MBTA 21 bus Stop List and Next Departures
The MBTA 21 - Ashmont Station - Forest Hills Station bus serves 21 bus stops in the Boston area departing from Forest Hills / Lower Busway and ending at Ashmont / Busway. Scroll down to see upcoming 21 bus times at each stop and the next scheduled 21 bus times will be displayed. The full 21 bus schedule as well as real-time departures (if available) can be found in the Transit app.
MBTA 21 bus route map
The MBTA 21 - Ashmont Station - Forest Hills Station bus route map is shown above. The route map shows you an overview of all the stops served by the MBTA 21 bus to help you plan your trip on MBTA. 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 see the location of vehicles in real-time on the route map so you know when the 21 bus is approaching your stop.
See the detailed route mapMBTA 21 bus Service Alerts
Open the Transit app to see more information about any active disruptions that may impact the 21 bus schedule, such as detours, moved stops, trip cancellations, major delays, or other service changes to the bus route. The Transit app also allows you to subscribe to receive notifications for any service alert issued by MBTA so that you can plan your trip around any active or future disruptions.
See all alertsMBTA 21 bus Service Frequency
The next 21 bus leaves Forest Hills / Lower Busway at 4:45 AM, and arrives at Ashmont / Busway at 4:59 AM. You can see the frequency of upcoming trips and the exact departure times by opening the Transit app.
See all departuresMBTA 21 bus On-Time Performance
51% of riders report that the MBTA 21 bus arrived on time on their previous trip. In the past 30 days, 29 riders reported on the on-time performance of the 21 bus. Compared to other MBTA lines, the 21 bus is ranked 131 out of 185 MBTA lines. These on-time performance stats are user reported and may differ from official MBTA metrics. See more details about on time, late or early departure reports for the 21 by opening the Transit app.
See all on-time perfomance details