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 Air Sask (La Ronge Aviation) and Athabaska Airways. The company offers not only scheduled passenger services, but fishing charters, serveying work, forest fire fighting, and medevac operations.

Transwest's equipment includes a number of bush planes and helicopters, and four Saab 340 regional turboprop airliners. The company also operates La Ronge Water Aerodrome, Stony Rapids Water Aerodrome and Southend/Hans Ulricksen Field Aerodrome. Transwest Air also has maintenance bases in Saskatoon, Prince Albert, La Ronge, and Stony Rapids.

The company was founded by Floyd Glass, who learned to fly in the late 1930s, then served as a military flying training instructor during the Second World War. Postwar, he was the first general manager of the provincial Crown corporation Saskatchewan Government Airways. He resigned from this post, flew briefly with British Columbia's Queen Charlotte Airways, then returned to Saskatchewan and in 1955 formed his own firm, Athabasca Airways, which still exists under the name "Transwest Air". Glass died in 1999. In June 2016, West Wind Aviation put forward a letter of intent to purchase Transwest Air. The company became a subsidiary of West Wind Aviation July 1, 2016.

Transwest Air offers scheduled flights to and from:

As of September 2017 Transwest Air listed 31 aircraft and had 47 aircraft registered with Transport Canada.

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