I'd assume AA would be your first choice. As a backup, AA and DL have ZED with eachother. DL has daily nonstops ATL-FCO, JFK-FCO, CVG-FCO, plus, a few times a week we have JFK-VCE and JFK-PSA.

Plus we have flights to a large number of cities in Europe, that you could connect with AZ(if they're still around then) or whoever.

Whatever options you decide on, just post a topic in the checking loads forum, or for DL PM me. People usually respond quickly and quite helpfully.