There's no nonstop path linking Bradley International to Piedmont's capital, which means business class from Hartford to Turin always involves a routing decision that shapes the entire journey. My preferred itinerary runs through Frankfurt or Rome, since Lufthansa's connection via FRA offers a shot at the Allegris business seat on the transatlantic leg (still rolling out fleet-wide, so it pays to check equipment before booking), while Delta's partnership routing through JFK or Boston into Rome pairs with Alitalia's successor, ITA Airways, for the short Fiumicino-to-Torino hop. Delta's own long-haul product—the A330-900 or 767 business suites with direct aisle access on the larger jets—handles the transatlantic segment reliably, and I've found their JFK connections from BDL tend to be the least stressful of the three carrier options.
Lufthansa's Frankfurt hub rewards travelers who arrive with a two-hour buffer, since the Star Alliance business lounges there are vast but the walk to remote gates for regional aircraft can eat up more time than expected; I always budget extra when the Turin connection departs from a bus-gate position. ITA Airways, having absorbed Alitalia's Rome-based network, now operates the Fiumicino-Torino shuttle with reasonable frequency, and their short-haul business cabin—typically a blocked middle seat with enhanced service—is perfectly adequate for the under-hour flight. My insider tip: book the earliest morning Rome connection you can find, since afternoon Turin flights from FCO are more prone to the seasonal thunderstorm delays that plague central Italy from June through August.
January through March and again in October and November consistently offer the softest fares on this corridor, as Piedmont's wine and truffle tourism season winds down and before ski traffic to the Alps ramps up. Given how fragmented pricing can be across three carriers and three possible hubs, setting up automated fare alerts is the smartest way to catch a Hartford-Turin business class fare drop before it disappears.