Air Canada has suspended all its flights as a strike by cabin staff begins - a move the airline said will disrupt travel plans for around 130,000 passengers a day.
The union representing more than 10,000 Air Canada flight attendants confirmed the 72-hour industrial action early on Saturday morning.
The airline said it had suspended all flights, including those under its budget arm Air Canada Rouge, and advised affected customers not to travel to the airport unless flying with a different airline.
Air Canada's flight attendants are calling for higher salaries and to be paid for work when aircraft are on the ground.
The strike took effect at 00:58 ET (04:58 GMT) on Saturday, though Air Canada began scaling back its operations before then. The airline says around 500 flights will be affected per day.
