ushumgal
Alitalia W11 Long-Haul Operation Changes as 07JUL11: Chicago & Los Angeles Suspension | AIRLINE ROUTE
This has been a popular topic on another forum due to the
fact as mentioned in the link it was almost 50 years old.
Although it says suspension and not cancelled for good.
Well no alternatives via Rome but perhaps Skyteam could
route you via CDG or AMS.
Although the same source as above has Air France reducing
CDG-ORD but only by one flight a week.
For January on a Tue/Thu/Sat the AF site is showing UX to CDG
and DL to ORD with 1 hour 10 connection 09.25 dep ex AGP.
Too many Skyteam transatlantic short-term reductions to list
but at least there are alternatives.