There's no nonstop path linking the Lowcountry to the Amalfi's southern gateway, which means the real decision on business class from Charleston to Naples isn't which airline to fly, but which European hub you trust to make the connection painless. In practice, that means routing through Frankfurt or Munich on Lufthansa, through Rome or Milan on ITA Airways (AZ), or via Paris on Air France—each carrier requiring a domestic or transatlantic hop out of CHS before the long haul across the Atlantic. Lufthansa's widebody fleet on the transatlantic leg increasingly features the new Allegris business class suites with sliding doors on select 787 and A350 routings, though older 747-8 and A340 configurations with the classic lie-flat seat still appear seasonally, so it's worth checking your specific aircraft before booking. ITA Airways, as Alitalia's successor, flies A330s with fully flat business seats direct into Rome Fiumicino, which is arguably the smoothest onward connection to Naples given the frequent Alitalia-legacy shuttle flights and high-speed Frenecce rail links from Roma Termini.
Having flown this corridor more times than I can count, my strong preference is routing through Rome rather than Frankfurt or Paris when Naples is the final destination—Fiumicino's connections to NAP are more frequent and the walk between international arrivals and domestic departures is far less punishing after an overnight flight. An insider tip few mention: if you're connecting through Frankfurt on Lufthansa, request the shorter walk gates in Terminal 1's Concourse A for the Naples-bound feeder flight, since Concourse Z transfers can eat 25 minutes you won't have on a tight connection. Air France's routing via Paris CDG offers a genuine alternative if you're a Flying Blue loyalist, with their 777 business cabins now largely refreshed, though I'd avoid tight sub-90-minute connections at CDG during peak summer congestion.
April, May, September, and October remain the sweet spot for this itinerary—not just for lighter Naples crowds and Amalfi Coast weather, but because European carriers often loosen premium cabin award space and revenue fares in these shoulder windows before summer demand spikes. Given how much routing and aircraft variability exists on this itinerary, I'd strongly recommend setting up fare alerts rather than manually checking, since business class availability from Charleston to Naples shifts week to week depending on which hub and aircraft the airlines deploy.
