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,

STORY: Air Canada expects to cancel the majority of its estimated 700 daily flights on Friday ahead of a planned Saturday strike by unionized flight attendants.:: FileThe country’s largest carrier operates over 250 aircraft on flights to more than 65 countries.

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.