The Chicago Transit Authority's Orange Line serves the Southwest Side of Chicago and connects Midway Airport with downtown Chicago in about 30 minutes.  At the airport, follow signs from the airport terminal to the rail station.  Take the Orange Line from Midway to LaSalle Station which is located just behind the Chicago Board of Trade.

The Chicago Transit Authority's Blue Line provides 24-hour access between downtown Chicago and O'Hare International Airport. Trains run approximately every 10 minutes and the ride is about 45 minutes.  The CTA station is located at the lowest level of the Main Parking Garage (next to elevator center 4) and is accessible by pedestrian tunnels located in Terminals 1, 2, and 3. From Terminal 5, take the Airport Transit System (ATS) to Terminal 3 and follow the signs.  Take the Blue Line from O'Hare to Jackson Station then walk west on Jackson to LaSalle.