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Six Flags Great America crowd calendar

October 2026Gurnee, Illinois, United States

Six Flags Great America is typically moderately busy in October, averaging 62% crowd level. The quietest day is Fri 2 Oct at 47%, and the busiest is Sun 11 Oct at 80%.

Best day left in October

Thursday 22 Oct

October 2026 is typically moderately busy at Six Flags Great America, averaging 62% crowd level. The busiest is Sunday 11 Oct at 80%.

60%crowds
Next bestThu 29 Oct 60%Fri 23 Oct 61%Fri 30 Oct 61%

Six Flags Great America is busy today, at around 64% crowd levels, and busy tomorrow. This weekend is looking busy.

This crowd calendar predicts daily crowd levels for Six Flags Great America through 2026.What the % means

The number is how full the park is: how long the queues run on its main rides in the middle of the day, on one scale for every park (50% is about a 17-minute queue, 70% half an hour, 90% an hour), or, where the park sells dated tickets, the share of its capacity sold if that is higher. The word beside it (Quietest to Busiest) compares the day with this park's own history, so a small park can be at its busiest on a day that is still short queues. The lower the number, the shorter the queues, so pick a quiet day and ride more.

Daily crowd levels and opening hours for Six Flags Great America, October 2026
MonTueWedThuFriSatSun
155%Quieter20 min lines247%Quieter16 min lines371%Busier32 min lines464%Typical26 min lines
554%Quieter20 min lines652%Quieter19 min lines752%Quieter18 min lines855%Typical20 min lines956%Typical20 min lines1064%*TypicalEst.26 min lines11am - 5pm1180%*BusiestEst.43 min lines11am - 10pm
1272%*BusierEst.32 min lines11am - 7pm13Closed14Closed15Closed1663%*TypicalEst.25 min lines5pm - 11pm1765%*TypicalEst.27 min lines11am - 5pm1875%*BusiestEst.36 min lines11am - 10pm
19Closed20Closed21Closed2260%*TypicalEst.23 min lines5pm - 11pm2361%*TypicalEst.24 min lines5pm - 11pm2465%*TypicalEst.27 min lines11am - 5pm2574%*BusierEst.35 min lines11am - 10pm
26Closed27Closed28Closed2960%*TypicalEst.23 min lines5pm - 11pm3061%*TypicalEst.24 min lines5pm - 11pm3164%*TypicalEst.26 min lines11am - 5pm
  1. Thu1Hours unavailable55%Quieter20 min lines
  2. Fri2Hours unavailable47%Quieter16 min lines
  3. Sat3Hours unavailable71%Busier32 min lines
  4. Sun4Hours unavailable64%Typical26 min lines
  5. Mon5Hours unavailable54%Quieter20 min lines
  6. Tue6Hours unavailable52%Quieter19 min lines
  7. Wed7Hours unavailable52%Quieter18 min lines
  8. Thu8Hours unavailable55%Typical20 min lines
  9. Fri9Hours unavailable56%Typical20 min lines
  10. Sat1011am - 5pm64%*Est.Typical26 min lines
  11. Sun1111am - 10pm80%*Est.Busiest43 min lines
  12. Mon1211am - 7pm72%*Est.Busier32 min lines
  13. Tue13Hours unavailableOctober breakClosed
  14. Wed14Hours unavailableOctober breakClosed
  15. Thu15Hours unavailableOctober breakClosed
  16. Fri165pm - 11pmOctober break63%*Est.Typical25 min lines
  17. Sat1711am - 5pmOctober break65%*Est.Typical27 min lines
  18. Sun1811am - 10pm75%*Est.Busiest36 min lines
  19. Mon19Hours unavailableAutumn breakClosed
  20. Tue20Hours unavailableAutumn breakClosed
  21. Wed21Hours unavailableAutumn breakClosed
  22. Thu225pm - 11pmAutumn break60%*Est.Typical23 min lines
  23. Fri235pm - 11pmAutumn break61%*Est.Typical24 min lines
  24. Sat2411am - 5pmAutumn break65%*Est.Typical27 min lines
  25. Sun2511am - 10pmAutumn break74%*Est.Busier35 min lines
  26. Mon26Hours unavailableOctober half-termClosed
  27. Tue27Hours unavailableOctober half-termClosed
  28. Wed28Hours unavailableOctober half-termClosed
  29. Thu295pm - 11pmOctober half-term60%*Est.Typical23 min lines
  30. Fri305pm - 11pmOctober half-term61%*Est.Typical24 min lines
  31. Sat3111am - 5pm64%*Est.Typical26 min lines
Quietest Among the quietest days at this parkQuieter Quieter than a normal day hereTypical A normal day for this parkBusier Busier than a normal day hereBusiest Among the busiest days at this park

Lines at Six Flags Great America average 19 minutes across 29 recorded days, and 40 minutes on the busiest of them. A high score means busy for this park.

Crowd levels are modelled from this park's own recorded queue times, school and public holidays, day of the week and the weather forecast, and may not always be right. Opening hours come from the park and can change. Always check the park's own site before travelling. We score every past forecast against what the queues actually did and publish the result in the crowd forecast accuracy ledger.

Seasonal events at Six Flags Great America

Event nights are among the busiest of the season. See the crowd calendar before you book.

Dates as published by the park. Always check the park's own site before travelling.

October 2026

Frequently asked

How busy is Six Flags Great America today?

Six Flags Great America is predicted to be busy today, at around 64% crowd levels. Lower percentages mean shorter queues.

How busy will Six Flags Great America be tomorrow?

Six Flags Great America is predicted to be busy tomorrow, at around 80% crowd levels.

Is Six Flags Great America busy this weekend?

This weekend Six Flags Great America is looking busy, at around 72% crowd levels on average.

When is the quietest day to visit Six Flags Great America in October 2026?

Friday 2nd is predicted to be the quietest day to visit Six Flags Great America in October 2026, at around 47% crowd levels.

When is Six Flags Great America busiest in October 2026?

Sunday 11th is predicted to be the busiest day at Six Flags Great America in October 2026, at around 80% crowd levels.

How busy is Six Flags Great America in October 2026?

On average, Six Flags Great America is busy in October 2026 - around 62% crowd levels. Weekdays are usually quieter than weekends.

Is Six Flags Great America busier on weekends?

Yes - Six Flags Great America is typically busier at weekends than midweek in October 2026. Visit on a weekday for shorter queues.

What is the best time to visit Six Flags Great America?

The best time to visit Six Flags Great America is on its quietest predicted days - Friday 2nd is the quietest in October 2026 (about 47%). Arriving at opening also means the shortest waits.

Six Flags Great America live wait times todaySix Flags Great America opening timesBest time to visit Six Flags Great AmericaSix Flags Great America ride reliabilityPlan your day at Six Flags Great America

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