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PRT 21 bus

Coraopolis

68% on time

PRT 21 bus Stop List and Next Departures

The PRT 21 - Coraopolis bus serves 65 bus stops in the Pittsburgh area departing from Stanwix St / Penn FS and ending at Bank St / Walnut. 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 can be found in the Transit app.

Outbound
Inbound
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Stops
Sat, Aug 1, 2026
PRT Coraopolis map

PRT 21 bus route map

The PRT 21 - Coraopolis bus route map is shown above. The route map shows you an overview of all the stops served by the PRT 21 bus to help you plan your trip on PRT. 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 map

PRT 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 PRT so that you can plan your trip around any active or future disruptions.

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PRT 21 bus Service Frequency

The next 21 bus leaves Stanwix St / Penn FS at 6:40 AM, and arrives at Bank St / Walnut at 7:17 AM. You can see the frequency of upcoming trips and the exact departure times by opening the Transit app.

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PRT 21 bus On-Time Performance

68% on time

68% of riders report that the PRT 21 bus arrived on time on their previous trip. In the past 30 days, 54 riders reported on the on-time performance of the 21 bus. Compared to other PRT lines, the 21 bus is ranked 71 out of 98 PRT lines. These on-time performance stats are user reported and may differ from official PRT metrics. See more details about on time, late or early departure reports for the 21 by opening the Transit app.

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PRT 21 bus FAQ

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