Aviation analytics firm Cirium said that as of Monday afternoon, August 18, Air Canada had called off at least 1,219 domestic flights and 1,339 international flights since last Thursday, when the carrier began gradually suspending its operations ahead of the strike and lockout.

Union leaders for Air Canada’s AC -2.98% flight attendants called off a strike that prompted flight cancellations and affected 500,000 customers.

"The Air Canada strike helps negotiations everywhere. It defined the problem of ridiculous expectations for flight attendants to work without pay," said Sara Nelson, international president of the As...