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.

The Canadian carrier said it expects to call off 500 flights by the end of Friday. Air Canada said it was suspending its schedule and trying to get passengers booked with other airlines to limit disruptions.

Canadian Labor Minister Patty Hajdu said on Friday that she met jointly with Air Canada and the Canadian Union of Public Employees (CUPE), urging both sides to work harder and remain at the negotiating table to reach a deal and avert a potential strike.

Air Canada wants to reinforce the gender wage gap by forcing Air Canada flight attendants – 70% of whom identify as women – to accept a wage offer less than one-third what Air Canada offered its pilots less than a year ago.