WestJet Encore is a Canadian regional airline headquartered in Calgary, Alberta that operates feeder flights for WestJet, owned by the same parent company WestJet Airlines, Ltd. In response to internal market studies about future growth limitations by WestJet Airlines operating only Boeing 737 aircraft, WestJet Encore was formed in 2013 to allow increased frequency of flights by using smaller aircraft, as well as to expand service to routes with less traffic. Wikipedia