Kahului OGG Airport has two passenger terminals serving overseas and inter-island flights. Terminals are called: Commuter Terminal and Overseas or so-called Main Terminal. Both terminals have only one sharing consolidated security checkpoints in the center that connects both terminals. Around 16 jetways are accessible for deplaning or enplaning passengers. There are 6 Gate Hold areas, named A-F. Those Gates with numbers are used as emergency exits (equipped with stairs to lead to the ramp below), and Gates with odd numbers have jetway systems.
The main passenger terminal consists of two areas: North and South. The North Area houses Gates: 17-39 along with nine aircraft parking positions. Gates 9, 11, 17, 13, 15, 19, and 21 are Inter-island Gates. Whereas Gates 1, 5, 7, 23, 27, 29, 33, 35, and 39 are Overseas Gates. Concerning the South Area, it houses Gates: 1-16 with seven aircraft parking positions.
The Commuter Terminal currently serves inter-island flights, such as Mokulele and Makani Kai airlines at Boarding Gates 1 and 2.
The Overseas / Main Terminal has two levels. The ground level houses the Arrivals with baggage claim carousels 1 to 5 and airline offices. This level holds the center houses a Promenade with Garden and has access to security checkpoints through to the gate area on the second level. On the opposite side, there is the ticketing lobby with shared-use check-in stations for all Airlines, airport offices, conference rooms, security offices, and the Visitor Information Area. There you can find Lost and Found information desk, the I.D. Office next to the Promenade, the Main TSA checkpoint (next to the Garden) that allows access for the boarding gate areas on the upper level.
The Upper Level hosts the Central building with restaurant and cocktail lounge, newsstand, and stairs/escalators to the baggage claim area. Passengers who wish to get the access with the Airline VIP Lounges, OGG airport provides six separate lobbies with its gates: West Gates: 15, 11, 13, 9, 5, 1, 7; East Gates: 17, 21, 19, 27, 23, 29, 35, 33, 39.