Bari's Karol Wojtyła Airport remains a delightful anomaly on the transatlantic map — a Puglian gateway with no nonstop American service, which means every itinerary in business class from Boston to Bari requires a thoughtful connection. The most reliable routing pairs Delta's transatlantic metal out of Boston with a European partner for the final hop: Delta operates its A330 or A350 with fully lie-flat Delta One suites nonstop to Amsterdam or Paris, while Lufthansa runs its Frankfurt and Munich hubs as the classic bridge into Italy, sometimes on aircraft featuring the new Allegris business cabin on longer sectors, though most BOS-BRI connections will see you on a Lufthansa regional jet for the short intra-European leg. Alitalia's successor, ITA Airways (still commonly grouped under AZ code), offers Rome Fiumicino as arguably the most elegant connection point, with its A330neo business class cabin providing a genuinely Italian touch before the final short hop down to Bari.
Having routed through all three hubs repeatedly, I'd steer discerning travelers toward Rome as the connection of choice — not just for ITA's cabin service, but because Fiumicino's domestic transfer process into the Bari flight is markedly smoother than navigating Frankfurt's sprawling terminals on a tight layover. My insider tip: book the Rome-Bari segment as a separate short-haul business fare if award space is scarce on the connecting itinerary — ITA frequently opens up single seats on this regional route independently of the long-haul inventory, effectively letting you patch together a premium journey that shows as sold out when searched as one ticket.
Shoulder season—April, May, September, and October—rewards patient travelers with both better fares and the added bonus of Puglia's countryside in its most photogenic state, before summer's heat or winter's quiet. Given how fragmented and fare-class-dependent these three-carrier itineraries can be, setting up automated alerts across Delta, ITA, and Lufthansa is the smartest way to catch the rare moments when premium inventory and pricing align.