Air Canada () is the flag carrier and largest airline of Canada. The airline, founded in 1936, provides scheduled and charter air transport for passengers and cargo to 178 destinations worldwide. It is the world's ninth-largest passenger airline by number of destinations, and the airline is a founding member of Star Alliance, an alliance formed in 1997 which now has 28 member airlines. Air Canada's corporate headquarters are located in Montreal, Quebec, while its largest hub is Toronto Pearson International Airport, located in Mississauga, Ontario. Air Canada had passenger revenues of CA$10.2 billion in 2011. 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.