Seeing a package marked as “Delivered” when it’s nowhere in sight can be deeply frustrating. Whether it’s a birthday gift, a long-awaited online order, or an important business item, missing deliveries happen more often than you'd think. Fortunately, there are several practical steps you can take to get to the bottom of the situation—and often, resolve it quickly.In this article, we’ll guide you through common reasons this happens, what steps you should take, and how different transportation modes like trucks, vans, trains, airplanes, and ships factor into the delivery process.