There's no nonstop route between Sicily and the American Southwest, so business class from Phoenix to Catania always involves a strategic hub connection—and that's precisely what makes this itinerary interesting to plan well. The most reliable routing runs through Delta and its partners via Atlanta or JFK, connecting onto a transatlantic leg into Rome or another European gateway before the short hop down to Sicily, while Lufthansa routes typically funnel through Frankfurt or Munich, and Alitalia's successor ITA (still ticketed in some markets alongside AZ codes) offers Rome Fiumicino connections that shave time off the final approach into Catania.
For the transatlantic segment, Delta's A330-900neo and A350 business class cabins—with their staggered, all-aisle-access suites and sliding privacy doors—represent the most comfortable long-haul product you'll find on this corridor, and I've found the A350 configuration particularly quiet during the overnight push across the Atlantic. Lufthansa's fleet mix is more variable; you may encounter the newer Allegris business suite on select 787 or A350 rotations, though older 747-8 and A340 business seats (still reverse-herringbone, still solid) remain common on Frankfurt and Munich departures, so it's worth checking your specific aircraft assignment before booking. My insider tip: build in at least a two-hour connection window in Rome or Milan for the final leg to Catania, since Sicilian airport ground handling can be slower than mainland Italian hubs, especially in peak summer months when Catania's single-runway operation strains under charter and leisure traffic.
Shoulder season—April, May, September, and October—consistently delivers the best business class availability and value on this route, as Sicily's tourist crush eases and airlines adjust award and revenue seat allocations accordingly. Given the complexity of routing through Atlanta, Frankfurt, or Rome, fares fluctuate more than on simpler city pairs, so setting up automated fare alerts for Phoenix to Catania business class is the smartest way to catch the inevitable pricing dips before they disappear.