Talks between Air Canada and the union representing its flight attendants are heading towards a work stoppage this weekend after the union officially gave its strike notice to the airline overnight.

But if you bought Air Canada tickets, you might be wondering — can you get a refund, and what should you do now?

The Canadian Union of Public Employees (CUPE) Air Canada says it has served the company with a 72-hour strike notice , while advising members the airline has issued its own plan to lock out employees early Saturday morning.

The carrier said it will begin cancelling flights as early as Thursday because “sudden or unmanaged work stoppages produce a significantly worse disruption to travel than a planned suspension of flying.”

“A controlled wind down allows Air Canada to advise

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