Sixt
Cleanliness
Comfort
Overall
Pick-up/drop-off
Value
National
Cleanliness
Comfort
Overall
Pick-up/drop-off
Value
Avis
Cleanliness
Comfort
Overall
Pick-up/drop-off
Value
Hertz
Cleanliness
Comfort
Overall
Pick-up/drop-off
Value
Eagle Rent A Car
Chicago Van Rentals
Goldcar Rental SP
Rhodium
Yes, hiring a vehicle at O'Hare - International for a month is certainly possible.