The following is a description of three different ways to get from Boston Logan Airport to the Black Falcon Cruise Terminal.
Taking a taxi may be the best option from the stand point of convenience, especially if you have allot of suit cases, which is the case for most people. The least expensive option is a Silver Line Bus.
To take the Silverline bus from Boston Logan Airport take an SL 1 Bus to Silver Line Way. Then take an SL2 bus to the Dry Dock Ave. Stop. The Cruise Terminal is located on Black Falcom Ave.next to the Design Center.
If you like you can also take a water taxi to Black Falcon Cruise Terminal. The cost for this is likely to be slightly more expensive than a taxi.
Trinity Reservations offers a few hotel options that include free long term parking and free shuttle to and from Boston Logan Airport.
We hope this was helpful to you.