Air Canada seat choice: check the fare before paying
Basic carries an advance Standard-selection fee, while Latitude, comfort, and Flex include Standard selection. A Standard fare has a route-dependent rule: advance Standard selection is charged within Canada, to or from the United States, and on select international itineraries, while other listed itineraries allow it without charge. Do not assume the fare name alone settles the price without checking the flight. Online check-in, starting 24 hours before departure, also supports seat selection and changes. Review the options and price offered at the time you make the transaction rather than applying the advance-fee table to every check-in choice. Before confirming, verify the traveler and sector so a choice on one flight is not mistaken for seating across the whole trip.

Important unknowns
- Actual checkout price was not inspected.
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Sources and last checked
- Online advance seat selectionhttps://www.aircanada.com/ca/en/aco/home/fly/onboard/preferred-seats/online-advance-seat-selection.html
- Mobile and online check-inhttps://www.aircanada.com/ca/en/aco/home/plan/check-in-information/how-to-check-in.html