I thought I'd asked this already but if I did, I can't find my OP so I'll ask again and apologize for repeating myself.
Our flight home from Italy Sept 30 is Delta 1044 from Rome to JFK. But even tho I booked it with Delta as a Delta flt, it'll be operated by Alitalia as an Alitalia flight with an AZ flt no ( which I forget) as well as the DL no.
So where do we go first, to check in? T5 for Delta or straight to T3 for Alitalia?