Great Lakes Airlines was a regional airline in Canada. It was formed in 1958 in Sarnia, Ontario by John Blunt and by 1983 became Air Ontario Ltd. In June 1987 Air Ontario Ltd. merged with Austin Airways to form Air Ontario Inc. which in turn subsequently operated Air Canada Connector code sharing passenger flights on behalf of Air Canada with Convair 580 and de Havilland Canada DHC-8 Dash 8 series 100 and 300 turboprops. Air Ontario also operated Fokker F28 Fellowship jets at one point. Aircraft in service with Great Lakes during the 1970s, being Convair 440 propliners and Convair 580 turboprops, were older and subject to vibrations during take-off, resulting in passengers nicknaming the company "Great Shakes". Convair 580 turboprops operated by Air Ontario prompted the nickname "Scare Ontario". Destinations in 1979 Great Lakes Airlines was serving the following destinations in Ontario province in Canada with scheduled passenger flights operated with Convair aircraft in 1979: London, Ontario Ottawa, Ontario Peterborough, Ontario Sarnia, Ontario Toronto, Ontario See also List of defunct airlines of Canada References Defunct airlines of Canada Airlines established in 1958 1958 establishments in Ontario Airlines disestablished in 1987 1987 disestablishments in Ontario Companies based in Ontario Sarnia Canadian companies disestablished in 1987 Canadian companies established in 1958