In the airline industry of 2026, a "No-Show" typically occurs when a passenger fails to board their flight and does not cancel or change their reservation before a specific deadline (often 10 to 60 minutes before takeoff). A no-show usually results in the forfeiture of the entire ticket value and the cancellation of all subsequent flights on the itinerary. "After Departure" refers to the status of a ticket once the flight has physically left the gate. If you attempt to cancel "after departure," you are almost certainly categorized as a no-show. However, some flexible "Business" or "First Class" fares allow for changes even after the flight has departed, provided you pay a significant penalty. For most travelers, the "Golden Rule" of 2026 is to cancel at least two hours before departure to retain the ticket's value as a flight credit, even if a refund isn't possible.