Yes, Delta does charge for a checked bag on most domestic economy flights. The typical cost for the first checked bag is around $35 one way, but this can vary depending on your route and fare type. Some travelers—such as those flying internationally, booking premium cabins, or holding certain elite statuses—may get one or more checked bags included at no extra cost. If you’re unsure, the best approach is to check the baggage details in your booking or use Delta’s online baggage fee calculator so you know the exact amount before you travel.