An integral part of island communities, the Mailboat is a true working boat carrying passengers, mail and freight to the islands of Casco Bay - Little Diamond, Great Diamond, Long, Cliff and Chebeague.  As the longest operating service of its kind, this trip is a wonderful way to see the sights of the bay on the Mailboat Cruise.  

Duration: 2.5-3.5 hrs. (times vary based upon route and cargo volume)

Runs: Daily

Casco Bay Lines operates passenger, vehicle and freight service year-round. Casco Bay Lines ensures that passengers have safe, dependable and reliable transportation, and is considered the “lifeline” for the residents of the islands. Casco Bay Lines’ ferries transport nearly one million passengers, 30,000 vehicles and 5,300 tons of freight annually. Casco Bay Lines also delivers the U.S. mail and transports island students to and from Portland.