A Delta Air Lines regional jet flipped upside down upon landing at Canada's Toronto Pearson Airport on Monday amid windy weather following a snowstorm, injuring 18 of the 80 people on board, officials said.

Three people on flight DL4819 from Minneapolis-St. Paul International Airport suffered critical injuries, among them a child, a Canadian air ambulance official said, with 15 others also immediately taken to hospitals.

Some of the injured have since been released, Delta said late on Monday.