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Parks
Six Flags Great America
Crowd calendar
10-31-2026
October 31, 2026
Six Flags Great America
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Information
Crowd level
62%
Crowd level
Busy
Empty
Quiet
Busy
Packed
πΊπ»π€‘ 11:00-00:00
Events
πΊ Oktoberfest
π» Fright Fest
π€‘ Kids Boo Fest