Various embodiments herein each include at least one of systems, devices, methods, and software for on-demand routing upon location detection. One such embodiment is in the form of a method. This embodiment includes detecting a mobile device is present at a facility and retrieving available order data associated with an account registered with the mobile device. When order data is available and retrieved, the method may then output the order data to facilitate fulfillment of one or more orders included in the retrieved data.