British Caledonian in the 1970s 31 March 1973 - with the BR airline designator it had inherited from BUA at the time of its formation. This resulted in exclusive use of the BR designator as a prefix for all BCal flight numbers. In 1973, BCal also inaugurated its fourth scheduled domestic trunk route between London Gatwick and Manchester. The new service was contracted to British Island Airways (BIA), BUIA's successor, which operated two daily return trips using its Handley Page Dart Herald turboprops. On 20 March 1974, BCal switched its Gatwick—Paris services to the then brand-new Charles de Gaulle Airport in the northern Paris suburb
George Bush Intercontinental Airport was the third terminal to be built at the airport, opening in 1981. It was designed by the Houston firm of Airport Architects, a joint venture of Golemon & Rolfe Architects and Pierce and Pierce Architects. Terminal C has 31 gates. The terminal includes the airport's interfaith chapel. The terminal underwent renovations from 2000 to 2005, designed by Gensler. On May 11, 2015, the airport broke ground on the airport's new Terminal C north concourse, which opened in March 2017. In March 2017 United also opened a Global Reception area for Global Services and Global First check-in which directly connects