Now it is easier than ever to park at the Ottawa International Airport. You can reserve your parking in advance, or pick your spot once you are there. Either way you Save! Reserve Online: Simply enter your CAA Membership number into the CAA Promotion Code box and proceed with the reservation as normal. Park on Arrival: Insert your CAA Membership card into any of the Ottawa Airport’s exit locations or Pay-on-Foot kiosks and receive your discount off the standard, drive-up parking rates.