Upvote:3
Yes
When we approve your eTA, it will be linked to the passport you used to apply. You need to present this passport when you check-in to your flight to Canada.
The airline staff will scan your passport to confirm that you have a valid eTA. If you do not have one, you wonβt be able to board your flight.
Source: https://www.canada.ca/en/immigration-refugees-citizenship/services/visit-canada/eta/facts.html