Frontier Airlines only operates from Terminal 1 of O'Hare Airport, which is located near Terminal 5. Terminal 1 has six gates that are numbered 1-6. If you are flying with Frontier Airlines from Terminal 1, your boarding pass will have an exit gate number that corresponds with your actual boarding gate number. You can find your exit gate number on your boarding pass by looking at the top right corner of your boarding pass. It is not uncommon for airlines to have different gate numbers in Terminal 1 than they do in Terminal 5. This is because Terminal 1 has more gates than Terminal 5. You can check out more details about O'Hare Airport here: https://www.iata.org/en/about/hub/o/ohare/index.html
###