The airport shuttle serves several of the big hotels.
Taxis are also available.
The airport and the rest of greater Portland is served by the Metro Bus system. There is no Amtrak service to Maine. From May to October, Portland is a debarkation point for the Scotia Prince , a cruise ship that makes a 10-hour voyage to Yarmouth, Nova Scotia . Other cruise ships include Portland as a stopover. There are also ferry boats that run to the Calendar Islands, and specialized sights eeing, fishing and whale-watching excursions are also available.