Air Canada has already begun canceling flights after hitting an impasse in contract negotiations with the flight attendants' union as a possible strike looms. Earlier this week, the union issued a notice of intention to strike,

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.

A strike by 10,000 Air Canada flight attendants led to hundreds of canceled flights on Saturday, including 24 at Los Angeles International Airport.