Computer systems operational again at Montreal's Trudeau airport
Travellers should continue to check flight schedule before arriving at airport

Montreal's Trudeau airport said its computer systems were back in operation Tuesday night after technical issues caused long delays during the day.
In a statement, the airport said it's investigating the source of the network outage, thanking travelers "for their patience in this exceptional situation."
It suggests passengers continue to check the flight schedule before arriving at the airport to familiarize themselves with any changes.
The service provider for the airport, Bell Canada, had been conducting network upgrades with the airport teams but encountered "unexpected behaviour" in the final phase which took the connection offline, it said in a statement posted to X.
"We recognize that this has greatly inconvenienced people travelling through and working at [the airport] and are fully aware of the impact this has on those affected," said the company.
In total, 118 flights were delayed — 57 inbound and 61 outbound flights — according to a spokesperson for the airport.