My son and I leave Rochester at 10 AM, meaning we cruise by the airport by around 11. Traffic on the Thruway really is not that bad. My advice though is to go past the 219, through the toll booth, then get off the 90 at exit 56 (Milestrip). We turn left onto Milestrip, then cut through the Home Depot/plaza and go right onto McKinley by Wegmans. Then take the first left onto Brompton and left onto Southwestern by ECC. You can get into Lot 3 from there or park any place along there for $10 to $15. Park on the left of Southwestern though so you take all rights out of there. Just reverse it on the way out.
20+ years of experience talking here