It's not easy to make a go of it as an upstart airline in Canada. Here is a list of Canadian discount airlines, born since 2000, that no longer fly: Roots Air — A very brief experiment by Canadian clothing retailer Roots, this short-lived airline started and ended operations in 2001, after just over a month of flying. Air Canada Tango — This low-cost subsidiary of Air Canada operated from 2001 to 2004. CanJet — This low-cost air carrier was headquartered in Enfield, N.S. and based at Halifax Int