"Today's computer issues have had a wide impact on our customers and we apologize for any inconvenience". "We appreciate our customers' patience and we have arranged additional staffing to get our customers on their way as soon as possible".
Earlier, Air Canada said in a statement its technology teams were working to identify and fix the issue, and it was also implementing temporary measures to maintain a limited operation.
Officials say they have implemented temporary measures to "maintain a limited operation" while the airline's IT department works to identify the issue and restore service. Customers are advised to check the status of their flight and check-in online before going to the airport.
Air Canada said it's experiencing "an interruption" at its customer contact centres and on its website.
The Air Canada AC8060 departure at 10 a.m. was cancelled and the airport is reporting that others may be facing delays.
"We're expecting some flight delays but we're getting everyone on their way", the carrier said in a statement.