A no-show policy is a contractual agreement that outlines the penalties if a traveler fails to appear for a booked service (like a flight or hotel stay) without canceling in advance. In 2026, airline no-show policies are particularly strict: if you miss the first leg of a trip, the airline will typically cancel all subsequent legs, including your return flight, without a refund. This is known as a "no-show clause" and is designed to prevent "hidden-city ticketing." For hotels, a no-show usually results in the guest being charged for the first night's stay (or the full amount for non-refundable bookings), and the room is released back into inventory at check-out time the following day. These policies are critical for inventory management; they allow businesses to recover some revenue from "spoiled" inventory that could have been sold to someone else. Always notify the provider as soon as you know you won't make it to potentially avoid these "no-show" penalties.