Foreign nationals from visa-exempt countries arriving in Canada by air are required to obtain an Electronic Travel Authorization (eTA) prior to their trip. This is a requirement whether they want to visit the country or only to pass through in transit.
You need an eTA if you are travelling to Canada by air from a visa-exempt country.
The following are exempt from requiring an eTA:
You can apply for an eTA through the Canadian federal government website.
Before you apply, you will need:
The Canadian government advises you to apply as soon as you know your travel itinerary.
However, an eTA can be obtained at the last minute via a smartphone. All you need is an internet connection. The email authorization often only takes a few minutes to come through. However, some requests can take several days to process if supporting documents are requested.
There is no requirement to print an eTA. It is electronically linked to your passport or travel document.
An eTA is valid for five years or until your passport or travel document expires, whichever comes first.
There is no limit on the number of entries to Canada, as long as the eTA is valid.