No, standby lists are almost never strictly "first-come, first-served." In 2026, airlines use a complex priority hierarchy to determine who gets an empty seat. The top of the list is always reserved for "Must-Ride" crew members or passengers who were displaced by an airline-caused delay or cancellation (re-accommodation). After that, priority is given based on Elite Status (e.g., a Delta Diamond Medallion will jump ahead of a Silver member regardless of when they checked in). Other factors include the fare class purchased (full-fare Y vs. discounted economy) and whether the passenger holds a specific airline credit card. The "time of request" (when you joined the list) is typically used only as a "tie-breaker" between two passengers who have the exact same status and fare level. Always check the app to see your live position on the list.