Air Canada passengers in Saskatchewan could soon see cancellations as a contract dispute between the airline and the union representing more than 10,000 flight attendants remains at an impasse. 

The Canadian Union of Public Employees (CUPE), which represents flight attendants at Air Canada and Air Canada Rouge, issued a 72-hour strike notice on Wednesday morning. 

In response, the airline said it plans to start cancelling flights on Thursday, with more expected on Friday. Followed by a full suspe…