Yes, Delta Air Lines offers a Same-Day Standby service that allows you to wait for a seat on an earlier flight on the day of your departure. In 2026, this option is typically free for all passengers to request, but a seat is not guaranteed until the gate agent clears the list shortly before boarding. If you want a confirmed seat instead of waiting, Delta offers "Same-Day Confirmed" changes for a fee (usually $75), which is waived for Diamond, Platinum, and Gold Medallion members. A key benefit of Delta’s standby policy is that you won't lose your seat on your original flight until your standby seat is officially confirmed. Standby is only available for flights departing the same day as your original ticket, and it must be for the same origin and destination. Note that Basic Economy tickets are generally ineligible for standby or same-day changes.