Canceling an Uber request triggers a specific set of protocols designed to balance fairness between the rider and the driver. If you cancel shortly after booking (usually within two to five minutes depending on your location), you typically won't be charged a fee. However, if you wait longer, or if the driver has already made significant progress toward your pickup point, a cancellation fee is applied to compensate the driver for their time and fuel. If the driver arrives at the pickup location and waits for a specific duration (often five minutes) without you appearing, they can cancel the ride, and you will be charged a "no-show" fee. Frequent cancellations can also impact your internal rider rating or, in extreme cases, lead to temporary account flags, as the system aims to discourage behavior that creates inefficiency for drivers. It is always best to check the specific "Cancel" button in the app before confirming, as it will often display whether a fee applies at that exact moment, providing transparency before you commit to the action.