Travelers look out over grounded Air Canada planes as flight attendants picket at Pearson International Airport in Toronto, Monday. Air Canada suspends restart plans after union defies return to work order Air Canada will resume flights Monday evening, claiming the union illegally directed flight attendants to defy a return-to-work order. Government forces Air Canada flight attendants back to work, into arbitration Canada’s government forced Air Canada and its striking flight attendants back to work and into arbitration Saturday after a work stoppage stranded more than 100,000 travelers around the world. The Canada Industrial Relations Board had declared the strike illegal Monday and ordered the flight attendants back on the job. Passengers whose flights are impacted will be eligible to request a full refund on the airline’s website or mobile app, according to Air Canada.