Southwest launched a new promotion offering a companion pass – which allows pass holders to fly a friend for free – to Atlanta residents only, if they meet certain requirements. The deal is only for people living in these zip codes, who purchase three qualifying round trips on the airline from Hartsfield-Jackson beginning today until May 17.

Southwest describes the Rapid Rewards promotion’s qualifying round trips as those that are a revenue flight from Atlanta to a “destination city, including any intermediate stops and/or connections on Southwest Airlines, and back to Hartsfield-Jackson International Airport within the same reservation.”