A complete shutdown will affect approximately 130,000 people daily, and around 25,000 Canadians will be stranded abroad each day. Air Canada operates around 700 flights per day.

A bitter contract fight between Canada’s largest airline and the union representing its flight attendants escalated Friday.

About 200 Air Canada flights are to the U.S., according to The Wall Street Journal. The strike comes as Canadians increasingly avoid the United States because of diplomatic tensions between the neighbors. With more Canadians taking vacations at home, Air Canada has seen extra pressure on domestic routes.