The CTA Blue Line provides 24-hour rapid transit train service between Chicago-O'Hare International Airport and the Forest Park terminal, via downtown Chicago.

The CTA System Map shows both CTA Bus and Rail lines, as well as connecting services provided by other transit agencies in Chicago and surrounding communities. Downloadable PDFs

Upcoming alerts 1 Blue Line Thu, Mar 12 2026 - 10:00 AM to Fri, Mar 13 2026 - 4:00 AM Boarding Change, Delays Between Damen and Clark/Lake Planned Work Blue Line trains will operate on the …

Information about CTA bus and train service in and around Chicago. Find maps, schedules, service alerts, plan a trip, jobs, news and more!

Find CTA transit route information and bus and train route timetables and schedule information.

Pay close attention to destination signs and announcements when boarding and riding: some trains on some lines may not travel the full length of a line as part of schedules or interval management.

Use CTA Train Tracker for estimated arrivals at your stop or see CTA trains on a map.

Blue Line trains will operate on the same track between Damen and Clark/Lake, resulting in a boarding change and minor delays.

At the Chicago transit authority, we offer you two different ways to plan your tip with us. We forms for Google Transit and RTA both offering schedule-based travel information for CTA, Metra, and Pace.

The CTA Blue Line provides service directly to and from O'Hare Airport. The accessible O’Hare station is situated in the lower level concourse, which connects directly to Terminals 1, 2 and 3, and can be …