If you plan to smoke before your flight, it is helpful to understand the airport's policy in advance. Smoking at Chicago Airport is not allowed inside the terminal buildings, including gate areas, restaurants, lounges, and restrooms. Travelers who wish to smoke must use designated outdoor smoking areas outside the terminals before passing through security. Once you have entered the secure area, there are no indoor smoking facilities available. If you decide to leave the terminal after clearing security, you will need to complete the screening process again before returning to your gate. Arriving early can help you avoid unnecessary stress.
