The two new cases are both from the Winnipeg Health Region and are a woman in her twenties and a man in his thirties.
Health officials said passengers may have been exposed to COVID-19 on two Air Canada flights in July.
The first flight was the AC 873 from Frankfurt, Germany, to Toronto on July 26. The second flight was also July 26 and was AC 265 from Toronto to Winnipeg.
The affected lines are not known for the first flight; while the rows affected on the second flight are rows 22 to 28.
People in the affected rows are advised to self-isolate for 14 days after the flight and watch for symptoms. People on the flight, but not in the affected rows, are still advised to self-monitor for symptoms.
There have now been 444 cases of COVID-19 since early March.
There are nine people in the hospital, five of whom are in intensive care. There are currently 94 active cases and 342 people have recovered from the virus.
The death toll remains at eight.
On Tuesday, 990 tests were carried out, bringing the total to 94,984 since the beginning of February.