To sell your Delta SkyMiles, you will typically need to create an account with the marketplace and provide your SkyMiles account information. The marketplace will then assess your miles and provide you with a quote. Once you accept the quote, the marketplace will purchase your miles and send you the cash proceeds.

Officially, Delta SkyMiles cannot be directly redeemed for cash through Delta's own website; they are intended for travel rewards, upgrades, or "SkyMiles Experiences." However, in 2026, there are several "indirect" ways to liquidate them. First, you can use them to book a "Refundable" flight and then cancel it, though this usually only returns the miles to your account, not cash. Second, you can use miles to buy retail gift cards (like Amazon or Starbucks) through the Delta SkyMiles Marketplace, which effectively acts as a cash equivalent. Finally, there are third-party mileage brokers (like MilesBuyer or SellMyMiles) that will buy your miles from you in bulk, typically starting at 40,000 to 80,000 miles, and pay you via PayPal. It is a peer-to-peer "warning" that selling miles to third parties is technically against Delta's terms of service and could lead to your account being frozen, so most savvy travelers prefer using the "Pay with Miles" feature for flights to save their actual cash instead.