The best time to visit the park is May through October, but the park is open year round. Visitors may access the area at any time but overnight camping is not permitted. The Aleutian World War II National Historic area can be accessed in the summer via an unimproved gravel switchback road from the city of Unalaska. In the winter you'll need snowshoes or skis.
The park is located on Amaknak Island in the Aleutian Island Chain, 800 miles west of Anchorage, the nearest large urban center. It can be reached by air through commercial and charter flights from Anchorage.
The Alaska Marine Highway is a ferry service that is operated by the state. To travel to Unalaska, one can catch the ferry in Homer or Kodiak Island. Commercial air flights are available from Anchorage to Kodiak Island. People wanting to go to Unalaska from the Alaskan mainland typically access the ferry system from the Homer ferry terminal. Homer is about 220 miles south of Anchorage, and can be reached by vehicle or by air. Visitors wishing to travel to Homer via vehicle will need to use the Seward and Sterling Highways. To travel by air, please visit Era, Alaska Airlines or Grant Aviation.