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Six Flags Great America
Crowd calendar
09-19-2026
September 19, 2026
Six Flags Great America
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Information
Crowd level
57%
Crowd level
Busy
Empty
Quiet
Busy
Packed
πΊπ 11:00-23:00
Events
πΊ Oktoberfest
π Tricks and Treats
Fright Fest presented by SINCKERS