Spirit Airlines Boston Terminal is based out of Boston Logan's Terminal B, which is conveniently located and easily accessible from all throughout the city. Known for its state-of-the-art amenities and well-thought-out layout, Terminal B serves a lot of domestic aircraft. There are many of short- and long-term parking alternatives close to Terminal B if you're driving to the airport. In order to facilitate transfers between parking lots and the terminal, the airport also offers shuttle services. The Silver Line and Blue Line of the MBTA provide excellent connections between Boston Logan and other public transit hubs.