Round trip train routes/ round trip flights from Venice to Bari

There’s a direct train from Venezia SL at 6:52am that takes 7.5 hours. It’s a fast train; I wouldn’t consider taking anything slow. Otherwise, if you’re going later in the morning, you are making a connection at Bologna, and that’s a multilevel station - not my favorite but doable. I just prefer knowing I’m not missing the second train when that’s a major distance to cover.

I love the Puglia area - going soon for the third time, but if I had to take one full day to get there and another full day to get back to Venice just for 5 days in the Puglia region, I wouldn’t do it. There’s plenty of amazing cities within an hour or two max from Venice that essentially give you an extra two days to be out enjoying Italy.

We haven't seen much in the way of direct Airline flights between Bari, Italy and Venice.

Looks like ryanair has direct flights.

Google flights shows several direct on Ryanair

ITA has flights wth stopover at FCO