Fright Fest 2023 started on various dates depending on the location, but generally, key dates include:

• Six Flags Six Flags Magic Mountain: September 8 to October 31, 2023.
• Six Flags Discovery Kingdom: September 23 to October 29, 2023.
• Six Flags St. Louis: Select nights from September 16 through October 29, 2023.
• Elitch Gardens: Six weekends from September 27 through November 2, 2023.

Most Fright Fest events started in mid to late September 2023, with some locations starting as early as September 8 and running through October or early November.