Delta reduced Medallion qualification to a single currency: Medallion Qualification Dollars. Silver at $5,000 MQDs, Gold at $10,000, Platinum at $15,000 and Diamond at $28,000. There is no segment route and no mileage route — MQDs alone.
MQDs are earned at $1 per $1 of ticket price on Delta-marketed flights operated by Delta or its partners, excluding taxes, fees and gratuities. Basic Economy earns no miles and no status credit at all.
Cards do two distinct things. Headstart grants $2,500 MQDs per card type on the Platinum, Platinum Business, Reserve and Reserve Business cards. Boost earns MQDs from spending — $1 per $20 spent on Platinum, and $1 per $10 on Reserve.
MQDs reset each calendar year, and status earned runs from the day it is reached until January 31 of the year after next. Delta also recognises Million Milers at 1,000,000 flown miles with annual complimentary Medallion status; the tier granted is not stated on the pages read.
Delta prices award tickets dynamically and publishes no award chart.