Traffic heading in on 376 is a complete nightmare on sundays before a game. It does flow fairly well but its still bumper to bumper so if you're headed into the city, allow yourself atleast an extra 2 hours just to be safe, in addition to however early you want to get there before kickoff. Thats what we always do and we're usually pretty safe.
Although if we're gonna really tailgate, hell we get there at 8am or for a night game we're there by 4 or 5pm !!