Bari's Karol Wojtyła Airport isn't built for transatlantic arrivals, which is precisely why the routing puzzle from Silicon Valley to Puglia rewards careful planning. There's no nonstop option here — business class from San Jose to Bari always involves at least one connection, typically routed through Amsterdam, Rome, or Frankfurt, with total journey time hovering around 13 hours of flying once you account for the transfer. Delta passengers departing SJC will usually connect via a European gateway onto a partner carrier, while Lufthansa routes naturally funnel through Frankfurt or Munich before a short intra-European hop down to Bari. Alitalia's successor ITA Airways also serves the Rome-Bari corridor well, making Fiumicino a logical staging point if you're flying Delta's transatlantic joint-venture metal and switching to an Italian carrier for the final leg.
The real decision point is which long-haul product you fly across the Atlantic, since the Bari feeder flight is short and seatless in terms of flat-bed luxury. Lufthansa's push toward its new Allegris business class cabin (still rolling out fleet-wide, so check aircraft type before booking) offers doors and adjustable panels on select 787 and A350 routes into Frankfurt or Munich, while Delta's A330neo and A350 aircraft feature the Delta One suite with sliding doors on many transatlantic frames — a meaningful upgrade if your itinerary touches JFK, Boston, or Atlanta en route to Europe. My insider tip: build in a minimum 2.5-hour connection in Rome or Frankfurt if switching from a widebody to a narrowbody European carrier, since Bari-bound flights often depart from remote stands requiring bus transfers, and tight connections here are a common source of missed luggage.
April, May, September, and October remain the sweet spot for this corridor — shoulder season in Puglia means comfortable weather without the August crush, and business class award space on the transatlantic legs opens up more generously outside peak summer. Given the multi-carrier complexity of this itinerary, setting fare alerts across Delta, Lufthansa, and ITA is the smartest way to catch the right combination before it disappears.