Air Canada says its airport systems, check-in and call centres "are beginning to come back online" after a technical problem. Several hours later, the airline tweeted that the systems were coming back online. Even after the statement from Air Canada reporting that systems were starting to come back, many passengers complained on Twitter of ongoing issues with the check-in system and the call centre. Air Canada urged travellers to check the status of their flight before heading to the airport, and apologized for the inconvenience. At the peak of the system-wide outage, the Toronto airport's website showed delays of more than two dozen Air Canada flights.

Source: CBC News May 29, 2019 02:26 UTC