A complete shutdown will impact about 130,000 people a day, and some 25,000 Canadians a day may be stranded abroad.

More than 10,000 Air Canada flight attendants who went on strike early Saturday will be ordered to return to work by the Canada Industrial Relations Board (CIRB), according to a Saturday announcement by Canadian Jobs Minister Patty Hajdu.

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.