Originally Posted by
canolakid
... IAP saves about $10 on the domestic flight. ....
IAP should not apply to domestic or economy cabin flights.
Discounts available on the base fare for qualifying International First, Business, and Premium Economy Class tickets at participating airlines when you book with Platinum Travel or online at American Express Travel and pay in full with your American Express Card.
Perhaps they have a separate agreement with Westjet, distinct from IAP?