nano404

Hi. On the 29th of April I'll fly into Chicago at 3:30PM (International Flight). I'm leaving for Miami at 7:40PM. Little over 4 hrs.

I've never been to Chicago and I'd like to go out of the airport, probably just to get something to eat and go back. Not sure how much time I'd have though. I'm traveling on a foreign passport if that helps you get an idea of immigration and customs times etc.

Also, is there any place that I can securely store my carry-on as I venture out or do I just carry it with me?

Thanks for the help!