Air Canada is the flag carrier and largest airline of Canada by fleet size and passengers carried. The airline, founded in 1937, provides scheduled and charter air transport for passengers and cargo to 182 destinations worldwide. It is the world's eighth-largest passenger airline by fleet size, and is a founding member of the Star Alliance. Air Canada's corporate headquarters are in Montreal, Quebec, while its largest hub is at Toronto Pearson International Airport. Air Canada had passenger revenues of CA$13.8 billion in 2015. The airline's regional service is Air Canada Express.

Canada's national airline originated from the Canadian federal government's 1936 creation of Trans-Canada Airlines (TCA), which began operating their first transcontinental flight routes in 1938. In 1965, TCA was renamed Air Canada following government approval. After the deregulation of the Canadian airline market in the 1980s, the airline was privatized in 1988. On 4 January 2000, Air Canada acquired their largest rival, Canadian Airlines. In 2003, the airline filed for bankruptcy protection and in the following year emerged and reorganized under the holding company ACE Aviation Holdings Inc. In 2007, 34 million people flew with Air Canada as the airline celebrated their 70th anniversary.

Air Canada has a fleet of Airbus A330, Boeing 767, Boeing 777, and Boeing 787 wide-body jetliners on long-haul routes and uses the Airbus A320 family aircraft, including the A319, A320, and A321 variations, and Embraer E190 family aircraft on short-haul routes. The carrier's operating divisions include Air Canada Cargo, Air Canada Express and Air Canada Rouge. Their subsidiary, Air Canada Vacations, provides vacation packages to over 90 destinations. Together with their regional partners, the airline operates on average more than 1,530 scheduled flights daily.

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