CTA bus 121

Union / Streeterville Express

CTA bus 121 stop list and CTA bus tracker 121

The CTA bus 121 - Union / Streeterville Express serves {count_of_stops} bus stops in Chicago departing from {first_stop} and ending at {last_stop}. Scroll down to see upcoming bus 121 times at each stop. You can also see connecting lines for the bus 121 route at each stop, including connections to the 'L' or other transit options, so you can understand where and when to transfer. The CTA bus tracker 121 shows the next scheduled departure from the CTA. The full CTA 121 schedule with real-time tracker data is available in the app.

StopsNext departures

    The CTA bus 121 - Union / Streeterville Express route map is shown above. The route map shows you an overview of all the stops served by the CTA bus 121 to help you plan your trip on CTA. Opening the app will allow you to see more detailed information about the route on a map including stop specific alerts, such as stops that have been closed or moved. You can also use the included CTA tracker in the app to see the location of vehicles in real-time on the route map so you know when the 121 bus is approaching your stop.

    See the detailed route map

    CTA bus 121 Service Alerts

    Open the app to see more information about any active disruptions that may impact the bus 121 schedule, such as detours, moved stops, trip cancellations, major delays, or other service changes to the bus route. The app also allows you to subscribe to receive notifications for any service alert issued by CTA so that you can plan your trip around any active or future disruptions.

    See all alerts

    CTA bus 121 FAQ

    Other CTA bus schedules, routes and maps

    Other transit modes in Chicago

    Never miss your bus again. Download Transit.

    The Transit App