In March 2007, Bah received his first call-up for the Ivorian's African Cup of Nations qualifier against Madagascar match played away.
After a successful trial with FC Astra Ploieşti in January 2009, Lionel Bah was signed to a six month contract with FC Astra Ploieşti. In June 2009 Lionel Bah helped FC Astra Ploieşti gain promotion to Division 1 in Romanian premiere league.