Southwest Airlines Co. is a major airline in the United States that operates on a low-cost carrier model. It is headquartered in Love Field, Dallas. in the Dallas–Fort Worth metroplex, and has scheduled service to 121 destinations in the United States and ten other countries. https://community.lumivero.com/s/question/0D5Jw00000dQ7PVKA0/18668291430-southwest-check-in?language=en_US