When is the best time to go to Six Flags St. Louis?

One of the smallest Six Flags amusement parks, the park features 40 rides, including 8 roller coasters. Located just 30 miles from downtown St. Louis, it’s a popular spot for locals and tourists alike.

So when is Six Flags St. Louis least crowded? The park is open from April to October, and some days are busier than others. Here’s what kind of crowds you can expect throughout the year.

March – April

Opening Day – Six Flags St. Louis opens for its operating season on either the last weekend of March or the first weekend of April, usually drawing decent-sized crowds. Try to get there early if you’re going on opening weekend.

Weekends – The park is only open on weekends in April, and crowds typically aren’t too bad compared to the rest of the year. Sundays are less crowded than Saturdays.


Weekdays – Sundays and the weekdays before Memorial Day Weekend are your best bets for light crowds in May.

Memorial Day Weekend – Six Flags St. Louis typically gets very crowded for the Memorial Day Weekend holiday. Try to go before or after the three-day weekend to avoid the big crowds and long lines.


Summer Season – Six Flags St. Louis is open everyday in June as the busy summer season starts to begin. Try to avoid going on the weekends; Weekdays (Mondays-Fridays) are least crowded.

The earlier in June you go, the better. More schools in the area get out for the summer in mid to late-June, so the crowds tend to get worse toward the end of the month.


4th of July Weekend – The summer crowds are out in full force by July, and it’s typically very crowded for the 4th of July.

July is the busiest month at Six Flags, so there’s really not much relief from the summer crowds. If you must go, avoid the weekends.


Weekdays – The summer crowds are still around for the first week of August, but start to die down as schools get back in session. It’s least crowded on weekdays and Sundays.


Labor Day Weekend – Six Flags St. Louis is typically very busy for the three-day weekend.

The park is only open on weekends in September, and Sundays are the least crowded days.


Fright Fest – Fright Fest takes over for the Halloween season in all of October on Fridays, Saturdays, and Sundays. The event usually draws big crowds (especially in the evening hours), so try to get there early for shorter wait times.

When do you think is the best time to visit Six Flags St. Louis? How crowded was it the last time you went? Be sure to let us know in the comments below!

Image: Edward Beavers

  • Tim

    Thanks for the info.. Me and the family are heading there this coming week for our first time (May 27 – June 1). I’m probably looking to go Tues and Wed. Spend the other days doing other thing in St. Louis, like the Arch, Science Center etc..