There are three airports for international air transport operations from/to Cambodia (Phnom Penh International Airport, Siem Reap International Airport, and Sihanoukville International Airport). In addition, a number of domestic airports, including Stung Treng Airport, Battambang Airport, Kampong Chhnang Airport and Koh Kong Airport can be used for domestic air transport operations. Several new airports have been under the construction, including the New Siem Reap-Angkor Airport, New Phnom Penh International Airport, Dara Sakor International Airport, Poipet Airport and new Mundulkiri Airport.