In 2026, using Uber Reserve (booking ahead of time) is generally not cheaper than booking on-demand; in fact, it often costs more due to an added reservation fee. The primary advantage of booking ahead is certainty and priority, rather than price savings. When you reserve a ride, Uber calculates a price that includes the current expected fare plus a premium for the driver to commit to your specific time slot. This "upfront price" locks you in, protecting you from potential surge pricing that might occur exactly when you need to leave, such as during a sudden rainstorm or a major event. For "Premium Reserve" (like Uber Black), drivers are often dispatched 15 minutes early to wait for you, which is built into the higher cost. While you might occasionally find a lower price by booking on-demand if there is no surge, the peace of mind of having a driver matched up to 90 days in advance makes the "Reserve" feature the preferred choice for airport runs or time-sensitive appointments where a "no-car-available" scenario is not an option.