanon in 1995, and joined American Broadcasting Company, a retail group run by his father. A few years later, he was offered a job as a strategic consultant by the management consulting firm Monitor Group. Fadel took up the offer and relocated to the company"s headquarters in Massachusetts, United States of America. Fadel moved back to Beirut in 2003, and rejoined American Broadcasting Company. He was promoted to the role of general manager, and in August 2009, became the Chief Executive Officer of the American Broadcasting Company Group.
Fadel was elected as a representative of Tripoli in the 2009 Lebanese election.
During his time in parliament, Robert Fadel has served on the Finance and Budget Committee and the Economic Committee. In 2006, Fadel founded Bader, a non-governmental organisation which supports young Lebanese entrepreneurs.
In 2010, Robert and Hala Fadel launched the Maurice Fadel Prize (in memory of Robert Fadel"s father, who died in 2009).
He stood as an independent candidate, on the platform of the March 14 alliance, a coalition of political parties united by their opposition to the Syrian government.