Montreal passengers wait in frustration for long-delayed Sunwing flights

Sunwing flights delayed or cancelled Airline says systems provider is having a network-wide system issue. Guest, Mark Williams

Lines remain at Montreal's Trudeau airport full of travellers wanting to get on Sunwing flights.

It seems the network system failure that's been keeping passengers on the ground could be the result of a cyber attack.

Watch the video above for the full report from CTV News Montreal's Billy Shields.