Flight from Naples to Bari

I can recommend Trenitalia, https://www.trenitalia.com

You can check skyscanner.com for your precise travel date, but at a glance I'd say your chances of finding a non-stop flight are very, very low.

Skyscanner doesn’t show flights for the date I used. The train from Napoli Centrale takes 5h and requires a transfer. If you can pack light do so because most likely you’ll have to haul your bags down and upstairs.

The best fight, 1 stop, (no direct flights), is 4. hrs 45 min, via Milan. ( per skyscanner.com)

Depending when you arrive at NAP, there may be a choice you prefer vs the train.

Bus from Naples airport to Caserta, runs hourly, duration 31 minutes. Caserta station is not huge, maybe six platforms.
Then train from Caserta to Bari Centrale. Runs five times a day, takes 2 hrs 50 minutes.

The app Rome2rio is really handy for planning.

There are no direct flights.

Trying to find a flight from Naples to Bari is like trying to find a flight from San Jose (or Oakland) to Sacramento. You can find one, but there will be a layover in Los Angeles or Burbank, and therefore it will take most of the day.

Like in the example I just made, which should be familiar to you since you live in Danville, the best option would be the train: Amtrak Capitol Corridor from the Bay Area to Sacramento, or Trenitalia from Naples to Bari.

Too late or otherwise bad for your plans to change your flight to land in Rome, then get a flight to Bari? We’ve done that.

Look at train options instead

Yes, there are no direct flights. Take a cab to Napoli Centrale; fixed fare is €18, but you need to ask for it plus a receipt. Trains to Bari Centrale here:

https://www.trenitalia.com/tcom-en

I would also recommend the train on that route. Taking a flight for that short route will take more time and probably be a miserable experience after a long international flight.

Thank you all for your responses, it's extremely helpful and much appreciated!

ES

Because you want to travel on New Years Day, please be careful to check what’s running on a holiday. I suspect your options may be limited.