The prospect of a system-wide work stoppage by Air Canada's unionized flight attendants loomed large on Friday with a strike deadline just hours away, despite a government plea for both sides to ... Air Canada flight attendants are holding a strike vote on whether to give the union a mandate for job action, with Aug. 16 the earliest date a strike notice could be given. The flight attendants’ collective agreement with Air Canada expired on March 31, 2025. Despite months of negotiations and a 60-day conciliation process with federal mediators, the two sides failed to secure a new contract. Air Canada reports nearly all of its routes are back up and running following strike action by unionized flight attendants, which ended Tuesday.