For most Delta Air Lines flights in 2026, the standard earning rate is 5 SkyMiles per $1 spent on the base fare and carrier-imposed surcharges (excluding government taxes and fees). This rate applies to general SkyMiles members; however, your earning power increases significantly as you reach Medallion elite status tiers. Silver Medallion members earn 7 miles per dollar, Gold members earn 8, Platinum members earn 9, and Diamond Medallion members earn the maximum of 11 SkyMiles per $1. If you use a co-branded Delta SkyMiles American Express card, you can earn an additional 2 to 3 miles per dollar on Delta purchases, effectively stacking your rewards. It is worth noting that "Basic Economy" (E class) tickets typically do not earn any SkyMiles or credit toward elite status, a policy Delta has maintained to encourage travelers to book "Main Cabin" or higher. For partner-operated flights, miles are often calculated based on a percentage of the distance flown and the fare class rather than the ticket price.