IHG One Rewards. It's better to be a member. Join IHG One Rewards to unlock benefits that will immediately enhance your next stay. Six Flags Hotel Features Family-Friendly Holidome. Located off I-44 at exit 261, the newly renovated Holiday Inn Saint Louis West at Six Flags is just steps from the gate of Six Flags St. Louis, an action-packed adventure park with exhilarating thrill rides and loads of fun for kids of all ages. Our free shuttle allows you to save $25.00 a day on Six Flags parking. Discount Six Flags tickets available at the front desk. Our Kids Eat Free program allows families with two kids 12 and under to save $50 per day. Kids 12 and under eat free off the childrens menu in the Haymarket Restaurant. Valid for up to 4 children per adult meal, all meals. The Haymarket Hours change seasonally so please contact the hotel for hours. Six Flags Theme Park open through December on weekends. Please check their website for theme park schedule. During your visit, you and the family will love our indoor Holidome. The pool, sauna and whirlpool are a great way to relax. But don't miss the fitness center, games area, putting green and shuffleboard court. Rain or shine you will enjoy our indoor activities. After a day of fun, dine at our Haymarket Restaurant where kids under 12 eat for free. Experience the Ski, Tubing and the New Zipline at Hidden Valley seasonally. Nearby companies include MidAmerica Testing, Byerly RV, Cenveo, Rotometrics, Purina Farms and Ameren Labadie. Campgrounds include KOA and Yogi Bear's Jellystone Park.