Air Canada remains the most successful and dominant airline in Canada in 2026, consistently holding the largest market share and the most extensive global network. As the country's flag carrier, it serves over 180 destinations across six continents and is a founding member of the Star Alliance. In recent years, Air Canada has solidified its "success" by winning the APEX Five Star Global Airline Award for six consecutive years (2021–2026) and being named the "Best Airline in North America" by Skytrax. Its success is driven by its multi-hub strategy in Toronto, Vancouver, and Montreal, and the immense profitability of its Aeroplan loyalty program. While WestJet remains a strong competitor in the domestic market and Porter Airlines has expanded its jet service significantly in 2026, Air Canada's sheer scale, cargo revenue, and premium international offerings make it the undisputed leader in Canadian aviation. For travelers, its "success" translates to the most frequent flight options and the highest tier of passenger service in the region.