But now, it feels like Six Flags is on a path to rediscovery, and Fright Fest is leading the charge. Fright Fest transforms Six Flags Over Texas in Arlington on select nights from Sept. 12 to November 2, ushering in weeks packed with thrills and chills. “Fright Fest is a fan favorite. Six Flags Over Texas has recaptured its magic with Fright Fest 2025. Fright Fest runs on select nights from September 12 to November 2.