Do you have a Southwest flight from St. Louis? Proceed directly to Terminal 2, also referred to as the STL Airport Southwest Terminal. Both frequent and first-time travelers will have a seamless experience at this terminal, which is designed to support Southwest's effective boarding procedure. Self-service kiosks, free Wi-Fi, and accessible boarding gates are just a few of the many traveler services it provides. After security, there are restaurants and stores. The Southwest Terminal at STL Airport is renowned for its well-kept design and welcoming environment, making sure your journey starts off comfortably and easily as soon as you arrive at the airport.