Six Flags St Louis hours

22 published datesLocal time (Chicago)

Next open on Saturday 12 September from 12:00 – 23:00. Most days it opens at 12:00.

Next open day

12:00 – 23:00

Next open on Saturday 12 September, open for 11 hours.

See Six Flags St Louis wait times right now

Typical hours by day of the week

Across the next 22 published dates. Individual days vary - check the calendar below for the date you are visiting.

Friday18:00 – 23:00on all 6 published Fridays

Saturday12:00 – 23:00on all 8 published Saturdays

Sunday12:00 – 21:00on all 8 published Sundays

Six Flags St Louis hours, September 2026

Sat 12 12:00 – 23:00

Sun 13 12:00 – 21:00

Sat 19 12:00 – 23:00

Sun 20 12:00 – 21:00

Fri 25 18:00 – 23:00

Sat 26 12:00 – 23:00

Sun 27 12:00 – 21:00

Six Flags St Louis hours, October 2026

Fri 2 18:00 – 23:00

Sat 3 12:00 – 23:00

Sun 4 12:00 – 21:00

Fri 9 18:00 – 23:00

Sat 10 12:00 – 23:00

Sun 11 12:00 – 21:00

Fri 16 18:00 – 23:00

Sat 17 12:00 – 23:00

Sun 18 12:00 – 21:00

Fri 23 18:00 – 23:00

Sat 24 12:00 – 23:00

Sun 25 12:00 – 21:00

Fri 30 18:00 – 23:00

Sat 31 12:00 – 23:00

Six Flags St Louis hours, November 2026

Sun 1 12:00 – 21:00

Hours come from Six Flags St Louis's own published schedule and are checked on every update to this site. Parks change hours at short notice, especially for weather and special events - confirm on the day with the park before you travel.

Six Flags St Louis hours: common questions

What time does Six Flags St Louis open?

Six Flags St Louis most often opens at 12:00. Across its next 22 published dates the opening time is 12:00 more than any other, though it varies by season and event - the calendar on this page lists every date individually.

What time does Six Flags St Louis close?

Next open on Saturday 12 September from 12:00 – 23:00, an operating day of 11 hours. Closing time changes through the season - later in summer, earlier in winter - so check the date you are visiting in the calendar above.

How busy is Six Flags St Louis on the day I am visiting?

Opening hours tell you when the gates are open, not how long the queues will be. The Six Flags St Louis crowd calendar forecasts how busy each date will be, and the live board shows every ride's wait time right now.