ORD stands for orchard, since there used to be an orchard there. hope this helps! ;)
You can not fly from O'Hare airport to Chicago because O'Hare airport is in Chicago.
Chicago Ohare to Grand Rapids is about 45 minutes.
Chicago's O'Hare International Airport.
From CARDIFF Airport to CHICAGO OHARE INTL 6817.7 nautical miles
OHARE airport
About 31 road miles.
very busy like Chicago Ohare.
Alot depends on when you want the car and where you are asking for it in chicago (2 different airports). This site here will give you a price on renting a car at the ohare international airport http://rentalcars.priceline.com/car-rentals/chicago---ohare-international-airport.html.
car ,plane, walk, ats bikee
The average time is 14-15 hours.
Midway Airport
ORD CHICAGO OHARE,IL,USTOVIE VIENNA,AT 4717 MI/ 7591 KM NE