ECAir was created with the support of the Congolese Government, to serve as a locomotive for the modernization of the aviation sector in the region. Crews and technical support for ECAir are provided by Geneva-based VIP business carrier PrivatAir. and thus ECAir avoids being included in the list of air carriers banned in the European Union, as are all airlines with maintenance services executed in the Republic of the Congo.
Operations commenced on 24 September 2011, the company having taken delivery of its first aircraft, a Boeing 737-300. It took delivery of a second Boeing 737-300 in February 2012.
On 24 August 2012 ECAir launched its first International route, Brazzaville – Paris CDG, offering 3 weekly service on board a PrivatAir Boeing 757 aircraft.
On 22 July 2013, French singer PASSI released his new clip "Attachez vos ceintures" (translated from French: "Fasten your seat belt") partially recorded in ECAir 757 registred HB-JJD.
ECAir, since its creation, is 70% owned by the Government of the Republic of the Congo, 15% by seaport of Pointe-Noire and 15% by Heli-Avia company. To launch the airline, the Government engaged Lufthansa Consulting, who managed the complete start-up process preparation, and developed a five year business plan, including the future network and fleet structure for the new airline. From the outset, all cockpit crews and some cabin crews and technical support for ECAir have been provided by Geneva-based carrier PrivatAir. After Lufthansa Consulting was phased out, company CoeM was created by Director Development Marco Villa, Johan Maertens and Laurent Petit, to provide consulting services to ECAir (16 consultants). CoeM is also active is others services fields in Congo, like urbanism, buildings, and Hostels. From April 2013 to August 2014, Dr Maria-Angelika Hanne was Commercial Director of ECAir, on behalf of CoeM.