Above are our top recommendations for how to contact I-Pass Illinois, including their top phone number and live chat options. Below you can compare and contrast the 2 ways to contact I-Pass Illinois by looking at which ones are the fastest and which ones other customers recommend the most for solving I-Pass Illinois customer service issues as reported to us by the 50 million or so customers that come to GetHuman each year and share their experiences. You can contact I-Pass Illinois across the following mediums: Phone, Web.