The world's largest global airline alliances in which United is a founding member was founded when?
United Continental Holdings United Continental Holdings, Inc. (formerly UAL Corporation) is a publicly traded airline holding company headquartered in the Willis Tower in Chicago. UCH owns and operates United Airlines, Inc. The company is the successor of UAL Corporation, which agreed to change its name to United Continental Holdings in May 2010, when a merger agreement was reached between United and Continental Airlines. Its stock trades under the UAL symbol. To effect the merger, Continental shareholders received 1.05 shares of UAL stock for each Continental share, effectively meaning Continental was acquired by UAL Corporation; at the time of closing, it was estimated that United shareholders owned 55% of the merged entity and Continental shareholders owned 45%. The company or its subsidiary airlines also have several other subsidiaries. Once completely combined, United became the world's largest airline, as measured by revenue passenger miles. United is a founding member of the Star Alliance.
Cubana de Aviación Cubana de Aviación S.A., commonly known as Cubana, is a national airline based in Cuba, as well as the country's largest airline. It was founded in  1929 (1929-) , becoming one of the earliest airlines to emerge in Latin America. It has its corporate headquarters in Havana, and its main base is located at José Martí International Airport. Originally a subsidiary of Pan American World Airways and later a private company owned by Cuban investors, Cubana has been wholly owned by the Cuban government since May 1959 and celebrated its 80th anniversary in 2009.