I am planning a fall trip to South America. I priced some non-stop business class flights I wanted from US to Santiago on LATAM via Google Flights and confirmed it was the lowest fare available. I didn't think it was a bad rate (just a hair over $3k for 12 hour flights both ways).

I thought to call about the IAP, since LATAM is a member of the program. Imagine my shock when the agent quoted me a rate almost 25% LOWER than what I found for the same itinerary. I immediately ticketed the flights.

I had all but written the IAP off after its conversion to a discount program, but it's always worth calling to inquire. It saved me $750 per person on this trip, well worth the card investment!