Blue Line ‘L’
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.
On this page:
Hours of operation
|Between O'Hare & Forest Park
(via downtown subway)
|O'Hare to Forest Park
Service at all times, every day
|Forest Park to O'Hare
Increased Capacity for Lollapalooza 2021
Increased service and capacity will run for Lollapalooza on the Red, Brown, Green, Orange, Blue and Yellow lines.
No overnight train departures from O’Hare station
No Forest Park-bound Blue Line trains O'Hare-Rosemont, midnight to 4am, nightly. Trains still run to O'Hare stn & rest of line 24/7 + bus O'Hare-Rosemont avail.
RSS Feed: Blue Line Alerts
with stations & connection information
This diagram represents the order of stops along this route (not the route's natural geography).
Click a station name for more information, including detailed transfer information, a map, alerts for that station and detailed station timetables.