Six Flags Great America Fright Fest 2024. Once the sun goes down on saturdays and sundays, the night begins to take over and transforms the park. Each fall the park turns into a spooky version of itself, complete with decorations, scare.

Six flags great america, 1 great america parkway, gurnee. 2024 season pass holders require a haunted attraction pass or purchase an express pass for expedited entry.