In 2026, the "best" site to sell airline miles is generally considered to be The Miles Broker or The Miles Market, both of which have high trust ratings for security and payout speed. These platforms act as intermediaries, matching your unused miles with business-class travelers who want to buy them at a discount. Sell My Miles and Cash For My Miles are also popular options with long-standing reputations. When choosing a site, look for one that offers verified escrow services or "payment before transfer" to ensure you aren't scammed. However, it is vital to understand that selling your miles is technically a violation of most airlines' Terms of Service. While it is not "illegal" in the criminal sense, if the airline detects the transaction, they can and will close your frequent flyer account and forfeit all your remaining miles. For this reason, many travelers prefer "gray market" sites that offer anonymity and secure handling. Always read the most recent reviews from 2026 to ensure the site’s customer service is currently responsive and their payment methods (like PayPal or direct deposit) are still functioning reliably.