That massive shift comes as the Six Flags St. Louis theme park parent reported a $100 million net loss for the second quarter of 2025.

EUREKA — Kids 15 and younger must soon be accompanied by an adult at Six Flags St. Louis. The local amusement park announced the reactivation of its chaperone policy on social media Monday.

Six Flags St. Louis will reinstitute its chaperone policy this Thursday as part of a nationwide implementation at all theme parks under the Six Flags banner.