Typically, radio stations offer 18 minutes of advertising time per hour, of which businesses can purchase ad air time for 15 seconds, 30 seconds or 60 seconds. Once your ad has been created and edited to the appropriate length, it’s time to choose a station for your ad to play on, the time you plan to buy air time for, and how often you want your ad(s) to play. Buying air time on a radio station is a fairly quick process. First, research radio stations and their audiences to decipher which station(s) will offer your business the best results. Consider what current ads are played on the station and ask for a media kit from the station when available. After choosing where your ad will air, determine what air time slots will benefit your brand most.