There is a car ferry that runs from the town of DeTour to Drummond Island. The ferry operates year-round every day of the week. The ride is 5-10 minutes long. The schedule and round trip rates can be found here here
There is also an airport on the island, call letters KDRM. For more information contact James Bailey (906) 493-5411
There are several marinas and boat docks if you travel by your own boat. We offer docking here at the Resort. Call (906) 493-1000 for details