If you’re neglected to take full advantage of your annual airline incidentals credits and are looking to make a quick transaction to trigger them, Doctor of Credit notes a key piece of information regarding the processing of Delta gift cards: the site through which you purchase them may influence your airline reimbursement.
Specifically, according to data points uncovered from Flyertalk, eGift cards purchased through the desktop version of the website are processed by Delta and those purchased through the mobile site are processed by CashStar. You’ll want to buy gift cards in denominations of $50 or less from the desktop site to trigger your automatic airline incidentals credits. We’ve added that information to our resource page: Amex Airline Fee Reimbursements: What still works?.
H/T: Flyertalk via Doctor of Credit