Air Canada is the flag carrier and the largest airline of Canada by fleet size and passengers carried. Headquartered in the borough of Saint-Laurent in Montreal, the airline was founded in 1937 and operates a fleet of 335 aircraft serving 208 destinations worldwide through its major hubs at Montréal–Trudeau, Toronto–Pearson and Vancouver. It is a founding member of the Star Alliance. In 2025, the airline transported 45.3 million passengers.