A list of events that occurred on May 1 related to Six Flags.
- 1993 – Batman: The Ride opens at Six Flags Great Adventure.
- 1997 – Gotham City opens at Six Flags Over Georgia.
- 1999 – Raging Bull opens at Six Flags Great America.
- 2004 – A 53-year-old, 230 pound man from Bloomfield, Connecticut falls out of the Superman: Ride of Steel roller coaster at Six Flags New England during the last turn and is killed. Reports show that the ride attendant had not checked that the guest's ride restraint was secure as his girth was too large for the T-bar-shaped ride restraint to close properly.
- 2021
- The Great Escape opens for the 2021 season.
- Six Flags Hurricane Harbor Arlington opens for the 2021 season.
- Six Flags Hurricane Harbor Splashtown opens for the 2021 season.