Air Canada cancelled hundreds of flights Saturday as it began shutting down operations in response to a strike by flight attendants -- triggering summer travel chaos for its 130,000 daily passengers.

Air Canada began canceling flights Thursday ahead of a possible strike by its flight attendants that could impact hundreds of thousands of travelers. A complete shutdown of the country's largest airline threatens to impact about 130,000 people a day.

Over 10,000 Air Canada flight attendants plan to strike on Saturday over stalled contract talks, threatening major travel disruptions across Canada.