Air Canada traces its origins to 1937 when it was founded as Trans-Canada Air Lines (TCA) by the Canadian federal government as a Crown corporation. The airline was established to create a unified national air transportation system that could connect communities across Canada's vast geography. TCA began passenger operations in 1938 with a flight between Vancouver and Seattle.
Throughout the 1940s and 1950s, TCA expanded its route network across Canada and began international service to the United States and Europe. In 1965, the airline was officially renamed Air Canada to reflect its growing international presence and modern identity as Canada's flag carrier.
A monumental shift in the company's structure occurred in 1988 when Air Canada was fully privatized. The Canadian government sold its remaining shares to the public, transforming the airline from a Crown corporation into a publicly traded commercial enterprise. This privatization enabled the airline to operate with greater commercial flexibility while navigating an increasingly deregulated global aviation market.
In 2000, Air Canada acquired its primary domestic rival, Canadian Airlines International, solidifying its position as the dominant player in the Canadian aviation market. The early 2000s, however, proved challenging for the global aviation industry following the September 11 attacks, and Air Canada filed for bankruptcy protection in 2003 under the Companies' Creditors Arrangement Act (CCAA). The company successfully emerged from restructuring in 2004 under the holding company ACE Aviation Holdings.
In 2012, the company completed a complex restructuring that spun off its various business units, leading to Air Canada returning to the public markets as an independent entity. A key strategic victory occurred in 2019 when Air Canada reacquired Aeroplan, its former loyalty program that had been spun off years earlier.
The COVID-19 pandemic caused severe financial disruption beginning in 2020, leading Air Canada to secure a substantial financial support package from the Canadian government. The company navigated the crisis and, by 2025, had returned to record revenue levels, reporting CAD 22.4 billion in annual operating revenue.