Delta and Alitalia offer San Jose SJC to Rome for as low as $336 round trip with no frills or $436 includes free seat selection and one checked bag for travel departures from mid-February to March. The price goes up to low $400s/$500s for April and early May, and August to early October departures, then price drops back to $300s/$400s for late Oct-Nov.
Delta/Alitalia San Jose SJC – Los Angeles LAX – Rome FCO – Atlanta ATL – San Jose SJC
$435.45 round trip including seat selection and checked bag
Or you can take only carry-on and play seat roulette to fly cheaper in Economy Light. I usually do okay with seat roulette, except Kelley and I ended up in two middle seats on a totally packed aircraft for our December flight SFO to FRA. You can’t always get what you want. But we did get what we needed. A flight to Europe.