Starting Wednesday, people traveling from Logan Airport can get a free ride to South Station via the Silver Line bus.

Logan Airport, Massport, MassDOT, and the MBTA today announced a three-month “On Us” pilot program that will run until September 3, with the hope of reducing road traffic.

“Thanks to the Patrick-Murray Administration’s historic Transportation Reform, MassDOT, Massport and the MBTA are working together to test an ambitious plan to reduce the growing number of passenger vehicles on-airport, and encourage the use of public transportation and other HOV alternatives,” said MassDOT Secretary Richard A. Davey, who chairs the Massport Board.

Massport spokesman Matthew Brelis said today that he anticipates the program to cost the agency about $100,000 each month.


By reducing the need for parking by an estimated 1,500 cars per day, Brelis said Massport will hopefully be able to offset the lost revenue by cutting staff at the airport parking lots.

Logan Airport, 15 minutes from the intersection of Route 128 and I-90 and five minutes from downtown Boston, offers nonstop service to 72 domestic and 31 international destinations, and in 2011 handled 28.9 million passengers, according to Massport.