Plane spotters watch an Air Transat jet take off from Trudeau Airport in Montreal on September 13, 2023. Photo by John Mahoney / MONTREAL GAZETTE

Transat AT Inc. will start cancelling flights on Monday and Tuesday after the union representing the airline’s 700 pilots issued a three-day strike notice.

The Montreal-based vacation operator said in a statement Sunday that a pilot strike could officially begin on Wednesday, compelling it to begin a gradual suspension of operations to prevent its passengers, crews and aircraft from “being stranded abroad if the strike occurs.”

“Our priority is to minimize disruption for customers,” the company said, noting that flights will be gradually suspended between Monday and Tuesday. Transat set up an information page for passengers on its website a

See Full Page