September 21 | Six Flags Wiki | Fandom

Statement about the Six Flags-Cedar Fair merger
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A list of events that occurred on September 21 related to Six Flags.

2013 – Gary Story dies.
2018 – Fright Fest 2018 begins at Six Flags Discovery Kingdom.
2019
- Fright Fest 2019 begins at Six Flags America.
- Fright Fest 2019 begins at Six Flags New England.
- Fright Fest 2019 begins at Six Flags Over Georgia.
- Fright Fest 2019 begins at Six Flags Over Texas.