Good news for budget-conscious travelers planning on taking public transit into town from Boston Logan International Airport.

The airport has decided to extend through September a program that provides free Silver Line express bus service from the airport to Boston’s South Station, which is the connecting point for the MBTA’s Red Line rapid transit system.

As I reported in June (How to get a free public transit ride from the airport), the airport originally planned to test the free-ride program for 90 days to see if it could heighten awareness of public transit options to and from the airport, reduce strain on maxed-out parking structures and improve the flow of traffic out in front of the terminals.

Evidently the program is going well.

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