[[image:Stony Rapids Air Terminal.jpg|thumb|Transwest Air Terminal at Stony Rapids Airport]] [[image:TranswestB1900D.jpg|thumb|Transwest Air Beech 1900D C-GTWG at Regina International Airport]] [[image:TranswestHelicopter.jpg|thumb|Transwest Air Bell 206B helicopter (C-GCNC) at Regina International Airport]] Transwest Air is a scheduled and charter airline primarily serving the Canadian province of Saskatchewan. Its headquarters and main base is at Prince Albert. Transwest was formed in 2000 by the merger of two existing airlines: Air Sask (La Ronge Aviation) and Athabaska Airways. Transwest's current equipment includes a number of bush planes and helicopters, plus three Saab 340 regional turboprop airliners. The company also operates La Ronge Water Aerodrome, Stony Rapids Water Aerodrome.