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

Air Canada has warned its customers that their travel over the next few days could be disrupted because of a planned strike by its unionized flight attendants.The planned action comes after contract negotiations between the union representing Air Canada's roughly 10,