About 80 flights scheduled to arrive at Pearson had been cancelled as of Saturday evening.
Weather and reduced staffing of air traffic controllers at Toronto Pearson International Airport has caused delays and cancellations.
NAV Canada, which owns and operates Canada’s civil air navigation service, says weather has affected flights to Montreal and Newark, N.J., from Toronto, but did not explain the reason for the reduced staffing levels. It says that it is working to get aircraft “on their way as quickly as possible.”
Saturday afternoon, the airport was warning passengers through Twitter, that lightning could affect their flight schedules.