Wondering what terminal Southwest is at BNA? Southwest Airlines operates exclusively from Concourse C at Nashville International Airport (BNA). This complete guide to the covers everything from check-in and security to dining and parking. Whether you're flying out or arriving, knowing your way around the BNA Southwest Terminal helps ensure a smooth, stress-free experience. The Southwest BNA Terminal is well-equipped with modern amenities, fast TSA access, and plenty of food and shopping options. Ideal for both business and leisure travelers, the terminal is easy to navigate and centrally located within the airport. Read on to find out all you need to know about the Southwest Airlines BNA Terminal before your next trip.