Since direct MQD purchases are expensive, most flyers use these "boost" methods instead:
: You can "buy" MQDs through credit card spending: delta buy mqm price
: Earn 1 MQD for every $10 spent.
: Holding an eligible American Express card (Delta SkyMiles Platinum or Reserve) grants a $2,500 MQD deposit at the start of each year. Since direct MQD purchases are expensive, most flyers