Air Canada is the flag carrier, the largest airline of Canada by fleet size and passengers carried, and member and/or founder of the Star Alliance. Air Canada maintains its headquarters in the borough of Saint-Laurent, Montreal, Quebec. The airline, founded in 1937, provides scheduled and charter air transport for passengers and cargo to 222 destinations worldwide. It is a founding member of the Star Alliance. Air Canada's major hubs are at Montréal–Trudeau International Airport (YUL), Toronto Pearson International Airport (YYZ), Calgary International Airport (YYC), and Vancouver International Airport (YVR). The airline's regional service is Air Canada Express.