Air Canada has suspended plans to restart operations after the union representing 10,000 flight attendants decided to defy a return-to-work order.

The decision by the union representing the 10,000 workers means that travel chaos will continue for at least a second day. Air Canada said it had suspended its reopening plan until Monday evening.

One of the world's largest airlines is set to experience a significant disruption in service. Air Canada's flight attendants are currently on strike, and their decision to step away means that thousands of flights could be canceled.