Southern Frontier Airlines

{{Infobox airline

| airline = Southern Frontier Airlines

| image =

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| IATA = -

| ICAO = SFS

| callsign = SOUTHERN FRONTIER

| founded = {{Start date|1978||}}

| commenced =

| ceased ={{End date|1988||}}

| bases = Calgary International Airport

| fleet_size =

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}}

Southern Frontier Airlines was a commuter airline based in Canada which was acquired by Time Air on April 25, 1988.Calgary Herald, April 23, 1988

In 1985, Southern Frontier was operating Beechcraft 99 turboprop aircraft from its base in Calgary to Lloydminster, Saskatchewan.http://www.departedflights.com, Feb. 15, 1985 Official Airline Guide (OAG), Calgary flight schedules The airline also operated service between Edmonton, Alberta and both Cold Lake, AB and Lloydminster and was formerly known as Southern Frontier Air Transport.http://www.timetableimages.com, Southern Frontier Airlines timetables