A list of events that occurred on April 7 related to Six Flags.

• 1979 – Six Flags Over Mid-America opens for the 1979 season.
• 1982 – Joust-A-Bout opens at Six Flags Great Adventure.
• 1990 – Viper opens at Six Flags Magic Mountain.
• 2001 – Nitro opens at Six Flags Great Adventure.