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.

Air Canada has canceled hundreds of flights — many of them international flights — as a potential strike by flight attendants looms

Ten thousand Air Canada flight attendants represented by the Canada Union of Public Employees are on the verge of a strike this weekend, threatening to