Pisa's compact Galileo Galilei Airport rarely sees premium widebody service directly from the US, which means that anyone booking business class from Los Angeles to Pisa needs to think in terms of connections rather than nonstops. There is no single-carrier direct routing here; the smart money runs through Delta's transatlantic joint venture with Air France-KLM via Amsterdam or Paris, through Lufthansa's Munich or Frankfurt hubs, or via Alitalia's successor ITA Airways connecting through Rome. Of these, I've found the Lufthansa routing most consistently rewarding, especially now that select long-haul aircraft feature the new Allegris business class suite with a closing door — though on this specific corridor you're more likely to encounter the reliable older business seat on the 747-8 or A340 fleet, still a comfortable lie-flat product with excellent Munich transfer efficiency.
Twelve hours in the air (plus a connection) demands a strategy, and my strongest insider tip is this: fly into Rome or Florence rather than forcing a same-day Pisa connector — ITA's regional jets into Pisa are infrequent and prone to schedule shuffling in shoulder season, so building a buffer night in Florence and taking the train to Pisa (under an hour) is far less stressful than white-knuckling a tight connection after an overnight flight. Munich transfers tend to be smoother than Frankfurt for onward Italy connections, with shorter walks between Schengen gates.
April, May, September, and October are the sweet spot here, not just for weather in Tuscany but because carriers price this corridor more aggressively before and after the peak summer crush, when leisure demand to Italy spikes hardest. Given the routing complexity and the way fares on Delta, Lufthansa, and ITA fluctuate with connection quality, this is a route where setting fare alerts pays real dividends — letting the deals come to you rather than chasing them manually.