A list of events that occurred on April 2 related to Six Flags.

• 1977 – Six Flags Over Mid-America opens for the 1977 season.
• 1999 – Six Flags Great Adventure opens for the 1999 season with the first batch of rides opening that were added for the "War on Lines" expansion.
• 2007 – Six Flags Great Adventure opens for the 2007 season alongside the new Wiggles World expansion.