Comfortable Accommodations Holiday Inn Express Hotel & Suites St. Louis West-O'Fallon by IHG in O'Fallon offers air-conditioned rooms with private bathrooms, tea and coffee makers, and free WiFi. Each room includes a work desk, TV, and wardrobe. Leisure Facilities Guests can enjoy a fitness center and indoor swimming pool. Additional amenities include a lounge, minimarket, business area, and outdoor seating. Convenient Location Located 18 mi from Hollywood Casino St. Louis and 21 mi from Six Flags Over Mid-America, the hotel is near attractions such as Weldon Spring Site Interpretive Center (3.7 mi) and Fort Zumwalt Park (6.8 mi). St. Louis Lambert International Airport is 24 mi away. Guest Favorites Guests appreciate the breakfast provided by the property, the value for money of the food, and the convenient location.