Vietjet Aviation Joint Stock Company, operating as VietJet Air or Vietjet, is a Vietnamese low-cost airline based in Hanoi. It was the first privately owned airline to be established in Vietnam, being granted its initial approval to operate by the Vietnamese Minister of Finance in November 2007. As of its launch in December 2011, it became the second private airline to offer domestic service in Vietnam, as well as the fifth airline overall to offer civil domestic flights. VietJet Air is owned by Sovico Holdings, HDBank, other organisational investors, and individual stakeholders.

Mekong Aviation Joint Stock Company, doing business as Air Mekong, was an airline from Vietnam which operated scheduled passenger flights from its base at Phu Quoc Airport and secondary hubs at Noi Bai International Airport and Tan Son Nhat International Airport. Its headquarters were located in Phú Quốc, Kiên Giang Province. It was established in 2009 and flight operations were launched on 9 October 2010. This is the third privately owned airline of Vietnam, after Indochina Airlines, and VietJet Air. Air Mekong leased four Bombardier CRJ 900 aircraft from SkyWest Airlines, each equipped with 90 seats in both business and economy classes. In 2011, Air Mekong operated 10,750 flights and carried about 710 thousand passengers.