The airports are ranked by passenger traffic and aircraft movements.
Given its advantageous position on the west coast of Canada, Vancouver International has long served as Canada's hub for flights bound for Asia and Oceania.
As one of the closest major North American cities to Europe, Montréal-Trudeau has also seen substantial passenger growth in recent years, now serving over 22 million passengers annually, with nearly 16 million on international flights, making it one of North America's busiest international hubs, second only to Toronto-Pearson in Canada.
Calgary International is the busiest airport in Alberta and the fourth-busiest in Canada by passenger traffic, as the region's petroleum and tourism industries (and its proximity to Banff National Park) have helped foster growth, and offers nonstop flights to an array of destinations in North and Central America, Europe, and Asia.
Air traffic decreased greatly in this year due to the COVID-19 pandemic.