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
McCarran International Airport York City, opened on March 15, 1963. The airport was officially renamed McCarran International Airport in September 1968. Further expansion took place between 1970 and 1974 with the construction of the A and B gates. Prior to deregulation, the airport had four dominant carriers: United and TWA served both coasts nonstop from Las Vegas, while Western and Hughes Airwest provided service to destinations in the western US. After the airline industry was deregulated in 1978, the number of airlines serving McCarran doubled from seven to fourteen in only two years. New entrants by 1979 included American, Braniff and Continental. In