By bus
Plymouth and Brockton Street Railway Co., 8 Industrial Park Rd., +1 508-746-0378, (http://www.p-b.com/). Connects Boston and the southeastern Massachusetts seaboard including Cape Cod. There is an express bus connecting to Logan airport in Boston.
By plane
Plymouth Municipal Airport ICAO: KPYM, 246 South Meadow Road, +1 508-746-8003, (http://www.fltplan.com/Ai...). Small, regional airport. Most travelers would fly into Boston's Logan International AirportBOS or Warwick, Rhode Island's T.F. Greene AirportPVD.
By train
Take the Plymouth/Kingston line (http://www.mbta.com/sched...) from Boston's South Station on the MBTA (http://www.mbta.com/) Commuter Rail, until terminal at Plymouth station. Trains alternate on this line, ending either at Kingston or Plymouth. The Plymouth terminal is at Cordage Park, about a mile away from the main tourist area. From there you can take a GATRA bus (http://www.gatra.org/pal.html) or call a taxi.
By car
Plymouth is not quite an hour south of Boston via Interstate Rt. 93 and Rt. 3 exit 6A. It is also possible to exit off Rt. 3 anywhere and head east to Rt. 3a south for a more scenic and slower trip.It is also about an hour and a quarter drive from Providence, RI which makes that a reasonable regional airport access to Southeastern Massachusetts.
Parking -- Plymouth has a new system at town lots. You buy a ticket from machines at the yellow pay stations and place it on your dashboard. Try to have dollar bills and quarters available if you plan on parking at Town Wharf or elsewhere downtown. Be sure to add time to the extent you want before putting your money in the machine. Change is not always given by the machines.