When you are a "no-show" for a flight or hotel, the consequences are usually swift and financially punitive. For airlines, if you miss the first leg of a multi-city or round-trip itinerary without notifying them, the "No-Show Policy" typically triggers an automatic cancellation of all remaining segments of your ticket. This means your return flight will be voided, and you likely won't receive a refund, as most "no-show" situations result in the total forfeiture of the fare. For hotels, a no-show usually results in a charge for the first night's stay (plus taxes) and the cancellation of the rest of the reservation to allow the room to be resold. In the world of rental cars, a no-show might lead to a fee or the loss of your guaranteed rate. In 2026, many travel providers use AI to predict no-shows and overbook accordingly; however, if you know you won't make it, it is a peer-to-peer best practice to cancel or "change" your booking at least a few hours prior, as this might preserve the value of your ticket as a future travel credit rather than losing the money entirely.