Originally Posted by
mnbp
With the DL Amex, the benefits accrue to the traveler's SkyMiles account while OP holds the card. In OP's example, OP won't have a DL Amex on the date of travel, so benefits would not be available.
Conversely, if OP were to acquire a DL Amex in Jan 2018 for example, DL Amex benefits would apply to a Feb 2018 trip - even if the trip was purchased prior to holding any DL Amex.
Cool thanks. Not having priority boarding and the checked bags is not enough of a disadvantage to keep my personal Amex Delta, so I think I'll cancel since the AF hit just now.
If the intro bonus is enticing enough, maybe I'll open up a business Amex Delta card in time for the trip then.