Transportation Safety Board investigators are at the scene of the crash in the remote municipality of Red Lake, not far from the Manitoba border and about 500 kilometres northwest of Thunder Bay.
The Bearskin Airlines plane went down just after 6:30 p.m. local time Sunday on approach to the Red Lake airport, and the agency announced Tuesday that the black box had been recovered.
Police say the twin-engine turboprop burst into flames when it hit the ground, and only two people survived — one of whom pulled the other to safety.
The two pilots — a 25-year-old from Mississauga, west of Toronto, and a 34-year-old from Winnipeg — were among those killed.
The survivors were identified as a 29-year-old man and a 50-year-old woman, both from Winnipeg.
The two were taken by ambulance to hospital where police said they were treated for non-life-threatening injuries.