Delta Air Lines does not offer a native, official feature to exchange SkyMiles directly for cash within their own platform. The Delta ecosystem is strictly designed to keep you "within the brand" by redeeming miles for flights, upgrades, car rentals, or "Delta Vacations." However, in 2026, several third-party mileage brokers and marketplaces (such as Miles Buyer or Cash for My Miles) exist that allow you to "sell" your unused SkyMiles for real money. These services typically offer a rate between 0.8 and 1.5 cents per mile, meaning 50,000 miles could fetch between $400 and $750. While this is a common practice for travelers with large, stagnant balances who want immediate liquidity, it is important to know that selling miles often violates the airline's Terms of Service (Contract of Carriage); if the airline detects the transaction, they reserve the right to freeze your account or cancel the miles. For those who want a "safe" way to get value without flying, using miles for "Pay with Miles" (for Delta cardholders) or redeeming them for gift cards are the only official alternatives, though they usually offer a much lower "cash-equivalent" value than selling to a broker.