The Air Canada Booking Phone Number Chicago Airport is a direct line to the help center, which helps the crowded flyers at Chicago O'Hare International Airport. By means of this number, a great majority of commonly requested items such as booking of tickets, or changing and finding out details of those already booked can be achieved within a short space of time. It is an additional source of information for passengers who are on a lookout for issues relating to the carry-on allowance, issuance of travel documents, or the flight that has been delayed. The team is fully equipped to execute every booking-related query issue smoothly with minimal trouble for the passenger.