TORONTO — Air Canada and the union representing its flight attendants have reached a tentative agreement to end a strike that began on Saturday morning. The strike involved approximately 10,000 flight attendants who walked off the job, significantly impacting airline operations.

The airline announced that it will gradually resume operations starting Tuesday. Negotiations took place overnight with the assistance of a federal mediator, leading to the tentative agreement. This agreement will be presented to the members of the Air Canada component of the Canadian Union of Public Employees (CUPE).

In a statement on its website, the union emphasized that members must “fully co-operate with resumption of operations.” Air Canada indicated that the first flights are scheduled for Tuesday evening. However, the airline cautioned that a full return to regular service may take seven to ten days due to aircraft and crew being out of position. Some flights may continue to be canceled until the schedule stabilizes.

Air Canada advised customers to only go to the airport if they have confirmed bookings for flights that are operating. For those with canceled flights, the airline will provide options including full refunds or credits for future travel. Additionally, Air Canada will attempt to rebook customers on other airlines when possible.

The federal government intervened in the strike on Saturday morning by invoking Section 107 of the Labour Code, which mandated binding arbitration between the airline and the union. Union officials defied this order, prompting the Canada Industrial Relations Board to declare the strike unlawful on Monday, even as the union indicated it would continue its actions.