Fly Chicago is an excellent website that has information on all aspects of traveling by air through both of the Chicago airports, O'Hare and Midway including parking getting from one airport to the other, and frequently asked questions. The website for the city of Chicago also has a parking guide for O'Hare Airport.
926 miles
OHARE airport
Honolulu International Airport has six runways.
Chicago's O'Hare International Airport.
Midway Airport
Parking at O'Hare International Airport is only free if a vehicle is parked for under ten minutes. After that, the rate increases by $2.00 an hour for each hour the vehicle is parked in an O'Hare lot. However, there are economy lots available which provide discounted rates.
About 31 road miles.
Taxi from ohare airport
50 cents to $5
I'm gonna hazard a guess at no.
Yes, long term and short term.
You can not fly from O'Hare airport to Chicago because O'Hare airport is in Chicago.