Terminal 5, the international terminal. Terminals 1, 2, & 3 are connected.
BTW, there is NO Terminal 4.
The International Terminal.
car ,plane, walk, ats bikee
Chicago's O'Hare International Airport.
You can not fly from O'Hare airport to Chicago because O'Hare airport is in Chicago.
OHARE airport
CHECK OUT THE MAP OF OHARE. YOU WILL SEE IT QUITE DISTINCTLY AND THERE ARE SIGNS IN THE BAGGAGE PICK UP AREA DIRECTING YOU TO THE BUS DEPOT.
Midway Airport
About 31 road miles.
From CARDIFF Airport to CHICAGO OHARE INTL 6817.7 nautical 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.
The Chicago O'Hare International Airport is located in the northwestern corner of Chicago, Illinois. O'Hare is the fourth busiest international airport in the US and flies to more than sixty foreign destinations.