Terminal B of Boston Logan International Airport (BOS) is where Southwest Airlines BOS Terminalis located. With millions of passengers served each year, Logan Airport, which is situated in East Boston, Massachusetts, is one of the busiest airports in the country. Gaining an understanding of the configuration and details of the terminal where Southwest operates can greatly improve the traveler experience. Let's take a closer look at Terminal B, its amenities, the traveler experience, and some advice for a hassle-free Southwest Airlines trip.