Determine the terminal that you will be traveling to at Boston's Logan Airport. Also determine the closest subway, or "T" stop as it is called in Boston, to where you will be departing.
Travel to one of three stops once you are on the T at your departure stop. If you are departing on the Orange Line or Red Line, make your way to the State Street stop on the Orange Line. If you are departing on the Green Line, make your way to the Government Center stop on the Green Line. These are the stops where you will connect with the Airport's Blue Line trains. If you are already departing from the Blue Line, make your way to the Airport stop by taking the blue line towards the Wonderland stop, and then skip to Step 4.
Change trains at your connection stations if you were traveling on the Orange, Red, or Green lines (mentioned in Step 2). Travel towards the Wonderland Stop on the Blue Line. You will get off at the Airport Stop.
Go upstairs to the street level once you have exited the train at the Airport Stop. Outside of the turnstiles, you will wait for Bus #66, which is the bus that takes you to the different terminals at Logan Airport. This shuttle bus is free.
Get off the bus at the terminal that is your final destination at Boston's Logan Airport.