Help me figue out how to get from Boston to Green Airport Providence next Saturday morning, please!

I've taken a taxi from the train station in Providence to PVD twice, both times in the middle of a weekday. The ride is less than $20 with tip, if I remember correctly, and pretty short. Have a safe trip!

thanks for the advice, people! the amtrak ticket was super-cheap, so i guess i'll give bonanza a ring, and otherwise take a cab.