The airport posted on X that the incident involved a plane arriving at the international airport from Minneapolis.
A plane has crashed at Toronto Pearson International Airport – with local media reporting it flipped on landing.
The airport had posted images on X after 53cm of snow fell over the past week.
Images from the airport show the Delta Airlines plane upside down on the tarmac.
One person is critically injured while the others have suffered mild to moderate injuries, paramedics have said.