Six Flags St Louis crowd calendar
Six Flags St Louis is typically moderately busy in October, averaging 50% crowd level. The quietest day is Thu 1 Oct at 20%, and the busiest is Sat 10 Oct at 79%.
Best day left in October
October 2026 is typically moderately busy at Six Flags St Louis, averaging 50% crowd level. The busiest is Saturday 10 Oct at 79%.
Six Flags St Louis is very quiet today, at around 20% crowd levels, and quiet tomorrow. This weekend is looking moderately busy.
This crowd calendar predicts daily crowd levels for Six Flags St Louis 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.
- Thu120%*Quieter
- Fri223%*Quieter
- Sat360%*Typical
- Sun449%*Typical
- Mon5Closed
- Tue6Closed
- Wed7Closed
- Thu8Closed
- Fri926%*Quieter
- Sat1079%*Busier
- Sun1171%*Busier
- Mon12Closed
- Tue13October breakClosed
- Wed14October breakClosed
- Thu15October breakClosed
- Fri16October break28%*Quieter
- Sat17October break78%*Busier
- Sun1856%*Typical
- Mon19Autumn breakClosed
- Tue20Autumn breakClosed
- Wed21Autumn breakClosed
- Thu22Autumn breakClosed
- Fri23Autumn break24%*Quieter
- Sat24Autumn break73%*Busier
- Sun25Autumn break56%*Typical
- Mon26October half-termClosed
- Tue27October half-termClosed
- Wed28October half-termClosed
- Thu29October half-termClosed
- Fri30October half-term29%*Quieter
- Sat3175%*Busier
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 St Louis
- Fright Fest runs 12 Sep to 1 Nov 2026, on Fridays to Sundays. Evening event.
- Boo Fest (Kids Boo Fest) runs 12 Sep to 1 Nov 2026, 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.
Frequently asked
How busy is Six Flags St Louis today?
Six Flags St Louis is predicted to be very quiet today, at around 20% crowd levels. Lower percentages mean shorter queues.
How busy will Six Flags St Louis be tomorrow?
Six Flags St Louis is predicted to be quiet tomorrow, at around 23% crowd levels.
Is Six Flags St Louis busy this weekend?
This weekend Six Flags St Louis is looking moderately busy, at around 55% crowd levels on average.
When is the quietest day to visit Six Flags St Louis in October 2026?
Thursday 1st is predicted to be the quietest day to visit Six Flags St Louis in October 2026, at around 20% crowd levels.
When is Six Flags St Louis busiest in October 2026?
Saturday 10th is predicted to be the busiest day at Six Flags St Louis in October 2026, at around 79% crowd levels.
How busy is Six Flags St Louis in October 2026?
On average, Six Flags St Louis is moderately busy in October 2026 - around 50% crowd levels. Weekdays are usually quieter than weekends.
Is Six Flags St Louis busier on weekends?
Yes - Six Flags St Louis 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 St Louis?
The best time to visit Six Flags St Louis is on its quietest predicted days - Thursday 1st is the quietest in October 2026 (about 20%). Arriving at opening also means the shortest waits.