List of Sonic Stores in Florissant, MO Outlet Note Regular Brands Sonic Missouri Florissant Rating 4.5 based on 91 votes Official Website https://www.sonicdrivein.com/ Products Snacks Ice Cream Drinks Chicken Hot Dogs Burgers NameAddressPhone Name/Address/Phone Sonic outlet - Florissant 13947 New Halls Ferry Rd (314) 837-9100 People Also Viewed