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October 2026 · Gurnee, Illinois, United States

Six Flags Great America crowd calendar

Quietest
Fri 2 Oct49%
Busiest
Mon 12 Oct81%
Typical day
66%
Days open
18/31

Six Flags Great America is typically busy in October, averaging 66% crowd level. The quietest day is Fri 2 Oct at 49%, and the busiest is Mon 12 Oct at 81%.

Crowd calendar ↓

Best day left in October

Wednesday 21 Oct

October 2026 is typically busy at Six Flags Great America, averaging 66% crowd level. The busiest is Monday 12 Oct at 81%.

58%crowds
Next bestThu 22 Oct 60%Fri 23 Oct 61%Thu 29 Oct 61%

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 % 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
1Closed249%Quieter17 min lines371%Busier32 min lines464%Typical26 min lines
5Closed6Closed7Closed8Closed964%Typical26 min lines1080%Busiest43 min lines1175%Busier36 min lines
1281%Busiest44 min lines13ScoClosed14ScoClosed15ScoClosed16Sco55%Quieter20 min lines17Sco80%Busiest43 min lines1860%Typical24 min lines
19GerClosed20GerClosed21Best dayGer58%*Typical · Est.22 min lines22Ger60%*Typical · Est.23 min lines5pm - 11pm23Ger61%*Typical · Est.24 min lines5pm - 11pm24Ger67%*Typical · Est.28 min lines11am - 5pm25Ger73%*Busier · Est.34 min lines11am - 10pm
26EngGerClosed27EngGerClosed28EngGerClosed29EngGer61%*Typical · Est.24 min lines5pm - 11pm30EngGer63%*Typical · Est.25 min lines5pm - 11pm3166%*Typical · Est.28 min lines11am - 5pm
  1. Thu1ClosedClosed
  2. Fri2ClosedFright Fest49%17 min lines
  3. Sat3ClosedFright Fest71%32 min lines
  4. Sun4ClosedFright Fest64%26 min lines
  5. Mon5ClosedClosed
  6. Tue6ClosedClosed
  7. Wed7ClosedClosed
  8. Thu8ClosedClosed
  9. Fri9ClosedFright Fest64%26 min lines
  10. Sat10ClosedFright Fest80%43 min lines
  11. Sun11ClosedFright Fest75%36 min lines
  12. Mon12Closed81%44 min lines
  13. Tue13ClosedScoClosed
  14. Wed14ClosedScoClosed
  15. Thu15ClosedScoClosed
  16. Fri16ClosedScoFright Fest55%20 min lines
  17. Sat17ClosedScoFright Fest80%43 min lines
  18. Sun18ClosedFright Fest60%24 min lines
  19. Mon19ClosedGerClosed
  20. Tue20ClosedGerClosed
  21. Wed21Best dayClosedGer58%Estimate22 min lines
  22. Thu225pm - 11pmGerFright Fest60%Estimate23 min lines
  23. Fri235pm - 11pmGerFright Fest61%Estimate24 min lines
  24. Sat2411am - 5pmGerFright Fest67%Estimate28 min lines
  25. Sun2511am - 10pmGerFright Fest73%Estimate34 min lines
  26. Mon26ClosedEngGerClosed
  27. Tue27ClosedEngGerClosed
  28. Wed28ClosedEngGerClosed
  29. Thu295pm - 11pmEngGerFright Fest61%Estimate24 min lines
  30. Fri305pm - 11pmEngGerFright Fest63%Estimate25 min lines
  31. Sat3111am - 5pmFright Fest66%Estimate28 min lines

How busy

  1. QuietestAmong the quietest days at this park
  2. 2 daysQuieterQuieter than a normal day here
  3. 10 daysTypicalA normal day for this park
  4. 3 daysBusierBusier than a normal day here
  5. 3 daysBusiestAmong the busiest days at this park

On the days this month

  • Opening hours
  • Rainy day
  • Light rain
  • Cold day
  • Hot day
  • Sunny day
  • Partly cloudy day
  • Cloudy day
  • Columbus Day12 Oct
  • Fright Fest2 Oct - 31 Oct
  • Kids Boo Fest / Tricks and Treats (daytime family Halloween)3 Oct - 31 Oct
  • Oktoberfest3 Oct - 31 Oct

Lines at Six Flags Great America average 28 minutes across 28 recorded days, and 50 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

  1. to 1 Nov

    Fright Fest

    On 22 selected nights · Evening event

  2. to 1 Nov

    Kids Boo Fest / Tricks and Treats (daytime family Halloween)

    On weekends

  3. to 1 Nov

    Oktoberfest

    On weekends

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 60% crowd levels.

Is Six Flags Great America busy this weekend?

This weekend Six Flags Great America is looking busy, at around 70% 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 49% crowd levels.

When is Six Flags Great America busiest in October 2026?

Monday 12th is predicted to be the busiest day at Six Flags Great America in October 2026, at around 81% 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 49%). Arriving at opening also means the shortest waits.

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

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