There are two:
Logan International Airport (BOS), Leonardo da vinci-Fiumicino Airport (FCO)
No.
American Airlines, United Airlines
The only direct flights from the USA to Venice are by Delta airlines from New York (JFK) airport. The flight takes about ten hours.
The flight distance for direct flights (if available) is 445 miles.
The flight distance for direct flights is 3,593 miles.
There are no direct flights to Florida from Boston, Massachusetts. You can however fly from Boston to St. Paul, Minnesota, and then from St. Paul to Orlando, Fl.
Depends where in Italy you fly from. There aren't any direct flights operating right now so you will have to fly to London first (about 2 hours from Milan) from London it is about 9.5 hours to Vancouver on most flights.
There are no direct flights from Boston to Slovenia, you can fly to one of the connecting aiports (Munchen, Frankfurt, Amsterdam, London, Paris, ...) The flights from these airports are from 1h-2h long (Munchen being the shortest and London being the longest).
For direct flights, about 14.75 hours flying time. This is time 'in the air' and excludes ground activities.
For direct flights, about 6 hours flying time. This is time 'in the air' and excludes ground activities.
Southwest has direct flights from Nashville to Denver.
For direct flights, about 7.5 hours flying time. This is time 'in the air' and excludes ground activities.