Six Flags Great America Opening Times Calendar
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Opening hours are provided for informational purposes only and may not always be accurate. Always check the official park website before visiting.
About Six Flags Great America
About Six Flags Great America
Six Flags Great America sits in Gurnee, Illinois, between Chicago and Milwaukee. The coaster line-up includes Maxx Force (with one of the world's fastest inversions), X Flight wing coaster, Goliath (a Rocky Mountain Construction wooden coaster), Raging Bull, American Eagle duelling wooden coaster, and Batman: The Ride. A Hurricane Harbor water park is included during summer.
Illinois and Wisconsin school holidays, Chicago-area weekend visits, and the popular Fright Fest event drive Six Flags Great America's busiest periods. Weekdays in May, June, September and October are dramatically quieter. Check live wait times for Maxx Force and Goliath on arrival, and use our crowd calendar to pick a lower-crowd midweek date for shorter queues.
Six Flags Great America Crowd Calendar - Frequently Asked Questions
When is the best time to visit Six Flags Great America?
The quietest days to visit Six Flags Great America are generally mid-week (Tuesday-Thursday) during term time, when local school holidays are not on. Weekends and school holidays consistently see the biggest crowds. For the most specific guidance, check this page's calendar - low-crowd days are shown in green, high-crowd days in red.
What is the quietest day of the week at Six Flags Great America?
Across theme parks worldwide, Tuesdays and Wednesdays are consistently the quietest days. Fridays pick up the weekend overflow and weekends are the busiest. Six Flags Great America's best time to visit tool shows historical patterns day-by-day.
How does this Six Flags Great America crowd calendar work?
Our crowd calendar combines historical queue time data, scheduled park events, school holidays and typical visitor patterns to predict how busy each day will be. Each day is colour-coded from cyan (very quiet) through green, amber and orange to red (very busy). Hover or tap a date for more detail.
Are Six Flags Great America crowd predictions accurate?
Crowd predictions are based on years of historical data and typically reflect actual conditions. Unpredictable factors like weather, one-off events or ride closures can shift real crowd levels. Treat the calendar as a strong guide, then check live Six Flags Great America queue times on the day of your visit for the most accurate picture.
What are Six Flags Great America's busiest days of the year?
The busiest times at Six Flags Great America are typically the UK/US school summer holidays (late July to early September), Easter week, half-term weeks (especially October half-term for Halloween events), and Christmas school holidays. Bank holiday Saturdays and Sundays are the single busiest days. Avoid these if you want short queues.
What time does Six Flags Great America open and close?
Opening hours vary by season and day of the week. Each date on this calendar shows that day's opening and closing times (tap or hover a day to see them). For today's hours see the Six Flags Great America live queue times page.
How can I use this calendar to plan my visit?
Scroll through upcoming months to find a day that is a) within your availability and b) a cool colour on the calendar (cyan or green). Cross-reference with weather forecasts closer to the date. Arrive at park opening and head to the busiest rides first - the first hour after opening is typically the most productive riding window regardless of crowd level.