A visible-light-induced tandem radical intramolecular cyclization/arylation of quinoxalin-2(1H)-ones with bromodifluoroacetamides is described. This protocol allows efficient access to a variety of valuable α,α-difluoro-γ-lactam-fused quinoxalin-2(1H)-ones in moderate to good yields under metal-free, mild and redox neutral reaction conditions. This strategy is tolerant of various functional groups and a broad range of substrates. The mechanism experiments suggested an involvement of 5-exo-trig cyclization and a radical process in this transformation.