Both Pearson and the island airport are experiencing delays because of the thick fog this morning.At Pearson International, about 20 flights are running 10 to 15 minutes late, said spokesperson Scott Armstrong At the Toronto City Centre Airport, the first two morning flights left on schedule, but as the weather deteriorated several flights had to be cancelled, said spokesperson Brad Cicero“For the next handful of flights we’re going to be operating in and out of Pearson airport,” he said.

Travelers will check in as usual to the island airport, and after clearing security they’ll be bused to Pearson directly to the plane.“As always we’d like to remind our customers to call in advance to see if their flight is running on time,” Armstrong said.