Amex plat 5x on airfare (staring Oct 6)

[teenguy]

New redemption for Business Platinum:

Select a qualifying airline. Use Membership Rewards® Pay with Points for all or part of your flight with that airline, and you can get 50% of the points back.

Or, with any airline, book a First or Business class flight and you can get 50% of the points back. No enrollment necessary.‡

https://www.americanexpress.com/us/small-business/credit-cards/benefits/detail/airline-bonus/business-platinum#detail