A "full fare" economy ticket, often denoted by the booking code "Y," is the most expensive and flexible type of economy class ticket available. Unlike discounted economy fares, which carry heavy fees for changes or are completely non-refundable, a full fare economy ticket typically allows for free date changes, standby for earlier flights, and a full refund to the original form of payment if you cancel. These tickets are most common for last-minute business travelers who need maximum flexibility. Beyond flexibility, full fare tickets often earn the highest amount of frequent flyer miles (sometimes 100% or more of the miles flown) and place you at the top of the list for complimentary upgrades to Business or First Class. While you sit in the same seat as everyone else in the cabin, you are essentially paying a premium for the freedom to change your plans without financial penalty.