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SantiagoRed

Red 421 bus

Maipu - San Carlos de Apoquindo

Red 421 bus Stop List and Next Departures

The Red 421 - Maipu - San Carlos de Apoquindo bus serves 100 bus stops in the Santiago area departing from Parada / Terminal las Acacias and ending at Parada / Scuola Italiana. Scroll down to see upcoming 421 bus times at each stop and the next scheduled 421 bus times will be displayed. The full 421 bus schedule as well as real-time departures can be found in the Transit app.

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Stops
Thu, May 21, 2026
Red Maipu - San Carlos de Apoquindo map

Red 421 bus route map

The Red 421 - Maipu - San Carlos de Apoquindo bus route map is shown above. The route map shows you an overview of all the stops served by the Red 421 bus to help you plan your trip on Red. 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 421 bus is approaching your stop.

See the detailed route map

Red 421 bus Service Alerts

Open the Transit app to see more information about any active disruptions that may impact the 421 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 Red so that you can plan your trip around any active or future disruptions.

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Red 421 bus Service Frequency

The next 421 bus leaves Parada / Terminal las Acacias at 12:13 PM, and arrives at Parada / Scuola Italiana at 2:18 PM. You can see the frequency of upcoming trips and the exact departure times by opening the Transit app.

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Red 421 bus On-Time Performance

Want to know whether the Red 421 bus arrives on time? Open the Transit app and view user generated on-time performance reports for the 421 bus. You can also contribute your own reports on whether your trip arrived on time, late or early. As these on-time performance stats are user reported, they may differ from official Red metrics.

See all on-time performance details

Red 421 bus FAQ

  • What time does the next Red 421 bus depart from Parada / Terminal las Acacias?

    The next 421 bus leaves Parada / Terminal las Acacias at 12:13 PM, and arrives at Parada / Scuola Italiana at 2:18 PM. The total trip time for the next Red 421 bus is 125 min.

  • Is the Red 421 bus running on time, early or late?

    You can track your bus on a map, monitor real-time updates, and see adjustments to the Red 421 schedule by downloading the Transit app.

  • When does the next Red 421 bus arrive?

    You can see the next Red 421 bus times in the app as well as future departure times for the 421 bus.

  • How many bus stops are there for the Red 421 bus?

    There are 100 stops on the Red 421 bus.

  • Is the Red 421 bus usually crowded?

    You can find real-time information on Red 421 bus crowding levels in the Transit app (available in select cities or on select trips). You can also see predictions on how crowded the bus will be when it gets to your bus stop.

  • Is the Red 421 bus currently running?

    Find out the current status for the Red 421 bus in the Transit app.

  • What is the closest Red 421 bus stop to me?

    Open the Transit app to see your location on a map and find the closest 421 bus stop to where you are.

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