Visa-exempt outside nationals is relied upon to have an Electronic Travel Authorization (eTA) to travel to or travel through Canada. Special cases incorporate U.S. natives and travellers with a substantial Canadian visa. Canadian subjects, including double nationals, and Canadian perpetual inhabitants can't make a difference for an eTA.
Note: Until September 29, 2016, voyagers who don't have an eTA can get onto their flight, the length of they have suitable travel records, for example, a substantial visa. Amid this tolerance period, fringe administrations officers can let voyagers touching base without an eTA into the nation, the length of they meet alternate necessities to enter Canada. Discover answers to your inquiries regarding the mercy time frame.