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Six Flags Great America crowd calendar, September 2026

September 202630 days forecast

Six Flags Great America is typically quiet in September 2026, averaging 32% of a peak day. The quietest day is Wed 2 Sep at 19%, and the busiest is Sat 26 Sep at 48%.

Best day to visit in September

Wednesday 2 Sept

September 2026 is typically quiet at Six Flags Great America, averaging 32% of a peak day. The busiest is Saturday 26 Sept at 48%.

19%crowds
Also quietWed 9 Sept 20%Wed 16 Sept 20%Wed 23 Sept 21%

Six Flags Great America is typically quiet in September 2026, averaging around 32% crowd levels. The quietest day to visit is predicted to be Wednesday 2nd (about 19%), while the busiest is Saturday 26th (about 48%). Weekdays are noticeably quieter than weekends, so a midweek visit means shorter queues.

Wondering how busy Six Flags Great America will be in September 2026? This calendar predicts crowd levels day by day. The lower the score, the shorter the queues, so pick a quiet day and ride more. Estimated from historical data

Daily crowd levels and opening hours for Six Flags Great America, September 2026
MonTueWedThuFriSatSun
122%*CalmEst.219%*QuietEst.325%*CalmEst.435%*CalmEst.543%*AvgEst.640%*CalmEst.
733%*CalmEst.826%*CalmEst.920%*QuietEst.1026%*CalmEst.1136%*CalmEst.1246%*AvgEst.1340%*CalmEst.
1430%*CalmEst.1525%*CalmEst.1620%*QuietEst.1728%*CalmEst.1838%*CalmEst.1947%*AvgEst.2041%*AvgEst.
2131%*CalmEst.2226%*CalmEst.2321%*CalmEst.2428%*CalmEst.2538%*CalmEst.2648%*AvgEst.2742%*AvgEst.
2831%*CalmEst.2927%*CalmEst.3021%*CalmEst.
  1. Tue1Hours unavailableSummer22%*Est.Calm
  2. Wed2Hours unavailableSummer19%*Est.Quiet
  3. Thu3Hours unavailableSummer25%*Est.Calm
  4. Fri4Hours unavailableSummer35%*Est.Calm
  5. Sat5Hours unavailableSummer43%*Est.Avg
  6. Sun6Hours unavailableSummer40%*Est.Calm
  7. Mon7Hours unavailableSummer33%*Est.Calm
  8. Tue8Hours unavailableSummer26%*Est.Calm
  9. Wed9Hours unavailableSummer20%*Est.Quiet
  10. Thu10Hours unavailableSummer26%*Est.Calm
  11. Fri11Hours unavailableSummer36%*Est.Calm
  12. Sat12Hours unavailableSummer46%*Est.Avg
  13. Sun13Hours unavailableSummer40%*Est.Calm
  14. Mon14Hours unavailable30%*Est.Calm
  15. Tue15Hours unavailable25%*Est.Calm
  16. Wed16Hours unavailable20%*Est.Quiet
  17. Thu17Hours unavailable28%*Est.Calm
  18. Fri18Hours unavailable38%*Est.Calm
  19. Sat19Hours unavailable47%*Est.Avg
  20. Sun20Hours unavailable41%*Est.Avg
  21. Mon21Hours unavailable31%*Est.Calm
  22. Tue22Hours unavailable26%*Est.Calm
  23. Wed23Hours unavailable21%*Est.Calm
  24. Thu24Hours unavailable28%*Est.Calm
  25. Fri25Hours unavailable38%*Est.Calm
  26. Sat26Hours unavailable48%*Est.Avg
  27. Sun27Hours unavailable42%*Est.Avg
  28. Mon28Hours unavailable31%*Est.Calm
  29. Tue29Hours unavailable27%*Est.Calm
  30. Wed30Hours unavailable21%*Est.Calm
Quiet 0-20%Below avg 20-40%Average 40-60%Above avg 60-80%Very busy 80-100%

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.

August 2026October 2026November 2026December 2026January 2027February 2027March 2027April 2027Full crowd calendar

Frequently asked

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

Wednesday 2nd is predicted to be the quietest day to visit Six Flags Great America in September 2026, at around 19% crowd levels.

When is Six Flags Great America busiest in September 2026?

Saturday 26th is predicted to be the busiest day at Six Flags Great America in September 2026, at around 48% crowd levels.

How busy is Six Flags Great America in September 2026?

On average, Six Flags Great America is quiet in September 2026 - around 32% 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 September 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 - Wednesday 2nd is the quietest in September 2026 (about 19%). Arriving at opening also means the shortest waits.

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