Chicago O’Hare International Airport: Rent a car at the airport; Morocco is roughly 75 miles southeast via I-90/I-65 and local roads, typically 1¼–1¾ hours depending on Chicago traffic. Expect roughly US$45–100+ per day for a rental before fuel and insurance. There is no useful airport-to-Morocco public-transport transfer.
Chicago Midway International Airport: Also a rental-car arrival: about 80 miles and usually 1½–2 hours, with Chicago traffic the variable. Midway can be more convenient than O’Hare if your flight price is better, but it does not unlock a transit option to Morocco.
Indianapolis International Airport: Rent a car; it is about 115 miles southeast of Morocco, generally a 2–2½-hour drive via I-65 and connecting state roads. It is a sensible alternative for domestic flights, not a quick transfer.