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Six Flags Great America crowd calendar

October 2026Gurnee, Illinois, United States

Six Flags Great America is typically busy in October, averaging 66% crowd level. The quietest day is Fri 2 Oct at 55%, and the busiest is Sun 18 Oct at 77%.

Best day left in October

Friday 2 Oct

October 2026 is typically busy at Six Flags Great America, averaging 66% crowd level. The busiest is Sunday 18 Oct at 77%.

55%crowds
Next bestThu 22 Oct 57%Thu 1 Oct 58%Fri 23 Oct 58%

Six Flags Great America is moderately busy today, at around 58% crowd levels, and moderately busy tomorrow. This weekend is looking busy.

This crowd calendar predicts daily crowd levels for Six Flags Great America through 2026.What the % meansEstimated from historical data

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
158%*TypicalEst.22 min lines255%*TypicalEst.20 min lines5pm - 11pm364%*TypicalEst.26 min lines10am - 10pm471%*BusierEst.31 min lines11am - 10pm
5Closed6Closed7Closed8Closed960%*TypicalEst.23 min lines5pm - 11pm1069%*BusierEst.30 min lines10am - 10pm1175%*BusiestEst.36 min lines11am - 10pm
1270%*BusierEst.31 min lines11am - 7pm13Closed14Closed15Closed1661%*TypicalEst.24 min lines5pm - 11pm1771%*BusierEst.31 min lines10am - 10pm1877%*BusiestEst.39 min lines11am - 10pm
19Closed20Closed21Closed2257%*TypicalEst.22 min lines5pm - 11pm2358%*TypicalEst.22 min lines5pm - 11pm2470%*BusierEst.31 min lines10am - 10pm2577%*BusiestEst.39 min lines11am - 10pm
26Closed27Closed28Closed2960%*TypicalEst.23 min lines5pm - 11pm3061%*TypicalEst.24 min lines5pm - 11pm3173%*BusierEst.34 min lines10am - 10pm
  1. Thu1Hours unavailable58%*Est.Typical22 min lines
  2. Fri25pm - 11pm55%*Est.Typical20 min lines
  3. Sat310am - 10pm64%*Est.Typical26 min lines
  4. Sun411am - 10pm71%*Est.Busier31 min lines
  5. Mon5Hours unavailableClosed
  6. Tue6Hours unavailableClosed
  7. Wed7Hours unavailableClosed
  8. Thu8Hours unavailableClosed
  9. Fri95pm - 11pm60%*Est.Typical23 min lines
  10. Sat1010am - 10pm69%*Est.Busier30 min lines
  11. Sun1111am - 10pm75%*Est.Busiest36 min lines
  12. Mon1211am - 7pm70%*Est.Busier31 min lines
  13. Tue13Hours unavailableOctober breakClosed
  14. Wed14Hours unavailableOctober breakClosed
  15. Thu15Hours unavailableOctober breakClosed
  16. Fri165pm - 11pmOctober break61%*Est.Typical24 min lines
  17. Sat1710am - 10pmOctober break71%*Est.Busier31 min lines
  18. Sun1811am - 10pm77%*Est.Busiest39 min lines
  19. Mon19Hours unavailableAutumn breakClosed
  20. Tue20Hours unavailableAutumn breakClosed
  21. Wed21Hours unavailableAutumn breakClosed
  22. Thu225pm - 11pmAutumn break57%*Est.Typical22 min lines
  23. Fri235pm - 11pmAutumn break58%*Est.Typical22 min lines
  24. Sat2410am - 10pmAutumn break70%*Est.Busier31 min lines
  25. Sun2511am - 10pmAutumn break77%*Est.Busiest39 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. Sat3110am - 10pm73%*Est.Busier34 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 20 minutes across 34 recorded days, and 40 minutes on the busiest of them. A high score means busy for this park.

Crowd levels are estimated from this park's own recorded queue times 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 moderately busy today, at around 58% crowd levels. Lower percentages mean shorter queues.

How busy will Six Flags Great America be tomorrow?

Six Flags Great America is predicted to be moderately busy tomorrow, at around 55% crowd levels.

Is Six Flags Great America busy this weekend?

This weekend Six Flags Great America is looking busy, at around 68% 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 55% crowd levels.

When is Six Flags Great America busiest in October 2026?

Sunday 18th is predicted to be the busiest day at Six Flags Great America in October 2026, at around 77% crowd levels.

How busy is Six Flags Great America in October 2026?

On average, Six Flags Great America is busy in October 2026 - around 66% 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 55%). 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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