Some Air Transat flights having already been cancelled Monday morning, as the airline begins to scale back operations ahead of a pilot strike that could begin as early as Wednesday at 3 a.m. ET. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News on TikTok: https://www.tiktok.com/@cbcnews Subscribe to CBC News on Snapchat: https://bit.ly/3leaWsr Download the CBC News app for iOS: