Starting March 15, 2016, visa-exempt foreign nationals who fly to or transit through Canada will need an Electronic Travel Authorization (eTA). Exceptions include U.S. citizens and foreign nationals with a valid visa. Canadian citizens, including dual citizens, are not eligible to apply for an eTA and are strongly encouraged to travel with a valid Canadian passport.  

Foreign travellers wanting to Canada as a tourist or business person can find out whether they need an eTA or a visa and other information by visiting Canada Immigration.