I fly from EWR to Chicago every month for work and always have flights around this time. Domestic flights usually board 40 minutes before the takeoff time so I get to the airport about a half hour before boarding. I have precheck. I do the same thing coming home out of O’Hare which is always a zoo at any hour, and I’ve never had an issue making my flight at either airport. However, I don’t ever check bags, but my colleague does and gets to the airport an hour before boarding. She’s never had an issue either.