Lethbridge Airport had become more regional in nature. According to Trans-Canada's system timetable dated April 29, 1962, the airline was operating Vickers Viscount turboprop service on a routing of Lethbridge-Calgary-Edmonton and was also flying Douglas DC-3 service with a routing of Lethbridge-Medicine Hat-Swift Current-Regina-Yorkton-Brandon-Winnipeg. Trans Canada would become Air Canada which in turn continued to operate Vickers Viscount turboprop service on the Lethbridge-Calgary-Edmonton route before ceasing all scheduled passenger service to Lethbridge during the early 1970s. Time Air was a regional airline that initiated operations in Lethbridge. Founded in 1966 as Lethbridge Air Service, Time Air flew a variety of turboprop aircraft
Turboprop Dornier 328, Saab 2000, Xian MA60, MA600 and MA700, Fokker 27 and 50. Turboprop business aircraft include the Piper Meridian, Socata TBM, Pilatus PC-12, Piaggio P.180 Avanti, Beechcraft King Air and Super King Air. In April 2017, there were 14,311 business turboprops in the worldwide fleet. Between 2012 and 2016, the ATSB observed 417 events with turboprop aircraft, 83 per year, over 1.4 million flight hours: 2.2 per 10,000 hours. Three were “high risk” involving engine malfunction and unplanned landing in single‑engine Cessna 208 Caravans, four “medium risk” and 96% “low risk”. Two occurrences resulted in minor injuries due to