Departing to Madrid at 6:30 am Iberia flight. How early do I need to be at the airport and realistically get checked in. I have heard many different times and Iberia site is not helpful.
The first bus from Piazzale Roma is at 4:35 am M-Sat and gets to the airport at 4:56. I doubt that there will be anybody to check you in until 5:00 am.
Though not on Iberia, I've taken multiple flights out about the same time. Unsure if you plan on using the bus, but first bus actually leaves Piazzale Roma at 04:20 (ATVO bus) every day, and gets to the airport about 04:40. This is how I got there on my trips. The check-in counters were already open. I had plenty of time to check-in for my flight,
and enjoy a final cornetto and espresso before boarding began.
Thank you!