Alaska Airlines has flights to/from Juneau (45 minutes) and Ketchikan (one hour). Its airport is on Japonski Island, 1.8 miles west, or a 20-minute walk, of downtown. The Bus' green line runs to the island but stops short of the airport; a taxi is the easiest way to reach downtown.
Harris Aircraft Services Floatplane air-taxi service to small communities, USFS cabins as well as larger SE towns such as Juneau.
Sitka Airport On Japonski Island