2010s
On 14 December 2011, the airline started up a second domestic route within Cambodia, operating a thrice weekly Siem Reap – Sihanoukville service on board an ATR 72 turboprop.[10]
On 30 November 2012, the airline commenced flights to Thailand, between Siem Reap – Bangkok Suvarnabhumi Airport daily, breaking the monopoly of Thai carrier, Bangkok Airways, on this route. The route is operated by CAA's ATR 72 turboprop. On 31 March 2013, Cambodia Angkor Air increased the frequency of Siem Reap to Bangkok, to include a second daily flight. In July later that year, it was increased again to three daily flights.[11][12]
On 7 January 2013, the airline revealed the launch of Hanoi services from both its hubs at Phnom Penh and Siem Reap, with one daily flight each on the Airbus A321. This was the second destination in Vietnam to be served by Air Cambodia.[11][13] On 1 February 2013, the airline launched its second route to Bangkok Suvarnabhumi Airport from Phnom Penh. Flights are operated daily with an Airbus A321.[14] On 6 March 2013, the airline forecasted a loss for the first time, due to the rapid expansion and increased exposure to competition.[15] On 6 March 2013, the airline adjusted the Sihanoukville route, where the existing 3 weekly Siem Reap – Sihanoukville return service was rerouted via Phnom Penh, with the flight operating as Siem Reap – Sihanoukville – Phnom Penh – Siem Reap.[16] On 14 July 2013, the airline commenced charter operations on the Siem Reap – Xiamen route.[17] On 26 September 2013, the airline commenced its inaugural flights to China breaking the monopoly of China Southern Airlines who had operated a daily frequency, which switched to a frequency of 11 flights.[18] The route is Guangzhou- Siem Reap, operating daily using an Airbus A320. On 26 December 2013, the airline commences its seasonal Siem Reap – Hangzhou route. Also on 26 December 2013, the airline commenced new scheduled services to Shanghai–Pudong from both its hubs at Siem Reap and Phnom Penh each with four flights per week with their Airbus A321 aircraft.[19]
On 18 and 23 January 2014, Air Cambodia started its charter flight to Wenzhou and Zhengzhou. On 1 February 2014, charter flights from Sieam Reap to Fuzhou began.
On 16 January 2015, the airline launched its charter flight to Singapore Changi International Airport with an Airbus A321. On 25 October 2015, the national carrier launched new intra-Indo-China routes. There are connecting flights between Vietnam, Cambodia, and Laos. The airline plans to operate the Ho Chi Minh City – Phnom Penh – Vientiane – Hanoi route 3 times a week, using Airbus A321 aircraft. They will be using Vietnam Airline's code, VN. Vietnam Airlines operate on this route daily. Air Cambodia's K6 code will also appear on Vietnam Airlines' flight on this route. On 30 October 2015, Cambodia Angkor Air resumed its Siem Reap – Shanghai route. On 16 December 2015, the airline launched a new route, Siem Reap – Beijing, with their new A320. On 25 December 2015, Air Cambodia started its charter flight to Seoul-Incheon.
On 30 December 2016, the airline resumed its Siem Reap-Hanoi flight while their new A320 entered service in the CAAC.
