Ground Transportation at O'Hare - CTA/Metra Trains, ATS Chicago Transit Authority (CTA) train information, fares and schedules, ADA Friendly Services. Airport Transit System (ATS) - travel between terminals at O'Hare Go to the City's Website for other transportation related information.
Chicago Transit Authority (CTA) train information, fares and schedules, ADA Friendly Services. Airport Transit System (ATS) - travel between terminals at O'Hare Go to the City's Website for other transportation related information.