Air Canada flight attendants at YYC, represented by the Canadian Union of Public Employees (CUPE), held a simultaneous action at airports in Montreal, Toronto, Vancouver, and Calgary, to raise awareness among Canadians about ongoing issues related to their working conditions in Calgary on August 11, 2025. Photo by Darren Makowichuk/Postmedia

Air Canada will start suspending flights on Thursday after its unionized flight attendants served a notice to strike early Wednesday morning.

The airline on Wednesday said it will begin a phased winding down of most of its operations over the next three days, with the first flights to be cancelled on Thursday, more on Friday and a complete cessation of flying by Air Canada and Air Canada Rouge on Saturday.

Just before 1 a.m. on Wednesday, the Ca

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