Southwest Airlines BOS Terminal is based out of Terminal B at Boston Logan International Airport (BOS). Nestled in East Boston, Massachusetts, Logan Airport is one of the busiest airports in the country, handling millions of travelers each year. Traveling from a terminal where Southwest operates can be made much more enjoyable if one is familiar with its layout and details. We’ll go into great detail about Terminal B’s amenities, the traveler experience, and advice for a hassle-free Southwest Airlines journey.Â