Beginning, April 1, 2024, Delta will no longer accept cash in any U.S. airport locations. Delta will process payment for fees such as checked bags, pet in cabin, unaccompanied minors, and the purchase of plane tickets by credit or debit cards only. The payment of checked bags, unaccompanied minor fees, and purchase of plane tickets can be processed online at check-in using Delta.com or the Fly Delta App.