Air Canada said it suspended plans to restart operations on Sunday after the union representing 10,000 flight attendants said it will defy a return to work order.

Air passengers are still scrambling to rebook their flights home as a labour dispute between Air Canada and its flight attendants continues to ground planes around the world.

CUPE in a Saturday afternoon statement described the move as “cav (ing) to corporate pressure,” accusing the Mark Carney government of dealing “incalculable damage to the Charter and workers’ rights....