I would say the earlier the better.... there was a news story on WBZ today about a woman who drove to logan from Worcester for a 7am flight to miami.... she was there at 5AM, and after checking bags, and trying to get through security she still missed her flight... Granted... she was definitely an immigrant, and im guessing maybe english may not have been her first language... But if the airport is that crowded, especially with the news reporting that logan had 300 (and still counting) flights Cancelled today, i can only imagine tomorrow is going to be equally just as much of a Cluster F... Id rather Waste an extra hour or 2, and be inconvenienced by having to wait in the terminal than being stuck on the outside because you cant get through the security checkpoints and such in time..