The main terminal structure at Juneau International Airport was built in the year 1948 and has experienced various renovation and improvement projects since then. It covers 80,000 square feet and features food and drink stores, free internet access, lost and found center, baggage and freezer storage, and a smoking zone.
The first level of the main terminal houses the main baggage claim, arrivals, ticketing area, visitors' bureau, and car rental.
The second level houses TSA screening, lobby, passenger greeting area, restaurants, Glacier Lounge, and a departure lounge with gates one to eight.
The main terminal of Juneau International Airport experienced an extensive expansion, which split into three phases.
Phase I saw the installation of a new roof as well as new windows on the south side of the terminal. Phase II included the interior renewals on both floors of the main terminal as well as extensions at the eastern part of the terminal.
The final phase featured the establishment of a new geothermal station in May 2011, costing $15,000. It utilizes 16-mile underground piping that holds water mixed with ethanol. The heat created by the difference between ground and air temperatures is transferred into the building.
Other improvements done in the terminal are an escalator, community room, touch-screen hotel directory, advertising plasma screen in the baggage claim area, and a glass panel with a beautiful view of mountain and glacier. The baggage belt's size was increased during the expansion.