Entry rules depend on citizenship, travel document, transport mode and transit plans, and they can change.
Use the official checker
Start with the Government of Canada traveller entry requirements page rather than a travel blog or booking website.
Do not assume one document fits everyone
A passport, visa, electronic travel authorization or other document may be required depending on nationality and mode of arrival.
Check transit rules
A traveller connecting through another country may need documents for that country even when Canada is the final destination.
Customs and declarations
Review current rules for food, plants, animals, medication, currency and goods before packing.