The Detroit Free Press reports that 70-year-old Earl Zellen and his 40-year-old son Matt left July 21 and were reported missing on a lake in Nunavut after they failed to show up July 29 for a charter aircraft flight.
Police on Aug. 1 called off the search for the men.
Their boat and fishing gear were spotted, and the boat had run out of gas.
Two Canadian Air Force C-130 Hercules from CFB Trenton in Ontario helped search the Dubawnt Lake area last month.
Others searched the shore of the large remote lake, but found no trace of them.