Boston Logan Airport (BOS)
Logan Airport is just north of downtown across an inlet of Boston Harbor. MBTA provides subway and bus service to downtown Boston from the airport.
MBTA Silver Line bus
The bus line provide service between the airport terminals and South Station with stops at the convention center and world trade center. The Silver Line Bus has a transfer to the subway system at South Station. This route is shown on the map. There is also a shuttle bus to a subway stop which may be a better choice depending on where you are going in Boston.
Go to Boston Google Map to input travel times and destination when you will be in Boston. The Silver Line Bus or the subway route will show up as a preferred route depending on time of day and destination.