[2] It is located in the Pou Senchey District,[3] 10 kilometres (5.4 NM) west of Phnom Penh, the nation's capital.

[6][7] After the last land and water based routes fell into the hands of the Khmer Rouge in April 1975, the airport became the sole path for supplies for Phnom Penh.

[8] After the collapse of the Khmer Republic in 1975, Pochentong was almost completely closed to international travel, with the exception of some flights directly from Beijing.

[17] The project saw the extension of the parking lots and terminals, more check-in and immigration counters, and new baggage handling systems.

Additionally, the commercial areas were enlarged to allow for more retail shops, new restaurants and food and beverage outlets, and mezzanine lounges to cater to first class and business travelers.

[20] In 2020, SCA lost the concession for Phnom Penh (along with Siem Reap) after plans were announced to build two new airports in those locations.

[21] In January 2018, the Cambodian government approved a proposal to build a new airport to serve Phnom Penh that will cost an estimated US$1.5 billion.

[22] The new international airport will replace the existing Phnom Penh International Airport, with initial plans having the facilities being constructed on partially reclaimed land adjacent to Boueng Cheung Loung, a large lake in Kandal Province about 30 kilometres south of Phnom Penh.