The main operations for Southwest Airlines BOS Terminal at Boston Logan International Airport. terminal has a number of facilities, such as lounges, restaurants, and retail stores. Major U.S. destinations are served by the majority of Southwest's domestic flights. Security lines are usually well-organized, and the check-in area is simple. Free Wi-Fi is available to travelers while they wait for their flights. Additionally, Terminal B has excellent connections to other portions of the airport, giving passengers easy access to a variety of locations.