Providence's little Green Airport doesn't have a single widebody parked at its gates, which is precisely why the smartest routing for business class from Providence to Turin starts with a short domestic hop rather than a long slog. There is no nonstop option here — the practical fact is that Providence to Turin business class travel always requires a connection, typically through JFK or Boston for Delta, or through Rome or Frankfurt if you're building an itinerary on Alitalia's successor ITA Airways (AZ) or Lufthansa (LH). I've routed this trip a dozen different ways over the years, and the Frankfurt connection on Lufthansa tends to be the most seamless for onward travel into Turin, since LH's regional jets serve the city directly and Frankfurt's business lounges make a long layover tolerable rather than punishing.
The transatlantic leg is where the real decision lives. Delta's Boston or JFK departures can put you into a Delta One suite with a closing door — a genuine flat-bed product that makes the ~9-hour transatlantic haul feel manageable, and codeshare/partner ticketing with Air France-KLM sometimes opens up Charles de Gaulle as another viable gateway into Turin. ITA Airways, meanwhile, has been slowly rolling out updated business cabins on its long-haul fleet, and routing through Rome Fiumicino lets you finish the journey on a short, comfortable AZ regional flight rather than a rushed connection.
My insider tip: build in at least a two-hour buffer at whichever European hub you choose, since Turin's connections from Frankfurt, Rome, or Paris run on limited daily frequency, and missing one means waiting until the next day. Shoulder-season months — January through March and October into November — consistently offer softer business class availability and better award space on all three carriers. Given how much these fares swing week to week, setting up automated fare alerts for this specific routing is the only reliable way to catch the best business class value before it disappears.