TORONTO (AP) — More than 300 Air Canada flights, many of them international trips, have been canceled as the clock ticked closer Friday to a possible strike by flight attendants, leaving travelers stranded around the world and scrambling during the peak summer travel season.

Canada's Federal Jobs Minister Patty Hajdu said now is not the time to take risks with the economy, noting the unprecedented tariffs the US has imposed on Canada.

The Canadian government wants an arbitrator to impose a deal to end Air Canada strike that's stranded airline passengers.