Originally Posted by bgriff

I assume your BOS-FCO flight is on Alitalia? If so, you should be aware that you will have to change terminals and re-clear security in Boston, since Delta operates in Terminal A while Alitalia operates in Terminal E. The easiest way is to take the walkway through the parking garage, more information here: https://www.massport.com/logan-airpo...ort/terminals/

However, a Delta to Alitalia connection would also require a terminal change and security re-clear at JFK, so you are not too much worse off. If schedule changes allow you to get onto the Delta JFK-FCO flight, that would be somewhat easier. Good luck.