Cambodia possesses twenty-six airfields, of which only thirteen were usable in the mid-1980s. Eight airfields had permanent-surface runways. Phnom Penh International Airport near Phnom Penh is the largest airport; it also serves as the main base for the renascent Cambodian Air Force (see Kampuchean, or Khmer, People's Revolutionary Armed Forces, ch. 5).

Cambodia's second largest airport is Siem Reap International Airport in the major tourist city of Siem Reap. Tourist traffic into Angkor International Airport saw passenger numbers overtake those of Phnom Penh in 2006, the airport now being the country's busiest.

Cambodia also opened a new Soviet-built airfield at Ream, Sihanoukville International Airport in late 1983, which never saw commercial air traffic until now. There is an additional secondary airport in Battambang.