Originally Posted by
rustykettel
You'll have to go landside to get to E and then reclear security. JL doesn't participate in PreCheck. You can either walk (long way around or possible confusing walk through the central parking area) or take the airport shuttle through the loop.
Take close note of this! The terminal swap is similar to a terminal swap at JFK (although its walkable at BOS if you cut through the parking garage, which is what I'd do) Be sure you budget a chunk of time, especially if you cant wrangle precheck.