Sherpa eVisa Help by Destination Canadian eTA Do I need an eTA to transit through Canada, even if I'm not leaving the airport? Andrew January 30, 2021 08:50 Yes. An eTA is required in order to fly to Canada or transit through a Canadian airport. Related articles My eTA was approved, does that mean I can travel to Canada now? Do I need an eTA to enter Canada via land/sea? What is an Electronic Travel Authorization? My travel date to Canada changed, what do I do? How many times can I enter Canada with my eTA?