re: How long does it take to drive from Naperville to o'hare on friday at 5pm?

To note, all of our interstates are referred to by names. You'll most likely catch traffic on the Tri-State (294), but consider yourself extremely fortunate that you'll skip the Eisenhower (290) and Kennedy (90). Those will be an absolute mess. All said, I wouldn't worry about missing your flight unless something catastrophically goes wrong.